NEWS
author wenzelm
Thu Mar 21 16:16:43 2019 +0100 (2 months ago)
changeset 69942 2c48be88f847
parent 69926 110fff287217
child 69960 eff4ff8ba515
permissions -rw-r--r--
further robustification (amending 772bdd1ed843);
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Isabelle NEWS -- history of user-relevant changes
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=================================================
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(Note: Isabelle/jEdit shows a tree-view of the NEWS file in Sidekick.)
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New in this Isabelle version
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----------------------------
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*** General ***
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* Old-style {* verbatim *} tokens are explicitly marked as legacy
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feature and will be removed soon. Use \<open>cartouche\<close> syntax instead, e.g.
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via "isabelle update_cartouches -t" (available since Isabelle2015).
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* The font family "Isabelle DejaVu" is systematically derived from the
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existing "DejaVu" collection, with variants "Sans Mono", "Sans", "Serif"
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and styles "Normal", "Bold", "Italic/Oblique", "Bold-Italic/Oblique".
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The DejaVu base fonts are retricted to well-defined Unicode ranges and
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augmented by special Isabelle symbols, taken from the former
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"IsabelleText" font (which is no longer provided separately). The line
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metrics and overall rendering quality is closer to original DejaVu.
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INCOMPATIBILITY with display configuration expecting the old
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"IsabelleText" font: use e.g. "Isabelle DejaVu Sans Mono" instead.
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* The Isabelle fonts render "\<inverse>" properly as superscript "-1".
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* Old-style inner comments (* ... *) within the term language are no
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longer supported (legacy feature in Isabelle2018).
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* Infix operators that begin or end with a "*" can now be paranthesized
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without additional spaces, eg "(*)" instead of "( * )".
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* Mixfix annotations may use cartouches instead of old-style double
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quotes, e.g. (infixl \<open>+\<close> 60). The command-line tool "isabelle update -u
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mixfix_cartouches" allows to update existing theory sources
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automatically.
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* ML setup commands (e.g. 'setup', 'method_setup', 'parse_translation')
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need to provide a closed expression -- without trailing semicolon. Minor
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INCOMPATIBILITY.
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* Command keywords of kind thy_decl / thy_goal may be more specifically
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fit into the traditional document model of "definition-statement-proof"
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via thy_defn / thy_stmt / thy_goal_defn / thy_goal_stmt.
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*** Isabelle/jEdit Prover IDE ***
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* The jEdit File Browser is more prominent in the default GUI layout of
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Isabelle/jEdit: various virtual file-systems provide access to Isabelle
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resources, notably via "favorites:" (or "Edit Favorites").
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* Action "isabelle-export-browser" points the File Browser to the theory
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exports of the current buffer, based on the "isabelle-export:" virtual
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file-system. The directory view needs to be reloaded manually to follow
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ongoing document processing.
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* Action "isabelle-session-browser" points the File Browser to session
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information, based on the "isabelle-session:" virtual file-system. Its
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entries are structured according to chapter / session names, the open
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operation is redirected to the session ROOT file.
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* System option "jedit_text_overview" allows to disable the text
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overview column.
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* Fonts for the text area, gutter, GUI elements etc. use the "Isabelle
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DejaVu" collection by default, which provides uniform rendering quality
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with the usual Isabelle symbols. Line spacing no longer needs to be
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adjusted: properties for the old IsabelleText font had "Global Options /
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Text Area / Extra vertical line spacing (in pixels): -2", now it
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defaults to 0.
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* Improved sub-pixel font rendering (especially on Linux), thanks to
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OpenJDK 11.
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* Support for user-defined file-formats via class isabelle.File_Format
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in Isabelle/Scala (e.g. see isabelle.Bibtex.File_Format), configured via
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the shell function "isabelle_file_format" in etc/settings (e.g. of an
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Isabelle component).
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* Command-line options "-s" and "-u" of "isabelle jedit" override the
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default for system option "system_heaps" that determines the heap
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storage directory for "isabelle build". Option "-n" is now clearly
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separated from option "-s".
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*** Isar ***
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* More robust treatment of structural errors: begin/end blocks take
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precedence over goal/proof.
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* Implicit cases goal1, goal2, goal3, etc. have been discontinued
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(legacy feature since Isabelle2016).
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*** HOL ***
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* Formal Laurent series and overhaul of Formal power series 
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in session HOL-Computational_Algebra.
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* Exponentiation by squaring in session HOL-Library; used for computing
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powers in class monoid_mult and modular exponentiation in session
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HOL-Number_Theory.
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* More material on residue rings in session HOL-Number_Theory:
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Carmichael's function, primitive roots, more properties for "ord".
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* The functions \<Union>, \<Inter>, \<Squnion>, \<Sqinter>
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(not the corresponding binding operators) now have the same precedence
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as any other prefix function symbol.  Minor INCOMPATIBILITY.
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* Slightly more conventional naming schema in structure Inductive.
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Minor INCOMPATIBILITY.
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* Various _global variants of specification tools have been removed.
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Minor INCOMPATIBILITY, prefer combinators Named_Target.theory_map[_result]
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to lift specifications to the global theory level.
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* Code generation: command 'export_code' without file keyword exports
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code as regular theory export, which can be materialized using the
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command-line tools "isabelle export" or "isabelle build -e" (with
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'export_files' in the session ROOT), or browsed in Isabelle/jEdit via
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the "isabelle-export:" file-system. To get generated code dumped into
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output, use "file \<open>\<close>". Minor INCOMPATIBILITY.
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* Code generation for OCaml: proper strings are used for literals.
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Minor INCOMPATIBILITY.
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* Code generation for OCaml: Zarith supersedes Nums as library for
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proper integer arithmetic. The library is located via standard
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invocations of "ocamlfind" (via ISABELLE_OCAMLFIND settings variable).
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The environment provided by "isabelle ocaml_setup" already contains this
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tool and the required packages. Minor INCOMPATIBILITY.
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* Code generation for Haskell: code includes for Haskell must contain
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proper module frame, nothing is added magically any longer.
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INCOMPATIBILITY.
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* Code generation: slightly more conventional syntax for
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'code_stmts' antiquotation.  Minor INCOMPATIBILITY.
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* The simplifier uses image_cong_simp as a congruence rule. The historic
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and not really well-formed congruence rules INF_cong*, SUP_cong*,
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are not used by default any longer.  INCOMPATIBILITY; consider using
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declare image_cong_simp [cong del] in extreme situations.
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* INF_image and SUP_image are no default simp rules any longer.
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INCOMPATIBILITY, prefer image_comp as simp rule if needed.
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* Simplified syntax setup for big operators under image. In rare
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situations, type conversions are not inserted implicitly any longer
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and need to be given explicitly. Auxiliary abbreviations INFIMUM,
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SUPREMUM, UNION, INTER should now rarely occur in output and are just
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retained as migration auxiliary. INCOMPATIBILITY.
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* Theory List: the precedence of the list_update operator has changed:
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"f a [n := x]" now needs to be written "(f a)[n := x]".
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* Theory "HOL-Library.Multiset": the <Union># operator now has the same
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precedence as any other prefix function symbol.
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* Retired lemma card_Union_image; use the simpler card_UN_disjoint instead.
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* Facts sum_mset.commute and prod_mset.commute renamed to sum_mset.swap
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and prod_mset.swap, similarly to sum.swap and prod.swap.
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INCOMPATIBILITY.
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* Strong congruence rules (with =simp=> in the premises) for constant f
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are now uniformly called f_cong_simp, in accordance with congruence
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rules produced for mappers by the datatype package. INCOMPATIBILITY.
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* Sledgehammer:
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  - The URL for SystemOnTPTP, which is used by remote provers, has
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    been updated.
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  - The machine-learning-based filter MaSh has been optimized to take
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    less time (in most cases).
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* SMT: reconstruction is now possible using the SMT solver veriT.
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* HOL-Library.Simps_Case_Conv: case_of_simps now supports overlapping 
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and non-exhaustive patterns and handles arbitrarily nested patterns.
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It uses on the same algorithm as HOL-Library.Code_Lazy, which assumes
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sequential left-to-right pattern matching. The generated
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equation no longer tuples the arguments on the right-hand side.
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INCOMPATIBILITY.
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* Session HOL-SPARK: .prv files are no longer written to the
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file-system, but exported to the session database. Results may be
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retrieved with the "isabelle export" command-line tool like this:
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  isabelle export -x "*:**.prv" HOL-SPARK-Examples
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*** ML ***
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* Local_Theory.reset is no longer available in user space. Regular
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definitional packages should use balanced blocks of
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Local_Theory.open_target versus Local_Theory.close_target instead,
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or the Local_Theory.subtarget(_result) combinator. Rare INCOMPATIBILITY.
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* Original PolyML.pointerEq is retained as a convenience for tools that
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don't use Isabelle/ML (where this is called "pointer_eq").
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* ML evaluation (notably via commands 'ML' and 'ML_file') is subject to
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option ML_environment to select a named environment, such as "Isabelle"
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for Isabelle/ML, or "SML" for official Standard ML. It is also possible
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to move toplevel bindings between environments, using a notation with
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">" as separator. For example:
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  declare [[ML_environment = "Isabelle>SML"]]
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  ML \<open>val println = writeln\<close>
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  declare [[ML_environment = "SML"]]
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  ML \<open>println "test"\<close>
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  declare [[ML_environment = "Isabelle"]]
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  ML \<open>println\<close>  \<comment> \<open>not present\<close>
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The Isabelle/ML function ML_Env.setup defines new ML environments. This
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is useful to incorporate big SML projects in an isolated name space, and
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potentially with variations on ML syntax (existing ML_Env.SML_operations
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observes the official standard).
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* ML antiquotation @{master_dir} refers to the master directory of the
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underlying theory, i.e. the directory of the theory file.
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* ML antiquotation @{verbatim} inlines its argument as string literal,
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preserving newlines literally. The short form \<^verbatim>\<open>abc\<close> is particularly
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useful.
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* Command 'generate_file' allows to produce sources for other languages,
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with antiquotations in the Isabelle context (only the control-cartouche
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form). The default "cartouche" antiquotation evaluates an ML expression
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of type string and inlines the result as a string literal of the target
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language. For example, this works for Haskell as follows:
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  generate_file "Pure.hs" = \<open>
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  module Isabelle.Pure where
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    allConst, impConst, eqConst :: String
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    allConst = \<open>\<^const_name>\<open>Pure.all\<close>\<close>
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    impConst = \<open>\<^const_name>\<open>Pure.imp\<close>\<close>
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    eqConst = \<open>\<^const_name>\<open>Pure.eq\<close>\<close>
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  \<close>
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The ML function Generate_File.generate writes all generated files from a
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given theory to the file-system, e.g. a temporary directory where some
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external compiler is applied.
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*** System ***
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* The system option "system_heaps" determines where to store the session
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image of "isabelle build" (and other tools using that internally).
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Former option "-s" is superseded by option "-o system_heaps".
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INCOMPATIBILITY in command-line syntax.
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* The command-line tool "isabelle update" uses Isabelle/PIDE in
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batch-mode to update theory sources based on semantic markup produced in
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Isabelle/ML. Actual updates depend on system options that may be enabled
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via "-u OPT" (for "update_OPT"), see also $ISABELLE_HOME/etc/options
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section "Theory update". Theory sessions are specified as in "isabelle
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dump".
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* The command-line tool "isabelle update -u control_cartouches" changes
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antiquotations into control-symbol format (where possible): @{NAME}
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becomes \<^NAME> and @{NAME ARG} becomes \<^NAME>\<open>ARG\<close>.
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* Support for Isabelle command-line tools defined in Isabelle/Scala.
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Instances of class Isabelle_Scala_Tools may be configured via the shell
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function "isabelle_scala_tools" in etc/settings (e.g. of an Isabelle
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component).
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* Session directory $ISABELLE_HOME/src/Tools/Haskell provides some
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source modules for Isabelle tools implemented in Haskell, notably for
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Isabelle/PIDE.
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* Isabelle server command "use_theories" supports "nodes_status_delay"
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for continuous output of node status information. The time interval is
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specified in seconds; a negative value means it is disabled (default).
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* Isabelle Server command "use_theories" terminates more robustly in the
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presence of structurally broken sources: full consolidation of theories
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is no longer required.
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* OCaml tools and libraries are now accesed via ISABELLE_OCAMLFIND,
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which needs to point to a suitable version of "ocamlfind" (e.g. via
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OPAM, see below). INCOMPATIBILITY: settings variables ISABELLE_OCAML and
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ISABELLE_OCAMLC are no longer supported.
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* Support for managed installations of Glasgow Haskell Compiler and
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OCaml via the following command-line tools:
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  isabelle ghc_setup
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  isabelle ghc_stack
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  isabelle ocaml_setup
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  isabelle ocaml_opam
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The global installation state is determined by the following settings
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(and corresponding directory contents):
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  ISABELLE_STACK_ROOT
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  ISABELLE_STACK_RESOLVER
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  ISABELLE_GHC_VERSION
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  ISABELLE_OPAM_ROOT
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  ISABELLE_OCAML_VERSION
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After setup, the following Isabelle settings are automatically
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redirected (overriding existing user settings):
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  ISABELLE_GHC
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  ISABELLE_OCAMLFIND
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The old meaning of these settings as locally installed executables may
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be recovered by purging the directories ISABELLE_STACK_ROOT /
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ISABELLE_OPAM_ROOT, or by resetting these variables in
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$ISABELLE_HOME_USER/etc/settings.
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* Update to Java 11: the latest long-term support version of OpenJDK.
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* System option "checkpoint" has been discontinued: obsolete thanks to
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improved memory management in Poly/ML.
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* Update to Poly/ML 5.8 allows to use the native x86_64 platform without
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the full overhead of 64-bit values everywhere. This special x86_64_32
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mode provides up to 16GB ML heap, while program code and stacks are
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allocated elsewhere. Thus approx. 5 times more memory is available for
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applications compared to old x86 mode (which is no longer used by
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Isabelle). The switch to the x86_64 CPU architecture also avoids
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compatibility problems with Linux and macOS, where 32-bit applications
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are gradually phased out.
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New in Isabelle2018 (August 2018)
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---------------------------------
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*** General ***
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   342
wenzelm@68393
   343
* Session-qualified theory names are mandatory: it is no longer possible
wenzelm@68393
   344
to refer to unqualified theories from the parent session.
wenzelm@68393
   345
INCOMPATIBILITY for old developments that have not been updated to
wenzelm@68393
   346
Isabelle2017 yet (using the "isabelle imports" tool).
wenzelm@68393
   347
wenzelm@68393
   348
* Only the most fundamental theory names are global, usually the entry
wenzelm@68393
   349
points to major logic sessions: Pure, Main, Complex_Main, HOLCF, IFOL,
wenzelm@68393
   350
FOL, ZF, ZFC etc. INCOMPATIBILITY, need to use qualified names for
wenzelm@68393
   351
formerly global "HOL-Probability.Probability" and "HOL-SPARK.SPARK".
wenzelm@68393
   352
wenzelm@68558
   353
* Global facts need to be closed: no free variables and no hypotheses.
wenzelm@68558
   354
Rare INCOMPATIBILITY.
wenzelm@68540
   355
wenzelm@68661
   356
* Facts stemming from locale interpretation are subject to lazy
wenzelm@68661
   357
evaluation for improved performance. Rare INCOMPATIBILITY: errors
wenzelm@68661
   358
stemming from interpretation morphisms might be deferred and thus
wenzelm@68661
   359
difficult to locate; enable system option "strict_facts" temporarily to
wenzelm@68661
   360
avoid this.
wenzelm@68661
   361
wenzelm@67446
   362
* Marginal comments need to be written exclusively in the new-style form
wenzelm@67446
   363
"\<comment> \<open>text\<close>", old ASCII variants like "-- {* ... *}" are no longer
wenzelm@67446
   364
supported. INCOMPATIBILITY, use the command-line tool "isabelle
wenzelm@67446
   365
update_comments" to update existing theory files.
wenzelm@67446
   366
wenzelm@67507
   367
* Old-style inner comments (* ... *) within the term language are legacy
wenzelm@67507
   368
and will be discontinued soon: use formal comments "\<comment> \<open>...\<close>" or "\<^cancel>\<open>...\<close>"
wenzelm@67507
   369
instead.
wenzelm@67507
   370
nipkow@67402
   371
* The "op <infix-op>" syntax for infix operators has been replaced by
nipkow@67400
   372
"(<infix-op>)". If <infix-op> begins or ends with a "*", there needs to
nipkow@67400
   373
be a space between the "*" and the corresponding parenthesis.
wenzelm@68543
   374
INCOMPATIBILITY, use the command-line tool "isabelle update_op" to
wenzelm@68543
   375
convert theory and ML files to the new syntax. Because it is based on
wenzelm@68543
   376
regular expression matching, the result may need a bit of manual
wenzelm@68543
   377
postprocessing. Invoking "isabelle update_op" converts all files in the
wenzelm@68543
   378
current directory (recursively). In case you want to exclude conversion
wenzelm@68543
   379
of ML files (because the tool frequently also converts ML's "op"
wenzelm@68543
   380
syntax), use option "-m".
nipkow@67398
   381
wenzelm@67013
   382
* Theory header 'abbrevs' specifications need to be separated by 'and'.
wenzelm@67013
   383
INCOMPATIBILITY.
wenzelm@67013
   384
wenzelm@66757
   385
* Command 'external_file' declares the formal dependency on the given
wenzelm@66757
   386
file name, such that the Isabelle build process knows about it, but
wenzelm@66757
   387
without specific Prover IDE management.
wenzelm@66757
   388
wenzelm@66759
   389
* Session ROOT entries no longer allow specification of 'files'. Rare
wenzelm@66759
   390
INCOMPATIBILITY, use command 'external_file' within a proper theory
wenzelm@66759
   391
context.
wenzelm@66759
   392
wenzelm@66764
   393
* Session root directories may be specified multiple times: each
wenzelm@66764
   394
accessible ROOT file is processed only once. This facilitates
wenzelm@66764
   395
specification of $ISABELLE_HOME_USER/ROOTS or command-line options like
wenzelm@66764
   396
-d or -D for "isabelle build" and "isabelle jedit". Example:
wenzelm@66764
   397
wenzelm@66764
   398
  isabelle build -D '~~/src/ZF'
wenzelm@66764
   399
wenzelm@67263
   400
* The command 'display_drafts' has been discontinued. INCOMPATIBILITY,
wenzelm@67263
   401
use action "isabelle.draft" (or "print") in Isabelle/jEdit instead.
wenzelm@67263
   402
wenzelm@68393
   403
* In HTML output, the Isabelle symbol "\<hyphen>" is rendered as explicit
wenzelm@68393
   404
Unicode hyphen U+2010, to avoid unclear meaning of the old "soft hyphen"
wenzelm@68393
   405
U+00AD. Rare INCOMPATIBILITY, e.g. copy-paste of historic Isabelle HTML
wenzelm@68393
   406
output.
wenzelm@67305
   407
wenzelm@66712
   408
wenzelm@67261
   409
*** Isabelle/jEdit Prover IDE ***
wenzelm@66768
   410
wenzelm@68393
   411
* The command-line tool "isabelle jedit" provides more flexible options
wenzelm@68393
   412
for session management:
wenzelm@68393
   413
wenzelm@68472
   414
  - option -R builds an auxiliary logic image with all theories from
wenzelm@68472
   415
    other sessions that are not already present in its parent
wenzelm@68393
   416
wenzelm@68393
   417
  - option -S is like -R, with a focus on the selected session and its
wenzelm@68393
   418
    descendants (this reduces startup time for big projects like AFP)
wenzelm@68393
   419
wenzelm@68472
   420
  - option -A specifies an alternative ancestor session for options -R
wenzelm@68472
   421
    and -S
wenzelm@68472
   422
wenzelm@68541
   423
  - option -i includes additional sessions into the name-space of
wenzelm@68541
   424
    theories
wenzelm@68541
   425
wenzelm@68393
   426
  Examples:
wenzelm@68393
   427
    isabelle jedit -R HOL-Number_Theory
wenzelm@68393
   428
    isabelle jedit -R HOL-Number_Theory -A HOL
wenzelm@68393
   429
    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL
wenzelm@68393
   430
    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL-Analysis
wenzelm@68541
   431
    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL-Analysis -i CryptHOL
wenzelm@68393
   432
wenzelm@68393
   433
* PIDE markup for session ROOT files: allows to complete session names,
wenzelm@68393
   434
follow links to theories and document files etc.
wenzelm@68393
   435
wenzelm@68393
   436
* Completion supports theory header imports, using theory base name.
wenzelm@68393
   437
E.g. "Prob" may be completed to "HOL-Probability.Probability".
wenzelm@68393
   438
wenzelm@68393
   439
* Named control symbols (without special Unicode rendering) are shown as
wenzelm@68393
   440
bold-italic keyword. This is particularly useful for the short form of
wenzelm@68393
   441
antiquotations with control symbol: \<^name>\<open>argument\<close>. The action
wenzelm@68393
   442
"isabelle.antiquoted_cartouche" turns an antiquotation with 0 or 1
wenzelm@68393
   443
arguments into this format.
wenzelm@68393
   444
wenzelm@68393
   445
* Completion provides templates for named symbols with arguments,
wenzelm@68393
   446
e.g. "\<comment> \<open>ARGUMENT\<close>" or "\<^emph>\<open>ARGUMENT\<close>".
wenzelm@68393
   447
wenzelm@68368
   448
* Slightly more parallel checking, notably for high priority print
wenzelm@68368
   449
functions (e.g. State output).
wenzelm@68368
   450
wenzelm@68080
   451
* The view title is set dynamically, according to the Isabelle
wenzelm@68080
   452
distribution and the logic session name. The user can override this via
wenzelm@68080
   453
set-view-title (stored persistently in $JEDIT_SETTINGS/perspective.xml).
wenzelm@68080
   454
wenzelm@67395
   455
* System options "spell_checker_include" and "spell_checker_exclude"
wenzelm@67395
   456
supersede former "spell_checker_elements" to determine regions of text
wenzelm@67395
   457
that are subject to spell-checking. Minor INCOMPATIBILITY.
wenzelm@67395
   458
wenzelm@67248
   459
* Action "isabelle.preview" is able to present more file formats,
wenzelm@67266
   460
notably bibtex database files and ML files.
wenzelm@67246
   461
wenzelm@67262
   462
* Action "isabelle.draft" is similar to "isabelle.preview", but shows a
wenzelm@68067
   463
plain-text document draft. Both are available via the menu "Plugins /
wenzelm@68067
   464
Isabelle".
wenzelm@67262
   465
wenzelm@67304
   466
* When loading text files, the Isabelle symbols encoding UTF-8-Isabelle
wenzelm@67304
   467
is only used if there is no conflict with existing Unicode sequences in
wenzelm@67304
   468
the file. Otherwise, the fallback encoding is plain UTF-8 and Isabelle
wenzelm@67304
   469
symbols remain in literal \<symbol> form. This avoids accidental loss of
wenzelm@67304
   470
Unicode content when saving the file.
wenzelm@67304
   471
wenzelm@68545
   472
* Bibtex database files (.bib) are semantically checked.
wenzelm@68545
   473
wenzelm@67993
   474
* Update to jedit-5.5.0, the latest release.
wenzelm@67993
   475
wenzelm@67246
   476
wenzelm@67261
   477
*** Isabelle/VSCode Prover IDE ***
wenzelm@67261
   478
wenzelm@67261
   479
* HTML preview of theories and other file-formats similar to
wenzelm@67261
   480
Isabelle/jEdit.
wenzelm@67261
   481
wenzelm@68690
   482
* Command-line tool "isabelle vscode_server" accepts the same options
wenzelm@68690
   483
-A, -R, -S, -i for session selection as "isabelle jedit". This is
wenzelm@68690
   484
relevant for isabelle.args configuration settings in VSCode. The former
wenzelm@68690
   485
option -A (explore all known session files) has been discontinued: it is
wenzelm@68690
   486
enabled by default, unless option -S is used to focus on a particular
wenzelm@68690
   487
spot in the session structure. INCOMPATIBILITY.
wenzelm@68690
   488
wenzelm@66768
   489
wenzelm@67140
   490
*** Document preparation ***
wenzelm@67140
   491
wenzelm@67448
   492
* Formal comments work uniformly in outer syntax, inner syntax (term
wenzelm@67448
   493
language), Isabelle/ML and some other embedded languages of Isabelle.
wenzelm@67448
   494
See also "Document comments" in the isar-ref manual. The following forms
wenzelm@67448
   495
are supported:
wenzelm@67448
   496
wenzelm@67448
   497
  - marginal text comment: \<comment> \<open>\<dots>\<close>
wenzelm@67448
   498
  - canceled source: \<^cancel>\<open>\<dots>\<close>
wenzelm@67448
   499
  - raw LaTeX: \<^latex>\<open>\<dots>\<close>
wenzelm@67413
   500
wenzelm@67381
   501
* Outside of the inner theory body, the default presentation context is
wenzelm@67381
   502
theory Pure. Thus elementary antiquotations may be used in markup
wenzelm@67381
   503
commands (e.g. 'chapter', 'section', 'text') and formal comments.
wenzelm@67381
   504
wenzelm@68513
   505
* System option "document_tags" specifies alternative command tags. This
wenzelm@68513
   506
is occasionally useful to control the global visibility of commands via
wenzelm@68513
   507
session options (e.g. in ROOT).
wenzelm@67140
   508
wenzelm@67140
   509
* Document markup commands ('section', 'text' etc.) are implicitly
wenzelm@67140
   510
tagged as "document" and visible by default. This avoids the application
wenzelm@67140
   511
of option "document_tags" to these commands.
wenzelm@67140
   512
wenzelm@67145
   513
* Isabelle names are mangled into LaTeX macro names to allow the full
wenzelm@67145
   514
identifier syntax with underscore, prime, digits. This is relevant for
wenzelm@67145
   515
antiquotations in control symbol notation, e.g. \<^const_name> becomes
wenzelm@67145
   516
\isactrlconstUNDERSCOREname.
wenzelm@67145
   517
wenzelm@68393
   518
* Document preparation with skip_proofs option now preserves the content
wenzelm@68393
   519
more accurately: only terminal proof steps ('by' etc.) are skipped.
wenzelm@67297
   520
wenzelm@68484
   521
* Document antiquotation @{theory name} requires the long
wenzelm@68484
   522
session-qualified theory name: this is what users reading the text
wenzelm@68484
   523
normally need to import.
wenzelm@68484
   524
wenzelm@67219
   525
* Document antiquotation @{session name} checks and prints the given
wenzelm@67219
   526
session name verbatim.
wenzelm@67219
   527
wenzelm@68393
   528
* Document antiquotation @{cite} now checks the given Bibtex entries
wenzelm@68393
   529
against the Bibtex database files -- only in batch-mode session builds.
wenzelm@67157
   530
wenzelm@67176
   531
* Command-line tool "isabelle document" has been re-implemented in
wenzelm@67194
   532
Isabelle/Scala, with simplified arguments and explicit errors from the
wenzelm@67203
   533
latex and bibtex process. Minor INCOMPATIBILITY.
wenzelm@67173
   534
wenzelm@68393
   535
* Session ROOT entry: empty 'document_files' means there is no document
wenzelm@68393
   536
for this session. There is no need to specify options [document = false]
wenzelm@68393
   537
anymore.
wenzelm@68393
   538
wenzelm@67140
   539
wenzelm@67702
   540
*** Isar ***
wenzelm@67702
   541
wenzelm@67702
   542
* Command 'interpret' no longer exposes resulting theorems as literal
wenzelm@67702
   543
facts, notably for the \<open>prop\<close> notation or the "fact" proof method. This
wenzelm@67702
   544
improves modularity of proofs and scalability of locale interpretation.
wenzelm@67702
   545
Rare INCOMPATIBILITY, need to refer to explicitly named facts instead
wenzelm@67702
   546
(e.g. use 'find_theorems' or 'try' to figure this out).
wenzelm@67702
   547
wenzelm@68393
   548
* The old 'def' command has been discontinued (legacy since
wenzelm@68393
   549
Isbelle2016-1). INCOMPATIBILITY, use 'define' instead -- usually with
wenzelm@68393
   550
object-logic equality or equivalence.
wenzelm@68393
   551
wenzelm@68543
   552
wenzelm@68543
   553
*** Pure ***
wenzelm@68543
   554
wenzelm@68543
   555
* The inner syntax category "sort" now includes notation "_" for the
wenzelm@68543
   556
dummy sort: it is effectively ignored in type-inference.
wenzelm@68543
   557
ballarin@67740
   558
* Rewrites clauses (keyword 'rewrites') were moved into the locale
wenzelm@68393
   559
expression syntax, where they are part of locale instances. In
wenzelm@68393
   560
interpretation commands rewrites clauses now need to occur before 'for'
ballarin@68469
   561
and 'defines'. Rare INCOMPATIBILITY; definitions immediately subject to
ballarin@68469
   562
rewriting may need to be pulled up into the surrounding theory.
wenzelm@68393
   563
wenzelm@68393
   564
* For 'rewrites' clauses, if activating a locale instance fails, fall
wenzelm@68393
   565
back to reading the clause first. This helps avoid qualification of
ballarin@67764
   566
locale instances where the qualifier's sole purpose is avoiding
ballarin@67764
   567
duplicate constant declarations.
ballarin@67741
   568
wenzelm@68543
   569
* Proof method "simp" now supports a new modifier "flip:" followed by a
wenzelm@68543
   570
list of theorems. Each of these theorems is removed from the simpset
wenzelm@68543
   571
(without warning if it is not there) and the symmetric version of the
wenzelm@68543
   572
theorem (i.e. lhs and rhs exchanged) is added to the simpset. For "auto"
wenzelm@68543
   573
and friends the modifier is "simp flip:".
wenzelm@67718
   574
wenzelm@67718
   575
blanchet@66661
   576
*** HOL ***
blanchet@66661
   577
wenzelm@68568
   578
* Sledgehammer: bundled version of "vampire" (for non-commercial users)
wenzelm@68568
   579
helps to avoid fragility of "remote_vampire" service.
wenzelm@68568
   580
haftmann@68028
   581
* Clarified relationship of characters, strings and code generation:
haftmann@68028
   582
wenzelm@68393
   583
  - Type "char" is now a proper datatype of 8-bit values.
wenzelm@68393
   584
wenzelm@68393
   585
  - Conversions "nat_of_char" and "char_of_nat" are gone; use more
wenzelm@68393
   586
    general conversions "of_char" and "char_of" with suitable type
wenzelm@68393
   587
    constraints instead.
wenzelm@68393
   588
wenzelm@68393
   589
  - The zero character is just written "CHR 0x00", not "0" any longer.
wenzelm@68393
   590
wenzelm@68393
   591
  - Type "String.literal" (for code generation) is now isomorphic to
wenzelm@68393
   592
    lists of 7-bit (ASCII) values; concrete values can be written as
wenzelm@68393
   593
    "STR ''...''" for sequences of printable characters and "STR 0x..."
wenzelm@68393
   594
    for one single ASCII code point given as hexadecimal numeral.
wenzelm@68393
   595
wenzelm@68393
   596
  - Type "String.literal" supports concatenation "... + ..." for all
wenzelm@68393
   597
    standard target languages.
wenzelm@68393
   598
wenzelm@68393
   599
  - Theory HOL-Library.Code_Char is gone; study the explanations
wenzelm@68393
   600
    concerning "String.literal" in the tutorial on code generation to
wenzelm@68393
   601
    get an idea how target-language string literals can be converted to
wenzelm@68393
   602
    HOL string values and vice versa.
wenzelm@68393
   603
wenzelm@68393
   604
  - Session Imperative-HOL: operation "raise" directly takes a value of
wenzelm@68393
   605
    type "String.literal" as argument, not type "string".
wenzelm@68393
   606
wenzelm@68393
   607
INCOMPATIBILITY.
wenzelm@68393
   608
wenzelm@68393
   609
* Code generation: Code generation takes an explicit option
wenzelm@68393
   610
"case_insensitive" to accomodate case-insensitive file systems.
wenzelm@68393
   611
wenzelm@68393
   612
* Abstract bit operations as part of Main: push_bit, take_bit, drop_bit.
wenzelm@68393
   613
wenzelm@68393
   614
* New, more general, axiomatization of complete_distrib_lattice. The
wenzelm@68393
   615
former axioms:
wenzelm@68393
   616
wenzelm@68393
   617
  "sup x (Inf X) = Inf (sup x ` X)" and "inf x (Sup X) = Sup (inf x ` X)"
wenzelm@68393
   618
wenzelm@68393
   619
are replaced by:
wenzelm@68393
   620
wenzelm@68393
   621
  "Inf (Sup ` A) <= Sup (Inf ` {f ` A | f . (! Y \<in> A . f Y \<in> Y)})"
wenzelm@68393
   622
wenzelm@68393
   623
The instantiations of sets and functions as complete_distrib_lattice are
wenzelm@68393
   624
moved to Hilbert_Choice.thy because their proofs need the Hilbert choice
wenzelm@68393
   625
operator. The dual of this property is also proved in theory
wenzelm@68393
   626
HOL.Hilbert_Choice.
eberlm@67831
   627
lp15@67999
   628
* New syntax for the minimum/maximum of a function over a finite set:
wenzelm@68393
   629
MIN x\<in>A. B and even MIN x. B (only useful for finite types), also MAX.
lp15@67999
   630
haftmann@67525
   631
* Clarifed theorem names:
haftmann@67525
   632
haftmann@67525
   633
  Min.antimono ~> Min.subset_imp
haftmann@67525
   634
  Max.antimono ~> Max.subset_imp
haftmann@67525
   635
haftmann@67525
   636
Minor INCOMPATIBILITY.
haftmann@67525
   637
blanchet@66661
   638
* SMT module:
wenzelm@68393
   639
blanchet@66661
   640
  - The 'smt_oracle' option is now necessary when using the 'smt' method
blanchet@66662
   641
    with a solver other than Z3. INCOMPATIBILITY.
wenzelm@68393
   642
wenzelm@66844
   643
  - The encoding to first-order logic is now more complete in the
wenzelm@66844
   644
    presence of higher-order quantifiers. An 'smt_explicit_application'
wenzelm@66844
   645
    option has been added to control this. INCOMPATIBILITY.
wenzelm@66844
   646
haftmann@66804
   647
* Facts sum.commute(_restrict) and prod.commute(_restrict) renamed to
wenzelm@66844
   648
sum.swap(_restrict) and prod.swap(_restrict), to avoid name clashes on
wenzelm@66844
   649
interpretation of abstract locales. INCOMPATIBILITY.
haftmann@66804
   650
wenzelm@68393
   651
* Predicate coprime is now a real definition, not a mere abbreviation.
wenzelm@68393
   652
INCOMPATIBILITY.
wenzelm@68393
   653
haftmann@66803
   654
* Predicate pairwise_coprime abolished, use "pairwise coprime" instead.
haftmann@66803
   655
INCOMPATIBILITY.
haftmann@66803
   656
lp15@68373
   657
* The relator rel_filter on filters has been strengthened to its
wenzelm@68393
   658
canonical categorical definition with better properties.
wenzelm@68393
   659
INCOMPATIBILITY.
Andreas@67616
   660
immler@68072
   661
* Generalized linear algebra involving linear, span, dependent, dim
immler@68072
   662
from type class real_vector to locales module and vector_space.
immler@68072
   663
Renamed:
wenzelm@68393
   664
wenzelm@68393
   665
  span_inc ~> span_superset
wenzelm@68393
   666
  span_superset ~> span_base
wenzelm@68393
   667
  span_eq ~> span_eq_iff
wenzelm@68393
   668
wenzelm@68393
   669
INCOMPATIBILITY.
wenzelm@66844
   670
haftmann@66937
   671
* Class linordered_semiring_1 covers zero_less_one also, ruling out
haftmann@66937
   672
pathologic instances. Minor INCOMPATIBILITY.
haftmann@66937
   673
wenzelm@68393
   674
* Theory HOL.List: functions "sorted_wrt" and "sorted" now compare every
wenzelm@68393
   675
element in a list to all following elements, not just the next one.
wenzelm@68393
   676
wenzelm@68393
   677
* Theory HOL.List syntax:
wenzelm@68393
   678
wenzelm@68393
   679
  - filter-syntax "[x <- xs. P]" is no longer output syntax, but only
wenzelm@68393
   680
    input syntax
wenzelm@68393
   681
wenzelm@68393
   682
  - list comprehension syntax now supports tuple patterns in "pat <- xs"
nipkow@68249
   683
nipkow@68450
   684
* Theory Map: "empty" must now be qualified as "Map.empty".
nipkow@68450
   685
haftmann@67051
   686
* Removed nat-int transfer machinery. Rare INCOMPATIBILITY.
haftmann@67051
   687
haftmann@68100
   688
* Fact mod_mult_self4 (on nat) renamed to Suc_mod_mult_self3, to avoid
haftmann@68100
   689
clash with fact mod_mult_self4 (on more generic semirings).
haftmann@68100
   690
INCOMPATIBILITY.
haftmann@68100
   691
haftmann@68100
   692
* Eliminated some theorem aliasses:
haftmann@68100
   693
  even_times_iff ~> even_mult_iff
haftmann@68100
   694
  mod_2_not_eq_zero_eq_one_nat ~> not_mod_2_eq_0_eq_1
haftmann@68100
   695
  even_of_nat ~> even_int_iff
haftmann@68100
   696
haftmann@68100
   697
INCOMPATIBILITY.
haftmann@68100
   698
haftmann@68157
   699
* Eliminated some theorem duplicate variations:
wenzelm@68393
   700
wenzelm@68393
   701
  - dvd_eq_mod_eq_0_numeral can be replaced by dvd_eq_mod_eq_0
wenzelm@68393
   702
  - mod_Suc_eq_Suc_mod can be replaced by mod_Suc
wenzelm@68393
   703
  - mod_Suc_eq_Suc_mod [symmetrict] can be replaced by mod_simps
wenzelm@68393
   704
  - mod_eq_0_iff can be replaced by mod_eq_0_iff_dvd and dvd_def
wenzelm@68393
   705
  - the witness of mod_eqD can be given directly as "_ div _"
haftmann@68157
   706
haftmann@68157
   707
INCOMPATIBILITY.
haftmann@68157
   708
haftmann@68260
   709
* Classical setup: Assumption "m mod d = 0" (for m d :: nat) is no
wenzelm@68393
   710
longer aggresively destroyed to "\<exists>q. m = d * q". INCOMPATIBILITY, adding
wenzelm@68393
   711
"elim!: dvd" to classical proof methods in most situations restores
wenzelm@68393
   712
broken proofs.
wenzelm@68393
   713
wenzelm@68393
   714
* Theory HOL-Library.Conditional_Parametricity provides command
wenzelm@68393
   715
'parametric_constant' for proving parametricity of non-recursive
wenzelm@68393
   716
definitions. For constants that are not fully parametric the command
wenzelm@68393
   717
will infer conditions on relations (e.g., bi_unique, bi_total, or type
wenzelm@68393
   718
class conditions such as "respects 0") sufficient for parametricity. See
wenzelm@68393
   719
theory HOL-ex.Conditional_Parametricity_Examples for some examples.
wenzelm@68393
   720
wenzelm@68393
   721
* Theory HOL-Library.Code_Lazy provides a new preprocessor for the code
wenzelm@68393
   722
generator to generate code for algebraic types with lazy evaluation
Andreas@68639
   723
semantics even in call-by-value target languages. See the theories
wenzelm@68647
   724
HOL-ex.Code_Lazy_Demo and HOL-Codegenerator_Test.Code_Lazy_Test for some
wenzelm@68647
   725
examples.
wenzelm@68393
   726
wenzelm@68393
   727
* Theory HOL-Library.Landau_Symbols has been moved here from AFP.
wenzelm@68393
   728
wenzelm@68393
   729
* Theory HOL-Library.Old_Datatype no longer provides the legacy command
wenzelm@68393
   730
'old_datatype'. INCOMPATIBILITY.
wenzelm@68393
   731
wenzelm@68393
   732
* Theory HOL-Computational_Algebra.Polynomial_Factorial does not provide
wenzelm@68393
   733
instances of rat, real, complex as factorial rings etc. Import
wenzelm@68393
   734
HOL-Computational_Algebra.Field_as_Ring explicitly in case of need.
wenzelm@68393
   735
INCOMPATIBILITY.
wenzelm@68393
   736
wenzelm@68393
   737
* Session HOL-Algebra: renamed (^) to [^] to avoid conflict with new
wenzelm@68393
   738
infix/prefix notation.
wenzelm@68393
   739
wenzelm@68543
   740
* Session HOL-Algebra: revamped with much new material. The set of
wenzelm@68543
   741
isomorphisms between two groups is now denoted iso rather than iso_set.
wenzelm@68543
   742
INCOMPATIBILITY.
wenzelm@68543
   743
wenzelm@68543
   744
* Session HOL-Analysis: the Arg function now respects the same interval
wenzelm@68543
   745
as Ln, namely (-pi,pi]; the old Arg function has been renamed Arg2pi.
lp15@68499
   746
INCOMPATIBILITY.
lp15@68499
   747
wenzelm@68548
   748
* Session HOL-Analysis: the functions zorder, zer_poly, porder and
wenzelm@68548
   749
pol_poly have been redefined. All related lemmas have been reworked.
wl302@68531
   750
INCOMPATIBILITY.
wl302@68531
   751
wenzelm@68393
   752
* Session HOL-Analysis: infinite products, Moebius functions, the
wenzelm@68393
   753
Riemann mapping theorem, the Vitali covering theorem,
wenzelm@68393
   754
change-of-variables results for integration and measures.
haftmann@68260
   755
wenzelm@68647
   756
* Session HOL-Real_Asymp: proof method "real_asymp" proves asymptotics
wenzelm@68647
   757
or real-valued functions (limits, "Big-O", etc.) automatically.
wenzelm@68681
   758
See also ~~/src/HOL/Real_Asymp/Manual for some documentation.
wenzelm@68647
   759
wenzelm@68545
   760
* Session HOL-Types_To_Sets: more tool support (unoverload_type combines
wenzelm@68545
   761
internalize_sorts and unoverload) and larger experimental application
wenzelm@68545
   762
(type based linear algebra transferred to linear algebra on subspaces).
immler@68522
   763
wenzelm@66651
   764
wenzelm@68116
   765
*** ML ***
wenzelm@68116
   766
wenzelm@68116
   767
* Operation Export.export emits theory exports (arbitrary blobs), which
wenzelm@69811
   768
are stored persistently in the session build database. Command-line
wenzelm@69811
   769
tools "isabelle export" and "isabelle build -e" allow to materialize
wenzelm@69811
   770
exports in the physical file-system.
wenzelm@68116
   771
wenzelm@68276
   772
* Command 'ML_export' exports ML toplevel bindings to the global
wenzelm@68276
   773
bootstrap environment of the ML process. This allows ML evaluation
wenzelm@68276
   774
without a formal theory context, e.g. in command-line tools like
wenzelm@68276
   775
"isabelle process".
wenzelm@68276
   776
wenzelm@68116
   777
wenzelm@66729
   778
*** System ***
wenzelm@66729
   779
wenzelm@67088
   780
* Mac OS X 10.10 Yosemite is now the baseline version; Mavericks is no
wenzelm@67088
   781
longer supported.
wenzelm@67088
   782
wenzelm@68393
   783
* Linux and Windows/Cygwin is for x86_64 only, old 32bit platform
wenzelm@68393
   784
support has been discontinued.
wenzelm@68393
   785
wenzelm@66906
   786
* Java runtime is for x86_64 only. Corresponding Isabelle settings have
wenzelm@66906
   787
been renamed to ISABELLE_TOOL_JAVA_OPTIONS and JEDIT_JAVA_OPTIONS,
wenzelm@66906
   788
instead of former 32/64 variants. INCOMPATIBILITY.
wenzelm@66906
   789
wenzelm@68003
   790
* Old settings ISABELLE_PLATFORM and ISABELLE_WINDOWS_PLATFORM should be
wenzelm@68003
   791
phased out due to unclear preference of 32bit vs. 64bit architecture.
wenzelm@68003
   792
Explicit GNU bash expressions are now preferred, for example (with
wenzelm@68003
   793
quotes):
wenzelm@68003
   794
wenzelm@68003
   795
  #Posix executables (Unix or Cygwin), with preference for 64bit
wenzelm@68003
   796
  "${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}"
wenzelm@68003
   797
wenzelm@68003
   798
  #native Windows or Unix executables, with preference for 64bit
wenzelm@68003
   799
  "${ISABELLE_WINDOWS_PLATFORM64:-${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}}"
wenzelm@68003
   800
wenzelm@68003
   801
  #native Windows (32bit) or Unix executables (preference for 64bit)
wenzelm@68003
   802
  "${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}"
wenzelm@68003
   803
wenzelm@66745
   804
* Command-line tool "isabelle build" supports new options:
wenzelm@66745
   805
  - option -B NAME: include session NAME and all descendants
wenzelm@66745
   806
  - option -S: only observe changes of sources, not heap images
wenzelm@66841
   807
  - option -f: forces a fresh build
wenzelm@66737
   808
wenzelm@68734
   809
* Command-line tool "isabelle build" options -c -x -B refer to
wenzelm@68734
   810
descendants wrt. the session parent or import graph. Subtle
wenzelm@68734
   811
INCOMPATIBILITY: options -c -x used to refer to the session parent graph
wenzelm@68734
   812
only.
wenzelm@68734
   813
wenzelm@66843
   814
* Command-line tool "isabelle build" takes "condition" options with the
wenzelm@66843
   815
corresponding environment values into account, when determining the
wenzelm@66843
   816
up-to-date status of a session.
wenzelm@66843
   817
wenzelm@68393
   818
* The command-line tool "dump" dumps information from the cumulative
wenzelm@68393
   819
PIDE session database: many sessions may be loaded into a given logic
wenzelm@68393
   820
image, results from all loaded theories are written to the output
wenzelm@68393
   821
directory.
wenzelm@68393
   822
wenzelm@66851
   823
* Command-line tool "isabelle imports -I" also reports actual session
wenzelm@66851
   824
imports. This helps to minimize the session dependency graph.
wenzelm@66851
   825
wenzelm@69811
   826
* The command-line tool "export" and "isabelle build -e" (with
wenzelm@69811
   827
'export_files' in session ROOT entries) retrieve theory exports from the
wenzelm@69811
   828
session build database.
wenzelm@68393
   829
wenzelm@68393
   830
* The command-line tools "isabelle server" and "isabelle client" provide
wenzelm@68393
   831
access to the Isabelle Server: it supports responsive session management
wenzelm@68393
   832
and concurrent use of theories, based on Isabelle/PIDE infrastructure.
wenzelm@68393
   833
See also the "system" manual.
wenzelm@68393
   834
wenzelm@68393
   835
* The command-line tool "isabelle update_comments" normalizes formal
wenzelm@68393
   836
comments in outer syntax as follows: \<comment> \<open>text\<close> (whith a single space to
wenzelm@68393
   837
approximate the appearance in document output). This is more specific
wenzelm@68393
   838
than former "isabelle update_cartouches -c": the latter tool option has
wenzelm@68393
   839
been discontinued.
wenzelm@68393
   840
wenzelm@68393
   841
* The command-line tool "isabelle mkroot" now always produces a document
wenzelm@68393
   842
outline: its options have been adapted accordingly. INCOMPATIBILITY.
wenzelm@68393
   843
wenzelm@68393
   844
* The command-line tool "isabelle mkroot -I" initializes a Mercurial
wenzelm@68393
   845
repository for the generated session files.
wenzelm@68393
   846
wenzelm@68523
   847
* Settings ISABELLE_HEAPS + ISABELLE_BROWSER_INFO (or
wenzelm@68523
   848
ISABELLE_HEAPS_SYSTEM + ISABELLE_BROWSER_INFO_SYSTEM in "system build
wenzelm@68523
   849
mode") determine the directory locations of the main build artefacts --
wenzelm@68523
   850
instead of hard-wired directories in ISABELLE_HOME_USER (or
wenzelm@68523
   851
ISABELLE_HOME).
wenzelm@68523
   852
wenzelm@68393
   853
* Settings ISABELLE_PATH and ISABELLE_OUTPUT have been discontinued:
wenzelm@68393
   854
heap images and session databases are always stored in
wenzelm@68523
   855
$ISABELLE_HEAPS/$ML_IDENTIFIER (command-line default) or
wenzelm@68523
   856
$ISABELLE_HEAPS_SYSTEM/$ML_IDENTIFIER (main Isabelle application or
wenzelm@68393
   857
"isabelle jedit -s" or "isabelle build -s").
wenzelm@67099
   858
wenzelm@67199
   859
* ISABELLE_LATEX and ISABELLE_PDFLATEX now include platform-specific
wenzelm@67199
   860
options for improved error reporting. Potential INCOMPATIBILITY with
wenzelm@67199
   861
unusual LaTeX installations, may have to adapt these settings.
wenzelm@67199
   862
wenzelm@68393
   863
* Update to Poly/ML 5.7.1 with slightly improved performance and PIDE
wenzelm@68393
   864
markup for identifier bindings. It now uses The GNU Multiple Precision
wenzelm@67591
   865
Arithmetic Library (libgmp) on all platforms, notably Mac OS X with
wenzelm@67591
   866
32/64 bit.
wenzelm@67591
   867
wenzelm@67099
   868
wenzelm@66729
   869
wenzelm@66472
   870
New in Isabelle2017 (October 2017)
wenzelm@66472
   871
----------------------------------
wenzelm@64439
   872
wenzelm@64986
   873
*** General ***
wenzelm@64986
   874
wenzelm@66238
   875
* Experimental support for Visual Studio Code (VSCode) as alternative
wenzelm@66238
   876
Isabelle/PIDE front-end, see also
wenzelm@66599
   877
https://marketplace.visualstudio.com/items?itemName=makarius.Isabelle2017
wenzelm@66238
   878
wenzelm@66238
   879
VSCode is a new type of application that continues the concepts of
wenzelm@66238
   880
"programmer's editor" and "integrated development environment" towards
wenzelm@66238
   881
fully semantic editing and debugging -- in a relatively light-weight
wenzelm@66238
   882
manner. Thus it fits nicely on top of the Isabelle/PIDE infrastructure.
wenzelm@66238
   883
Technically, VSCode is based on the Electron application framework
wenzelm@66238
   884
(Node.js + Chromium browser + V8), which is implemented in JavaScript
wenzelm@66238
   885
and TypeScript, while Isabelle/VSCode mainly consists of Isabelle/Scala
wenzelm@66238
   886
modules around a Language Server implementation.
wenzelm@66238
   887
wenzelm@65504
   888
* Theory names are qualified by the session name that they belong to.
wenzelm@66454
   889
This affects imports, but not the theory name space prefix (which is
wenzelm@66454
   890
just the theory base name as before).
wenzelm@66454
   891
wenzelm@66454
   892
In order to import theories from other sessions, the ROOT file format
wenzelm@66454
   893
provides a new 'sessions' keyword. In contrast, a theory that is
wenzelm@66454
   894
imported in the old-fashioned manner via an explicit file-system path
wenzelm@66472
   895
belongs to the current session, and might cause theory name conflicts
wenzelm@66454
   896
later on. Theories that are imported from other sessions are excluded
wenzelm@66454
   897
from the current session document. The command-line tool "isabelle
wenzelm@66454
   898
imports" helps to update theory imports.
wenzelm@66454
   899
wenzelm@65451
   900
* The main theory entry points for some non-HOL sessions have changed,
wenzelm@65451
   901
to avoid confusion with the global name "Main" of the session HOL. This
wenzelm@65451
   902
leads to the follow renamings:
wenzelm@65451
   903
wenzelm@65451
   904
  CTT/Main.thy    ~>  CTT/CTT.thy
wenzelm@65451
   905
  ZF/Main.thy     ~>  ZF/ZF.thy
wenzelm@65451
   906
  ZF/Main_ZF.thy  ~>  ZF/ZF.thy
wenzelm@65451
   907
  ZF/Main_ZFC.thy ~>  ZF/ZFC.thy
wenzelm@65451
   908
  ZF/ZF.thy       ~>  ZF/ZF_Base.thy
wenzelm@65451
   909
wenzelm@65451
   910
INCOMPATIBILITY.
wenzelm@65451
   911
wenzelm@66472
   912
* Commands 'alias' and 'type_alias' introduce aliases for constants and
wenzelm@66472
   913
type constructors, respectively. This allows adhoc changes to name-space
wenzelm@66472
   914
accesses within global or local theory contexts, e.g. within a 'bundle'.
wenzelm@66472
   915
wenzelm@64986
   916
* Document antiquotations @{prf} and @{full_prf} output proof terms
wenzelm@64986
   917
(again) in the same way as commands 'prf' and 'full_prf'.
wenzelm@64986
   918
wenzelm@65055
   919
* Computations generated by the code generator can be embedded directly
wenzelm@65055
   920
into ML, alongside with @{code} antiquotations, using the following
wenzelm@65055
   921
antiquotations:
wenzelm@65055
   922
wenzelm@65055
   923
  @{computation ... terms: ... datatypes: ...} :
wenzelm@65055
   924
    ((term -> term) -> 'ml option -> 'a) -> Proof.context -> term -> 'a
wenzelm@65055
   925
  @{computation_conv ... terms: ... datatypes: ...} :
wenzelm@65055
   926
    (Proof.context -> 'ml -> conv) -> Proof.context -> conv
wenzelm@65045
   927
  @{computation_check terms: ... datatypes: ...} : Proof.context -> conv
haftmann@65041
   928
wenzelm@65055
   929
See src/HOL/ex/Computations.thy,
wenzelm@65055
   930
src/HOL/Decision_Procs/Commutative_Ring.thy and
wenzelm@65055
   931
src/HOL/Decision_Procs/Reflective_Field.thy for examples and the
wenzelm@65055
   932
tutorial on code generation.
haftmann@65041
   933
wenzelm@64986
   934
wenzelm@64602
   935
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@64602
   936
wenzelm@66472
   937
* Session-qualified theory imports allow the Prover IDE to process
wenzelm@66472
   938
arbitrary theory hierarchies independently of the underlying logic
wenzelm@66472
   939
session image (e.g. option "isabelle jedit -l"), but the directory
wenzelm@66472
   940
structure needs to be known in advance (e.g. option "isabelle jedit -d"
wenzelm@66472
   941
or a line in the file $ISABELLE_HOME_USER/ROOTS).
wenzelm@64602
   942
wenzelm@64842
   943
* The PIDE document model maintains file content independently of the
wenzelm@64842
   944
status of jEdit editor buffers. Reloading jEdit buffers no longer causes
wenzelm@64842
   945
changes of formal document content. Theory dependencies are always
wenzelm@64842
   946
resolved internally, without the need for corresponding editor buffers.
wenzelm@64842
   947
The system option "jedit_auto_load" has been discontinued: it is
wenzelm@64842
   948
effectively always enabled.
wenzelm@64842
   949
wenzelm@64867
   950
* The Theories dockable provides a "Purge" button, in order to restrict
wenzelm@64867
   951
the document model to theories that are required for open editor
wenzelm@64867
   952
buffers.
wenzelm@64867
   953
wenzelm@66424
   954
* The Theories dockable indicates the overall status of checking of each
wenzelm@66424
   955
entry. When all forked tasks of a theory are finished, the border is
wenzelm@66424
   956
painted with thick lines; remaining errors in this situation are
wenzelm@66424
   957
represented by a different border color.
wenzelm@66424
   958
wenzelm@66472
   959
* Automatic indentation is more careful to avoid redundant spaces in
wenzelm@66472
   960
intermediate situations. Keywords are indented after input (via typed
wenzelm@66472
   961
characters or completion); see also option "jedit_indent_input".
wenzelm@66472
   962
wenzelm@66472
   963
* Action "isabelle.preview" opens an HTML preview of the current theory
wenzelm@66472
   964
document in the default web browser.
wenzelm@66472
   965
wenzelm@66574
   966
* Command-line invocation "isabelle jedit -R -l LOGIC" opens the ROOT
wenzelm@66574
   967
entry of the specified logic session in the editor, while its parent is
wenzelm@66574
   968
used for formal checking.
wenzelm@66472
   969
wenzelm@66462
   970
* The main Isabelle/jEdit plugin may be restarted manually (using the
wenzelm@66462
   971
jEdit Plugin Manager), as long as the "Isabelle Base" plugin remains
wenzelm@66462
   972
enabled at all times.
wenzelm@66462
   973
wenzelm@66472
   974
* Update to current jedit-5.4.0.
wenzelm@65329
   975
wenzelm@64602
   976
haftmann@66149
   977
*** Pure ***
haftmann@66149
   978
haftmann@66149
   979
* Deleting the last code equations for a particular function using
haftmann@66149
   980
[code del] results in function with no equations (runtime abort) rather
wenzelm@66472
   981
than an unimplemented function (generation time abort). Use explicit
haftmann@66665
   982
[[code drop:]] to enforce the latter. Minor INCOMPATIBILITY.
haftmann@66149
   983
haftmann@66310
   984
* Proper concept of code declarations in code.ML:
wenzelm@66472
   985
  - Regular code declarations act only on the global theory level, being
wenzelm@66472
   986
    ignored with warnings if syntactically malformed.
wenzelm@66472
   987
  - Explicitly global code declarations yield errors if syntactically
wenzelm@66472
   988
    malformed.
wenzelm@66472
   989
  - Default code declarations are silently ignored if syntactically
wenzelm@66472
   990
    malformed.
haftmann@66310
   991
Minor INCOMPATIBILITY.
haftmann@66310
   992
wenzelm@66472
   993
* Clarified and standardized internal data bookkeeping of code
wenzelm@66472
   994
declarations: history of serials allows to track potentially
wenzelm@66472
   995
non-monotonous declarations appropriately. Minor INCOMPATIBILITY.
haftmann@66310
   996
haftmann@66149
   997
haftmann@64593
   998
*** HOL ***
haftmann@64593
   999
blanchet@66614
  1000
* The Nunchaku model finder is now part of "Main".
blanchet@66614
  1001
wenzelm@66472
  1002
* SMT module:
wenzelm@66472
  1003
  - A new option, 'smt_nat_as_int', has been added to translate 'nat' to
wenzelm@66472
  1004
    'int' and benefit from the SMT solver's theory reasoning. It is
wenzelm@66472
  1005
    disabled by default.
wenzelm@66472
  1006
  - The legacy module "src/HOL/Library/Old_SMT.thy" has been removed.
wenzelm@66472
  1007
  - Several small issues have been rectified in the 'smt' command.
wenzelm@66472
  1008
wenzelm@66472
  1009
* (Co)datatype package: The 'size_gen_o_map' lemma is no longer
wenzelm@66472
  1010
generated for datatypes with type class annotations. As a result, the
wenzelm@66472
  1011
tactic that derives it no longer fails on nested datatypes. Slight
wenzelm@66472
  1012
INCOMPATIBILITY.
eberlm@66450
  1013
haftmann@66345
  1014
* Command and antiquotation "value" with modified default strategy:
haftmann@66345
  1015
terms without free variables are always evaluated using plain evaluation
wenzelm@66472
  1016
only, with no fallback on normalization by evaluation. Minor
wenzelm@66472
  1017
INCOMPATIBILITY.
eberlm@65956
  1018
wenzelm@65552
  1019
* Theories "GCD" and "Binomial" are already included in "Main" (instead
wenzelm@65575
  1020
of "Complex_Main").
wenzelm@65552
  1021
haftmann@65170
  1022
* Constant "surj" is a full input/output abbreviation (again).
haftmann@65170
  1023
Minor INCOMPATIBILITY.
haftmann@65170
  1024
haftmann@64632
  1025
* Dropped aliasses RangeP, DomainP for Rangep, Domainp respectively.
haftmann@64632
  1026
INCOMPATIBILITY.
haftmann@64632
  1027
wenzelm@66472
  1028
* Renamed ii to imaginary_unit in order to free up ii as a variable
wenzelm@66472
  1029
name. The syntax \<i> remains available. INCOMPATIBILITY.
wenzelm@66472
  1030
wenzelm@66472
  1031
* Dropped abbreviations transP, antisymP, single_valuedP; use constants
wenzelm@66472
  1032
transp, antisymp, single_valuedp instead. INCOMPATIBILITY.
wenzelm@66472
  1033
wenzelm@66472
  1034
* Constant "subseq" in Topological_Spaces has been removed -- it is
wenzelm@66472
  1035
subsumed by "strict_mono". Some basic lemmas specific to "subseq" have
wenzelm@66472
  1036
been renamed accordingly, e.g. "subseq_o" -> "strict_mono_o" etc.
wenzelm@66472
  1037
wenzelm@66472
  1038
* Theory List: "sublist" renamed to "nths" in analogy with "nth", and
wenzelm@66472
  1039
"sublisteq" renamed to "subseq". Minor INCOMPATIBILITY.
wenzelm@66472
  1040
wenzelm@66472
  1041
* Theory List: new generic function "sorted_wrt".
wenzelm@66472
  1042
wenzelm@66472
  1043
* Named theorems mod_simps covers various congruence rules concerning
wenzelm@66472
  1044
mod, replacing former zmod_simps. INCOMPATIBILITY.
haftmann@64787
  1045
haftmann@64593
  1046
* Swapped orientation of congruence rules mod_add_left_eq,
haftmann@64593
  1047
mod_add_right_eq, mod_add_eq, mod_mult_left_eq, mod_mult_right_eq,
haftmann@64593
  1048
mod_mult_eq, mod_minus_eq, mod_diff_left_eq, mod_diff_right_eq,
wenzelm@66472
  1049
mod_diff_eq. INCOMPATIBILITY.
haftmann@64593
  1050
haftmann@64593
  1051
* Generalized some facts:
blanchet@64876
  1052
    measure_induct_rule
blanchet@64876
  1053
    measure_induct
haftmann@64593
  1054
    zminus_zmod ~> mod_minus_eq
haftmann@64593
  1055
    zdiff_zmod_left ~> mod_diff_left_eq
haftmann@64593
  1056
    zdiff_zmod_right ~> mod_diff_right_eq
haftmann@64593
  1057
    zmod_eq_dvd_iff ~> mod_eq_dvd_iff
haftmann@64593
  1058
INCOMPATIBILITY.
haftmann@64593
  1059
wenzelm@66472
  1060
* Algebraic type class hierarchy of euclidean (semi)rings in HOL:
wenzelm@66472
  1061
euclidean_(semi)ring, euclidean_(semi)ring_cancel,
wenzelm@66472
  1062
unique_euclidean_(semi)ring; instantiation requires provision of a
wenzelm@66472
  1063
euclidean size.
wenzelm@66472
  1064
wenzelm@66472
  1065
* Theory "HOL-Number_Theory.Euclidean_Algorithm" has been reworked:
wenzelm@66472
  1066
  - Euclidean induction is available as rule eucl_induct.
wenzelm@66472
  1067
  - Constants Euclidean_Algorithm.gcd, Euclidean_Algorithm.lcm,
wenzelm@66472
  1068
    Euclidean_Algorithm.Gcd and Euclidean_Algorithm.Lcm allow
wenzelm@66472
  1069
    easy instantiation of euclidean (semi)rings as GCD (semi)rings.
wenzelm@66472
  1070
  - Coefficients obtained by extended euclidean algorithm are
wenzelm@66472
  1071
    available as "bezout_coefficients".
wenzelm@66472
  1072
INCOMPATIBILITY.
wenzelm@66472
  1073
wenzelm@66472
  1074
* Theory "Number_Theory.Totient" introduces basic notions about Euler's
wenzelm@66472
  1075
totient function previously hidden as solitary example in theory
wenzelm@66472
  1076
Residues. Definition changed so that "totient 1 = 1" in agreement with
wenzelm@66472
  1077
the literature. Minor INCOMPATIBILITY.
wenzelm@66472
  1078
wenzelm@66542
  1079
* New styles in theory "HOL-Library.LaTeXsugar":
nipkow@66541
  1080
  - "dummy_pats" for printing equations with "_" on the lhs;
nipkow@66541
  1081
  - "eta_expand" for printing eta-expanded terms.
nipkow@66541
  1082
wenzelm@66472
  1083
* Theory "HOL-Library.Permutations": theorem bij_swap_ompose_bij has
wenzelm@66472
  1084
been renamed to bij_swap_compose_bij. INCOMPATIBILITY.
wenzelm@66472
  1085
lp15@66643
  1086
* New theory "HOL-Library.Going_To_Filter" providing the "f going_to F"
eberlm@66488
  1087
filter for describing points x such that f(x) is in the filter F.
eberlm@66488
  1088
eberlm@66480
  1089
* Theory "HOL-Library.Formal_Power_Series": constants X/E/L/F have been
eberlm@66480
  1090
renamed to fps_X/fps_exp/fps_ln/fps_hypergeo to avoid polluting the name
wenzelm@66472
  1091
space. INCOMPATIBILITY.
wenzelm@66472
  1092
wenzelm@66472
  1093
* Theory "HOL-Library.FinFun" has been moved to AFP (again).
wenzelm@66472
  1094
INCOMPATIBILITY.
wenzelm@66472
  1095
wenzelm@66472
  1096
* Theory "HOL-Library.FuncSet": some old and rarely used ASCII
wenzelm@66472
  1097
replacement syntax has been removed. INCOMPATIBILITY, standard syntax
wenzelm@66472
  1098
with symbols should be used instead. The subsequent commands help to
wenzelm@66472
  1099
reproduce the old forms, e.g. to simplify porting old theories:
wenzelm@66472
  1100
wenzelm@66472
  1101
syntax (ASCII)
wenzelm@66472
  1102
  "_PiE" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PIE _:_./ _)" 10)
wenzelm@66472
  1103
  "_Pi"  :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PI _:_./ _)" 10)
wenzelm@66472
  1104
  "_lam" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'a \<Rightarrow> 'b \<Rightarrow> ('a \<Rightarrow> 'b)"  ("(3%_:_./ _)" [0,0,3] 3)
wenzelm@66472
  1105
wenzelm@66472
  1106
* Theory "HOL-Library.Multiset": the simprocs on subsets operators of
wenzelm@66472
  1107
multisets have been renamed:
wenzelm@66472
  1108
wenzelm@66472
  1109
  msetless_cancel_numerals ~> msetsubset_cancel
wenzelm@66472
  1110
  msetle_cancel_numerals ~> msetsubset_eq_cancel
wenzelm@66472
  1111
wenzelm@66472
  1112
INCOMPATIBILITY.
wenzelm@66472
  1113
lars@66481
  1114
* Theory "HOL-Library.Pattern_Aliases" provides input and output syntax
lars@66481
  1115
for pattern aliases as known from Haskell, Scala and ML.
blanchet@65515
  1116
Andreas@66563
  1117
* Theory "HOL-Library.Uprod" formalizes the type of unordered pairs.
Andreas@66563
  1118
wenzelm@64898
  1119
* Session HOL-Analysis: more material involving arcs, paths, covering
wenzelm@66650
  1120
spaces, innessential maps, retracts, infinite products, simplicial
wenzelm@66650
  1121
complexes. Baire Category theorem. Major results include the Jordan
wenzelm@66650
  1122
Curve Theorem and the Great Picard Theorem.
wenzelm@66472
  1123
wenzelm@66472
  1124
* Session HOL-Algebra has been extended by additional lattice theory:
wenzelm@66472
  1125
the Knaster-Tarski fixed point theorem and Galois Connections.
wenzelm@66472
  1126
wenzelm@66472
  1127
* Sessions HOL-Computational_Algebra and HOL-Number_Theory: new notions
wenzelm@66472
  1128
of squarefreeness, n-th powers, and prime powers.
wenzelm@66472
  1129
wenzelm@66472
  1130
* Session "HOL-Computional_Algebra" covers many previously scattered
wenzelm@66472
  1131
theories, notably Euclidean_Algorithm, Factorial_Ring,
wenzelm@66472
  1132
Formal_Power_Series, Fraction_Field, Fundamental_Theorem_Algebra,
wenzelm@66472
  1133
Normalized_Fraction, Polynomial_FPS, Polynomial, Primes. Minor
wenzelm@66472
  1134
INCOMPATIBILITY.
Mathias@65027
  1135
wenzelm@60331
  1136
wenzelm@64844
  1137
*** System ***
wenzelm@64844
  1138
wenzelm@66474
  1139
* Isabelle/Scala: the SQL module supports access to relational
wenzelm@66474
  1140
databases, either as plain file (SQLite) or full-scale server
wenzelm@66474
  1141
(PostgreSQL via local port or remote ssh connection).
wenzelm@66474
  1142
wenzelm@66474
  1143
* Results of "isabelle build" are recorded as SQLite database (i.e.
wenzelm@66474
  1144
"Application File Format" in the sense of
wenzelm@66474
  1145
https://www.sqlite.org/appfileformat.html). This allows systematic
wenzelm@66474
  1146
access via operations from module Sessions.Store in Isabelle/Scala.
wenzelm@66474
  1147
wenzelm@66472
  1148
* System option "parallel_proofs" is 1 by default (instead of more
wenzelm@66472
  1149
aggressive 2). This requires less heap space and avoids burning parallel
wenzelm@66472
  1150
CPU cycles, while full subproof parallelization is enabled for repeated
wenzelm@66472
  1151
builds (according to parallel_subproofs_threshold).
wenzelm@65072
  1152
wenzelm@65448
  1153
* System option "record_proofs" allows to change the global
wenzelm@65448
  1154
Proofterm.proofs variable for a session. Regular values are are 0, 1, 2;
wenzelm@65448
  1155
a negative value means the current state in the ML heap image remains
wenzelm@65448
  1156
unchanged.
wenzelm@65448
  1157
wenzelm@66472
  1158
* Isabelle settings variable ISABELLE_SCALA_BUILD_OPTIONS has been
wenzelm@66472
  1159
renamed to ISABELLE_SCALAC_OPTIONS. Rare INCOMPATIBILITY.
wenzelm@66472
  1160
wenzelm@66472
  1161
* Isabelle settings variables ISABELLE_WINDOWS_PLATFORM,
wenzelm@66472
  1162
ISABELLE_WINDOWS_PLATFORM32, ISABELLE_WINDOWS_PLATFORM64 indicate the
wenzelm@66472
  1163
native Windows platform (independently of the Cygwin installation). This
wenzelm@66472
  1164
is analogous to ISABELLE_PLATFORM, ISABELLE_PLATFORM32,
wenzelm@66472
  1165
ISABELLE_PLATFORM64.
wenzelm@65557
  1166
wenzelm@66786
  1167
* Command-line tool "isabelle build_docker" builds a Docker image from
wenzelm@66786
  1168
the Isabelle application bundle for Linux. See also
wenzelm@66786
  1169
https://hub.docker.com/r/makarius/isabelle
wenzelm@66786
  1170
wenzelm@66473
  1171
* Command-line tool "isabelle vscode_server" provides a Language Server
wenzelm@66473
  1172
Protocol implementation, e.g. for the Visual Studio Code editor. It
wenzelm@66473
  1173
serves as example for alternative PIDE front-ends.
wenzelm@66473
  1174
wenzelm@66472
  1175
* Command-line tool "isabelle imports" helps to maintain theory imports
wenzelm@66671
  1176
wrt. session structure. Examples for the main Isabelle distribution:
wenzelm@66472
  1177
wenzelm@66472
  1178
  isabelle imports -I -a
wenzelm@66472
  1179
  isabelle imports -U -a
wenzelm@66472
  1180
  isabelle imports -U -i -a
wenzelm@66472
  1181
  isabelle imports -M -a -d '~~/src/Benchmarks'
wenzelm@66472
  1182
wenzelm@64844
  1183
wenzelm@67099
  1184
wenzelm@64072
  1185
New in Isabelle2016-1 (December 2016)
wenzelm@64072
  1186
-------------------------------------
wenzelm@62216
  1187
wenzelm@62440
  1188
*** General ***
wenzelm@62440
  1189
wenzelm@64390
  1190
* Splitter in proof methods "simp", "auto" and friends:
wenzelm@64390
  1191
  - The syntax "split add" has been discontinued, use plain "split",
wenzelm@64390
  1192
    INCOMPATIBILITY.
wenzelm@64390
  1193
  - For situations with many conditional or case expressions, there is
wenzelm@64390
  1194
    an alternative splitting strategy that can be much faster. It is
wenzelm@64390
  1195
    selected by writing "split!" instead of "split". It applies safe
wenzelm@64390
  1196
    introduction and elimination rules after each split rule. As a
wenzelm@64390
  1197
    result the subgoal may be split into several subgoals.
wenzelm@64390
  1198
wenzelm@63273
  1199
* Command 'bundle' provides a local theory target to define a bundle
wenzelm@63273
  1200
from the body of specification commands (such as 'declare',
wenzelm@63273
  1201
'declaration', 'notation', 'lemmas', 'lemma'). For example:
wenzelm@63273
  1202
wenzelm@63273
  1203
bundle foo
wenzelm@63273
  1204
begin
wenzelm@63273
  1205
  declare a [simp]
wenzelm@63273
  1206
  declare b [intro]
wenzelm@63273
  1207
end
wenzelm@63272
  1208
wenzelm@63282
  1209
* Command 'unbundle' is like 'include', but works within a local theory
wenzelm@63282
  1210
context. Unlike "context includes ... begin", the effect of 'unbundle'
wenzelm@63282
  1211
on the target context persists, until different declarations are given.
wenzelm@63282
  1212
wenzelm@63977
  1213
* Simplified outer syntax: uniform category "name" includes long
wenzelm@63977
  1214
identifiers. Former "xname" / "nameref" / "name reference" has been
wenzelm@63977
  1215
discontinued.
wenzelm@63977
  1216
wenzelm@63977
  1217
* Embedded content (e.g. the inner syntax of types, terms, props) may be
wenzelm@63977
  1218
delimited uniformly via cartouches. This works better than old-fashioned
wenzelm@63977
  1219
quotes when sub-languages are nested.
wenzelm@63977
  1220
wenzelm@63977
  1221
* Mixfix annotations support general block properties, with syntax
wenzelm@63977
  1222
"(\<open>x=a y=b z \<dots>\<close>". Notable property names are "indent", "consistent",
wenzelm@63977
  1223
"unbreakable", "markup". The existing notation "(DIGITS" is equivalent
wenzelm@63977
  1224
to "(\<open>indent=DIGITS\<close>". The former notation "(00" for unbreakable blocks
wenzelm@63977
  1225
is superseded by "(\<open>unbreabable\<close>" --- rare INCOMPATIBILITY.
nipkow@63650
  1226
wenzelm@63383
  1227
* Proof method "blast" is more robust wrt. corner cases of Pure
wenzelm@63383
  1228
statements without object-logic judgment.
wenzelm@63383
  1229
wenzelm@63624
  1230
* Commands 'prf' and 'full_prf' are somewhat more informative (again):
wenzelm@63977
  1231
proof terms are reconstructed and cleaned from administrative thm nodes.
wenzelm@63977
  1232
wenzelm@63977
  1233
* Code generator: config option "code_timing" triggers measurements of
wenzelm@63977
  1234
different phases of code generation. See src/HOL/ex/Code_Timing.thy for
wenzelm@63977
  1235
examples.
wenzelm@63977
  1236
wenzelm@63977
  1237
* Code generator: implicits in Scala (stemming from type class
wenzelm@63977
  1238
instances) are generated into companion object of corresponding type
wenzelm@63977
  1239
class, to resolve some situations where ambiguities may occur.
wenzelm@63977
  1240
wenzelm@64390
  1241
* Solve direct: option "solve_direct_strict_warnings" gives explicit
wenzelm@64390
  1242
warnings for lemma statements with trivial proofs.
haftmann@64013
  1243
wenzelm@64602
  1244
wenzelm@62904
  1245
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@62904
  1246
wenzelm@64527
  1247
* More aggressive flushing of machine-generated input, according to
wenzelm@64527
  1248
system option editor_generated_input_delay (in addition to existing
wenzelm@64527
  1249
editor_input_delay for regular user edits). This may affect overall PIDE
wenzelm@64527
  1250
reactivity and CPU usage.
wenzelm@64527
  1251
wenzelm@64390
  1252
* Syntactic indentation according to Isabelle outer syntax. Action
wenzelm@64390
  1253
"indent-lines" (shortcut C+i) indents the current line according to
wenzelm@64390
  1254
command keywords and some command substructure. Action
wenzelm@64390
  1255
"isabelle.newline" (shortcut ENTER) indents the old and the new line
wenzelm@64390
  1256
according to command keywords only; see also option
wenzelm@64390
  1257
"jedit_indent_newline".
wenzelm@64390
  1258
wenzelm@64390
  1259
* Semantic indentation for unstructured proof scripts ('apply' etc.) via
wenzelm@64390
  1260
number of subgoals. This requires information of ongoing document
wenzelm@64390
  1261
processing and may thus lag behind, when the user is editing too
wenzelm@64390
  1262
quickly; see also option "jedit_script_indent" and
wenzelm@64390
  1263
"jedit_script_indent_limit".
wenzelm@64390
  1264
wenzelm@64390
  1265
* Refined folding mode "isabelle" based on Isar syntax: 'next' and 'qed'
wenzelm@64390
  1266
are treated as delimiters for fold structure; 'begin' and 'end'
wenzelm@64390
  1267
structure of theory specifications is treated as well.
wenzelm@64390
  1268
wenzelm@64390
  1269
* Command 'proof' provides information about proof outline with cases,
wenzelm@64390
  1270
e.g. for proof methods "cases", "induct", "goal_cases".
wenzelm@64390
  1271
wenzelm@64390
  1272
* Completion templates for commands involving "begin ... end" blocks,
wenzelm@64390
  1273
e.g. 'context', 'notepad'.
wenzelm@64390
  1274
wenzelm@64390
  1275
* Sidekick parser "isabelle-context" shows nesting of context blocks
wenzelm@64390
  1276
according to 'begin' and 'end' structure.
wenzelm@64390
  1277
wenzelm@63977
  1278
* Highlighting of entity def/ref positions wrt. cursor.
wenzelm@63977
  1279
wenzelm@63977
  1280
* Action "isabelle.select-entity" (shortcut CS+ENTER) selects all
wenzelm@64514
  1281
occurrences of the formal entity at the caret position. This facilitates
wenzelm@63977
  1282
systematic renaming.
wenzelm@63977
  1283
wenzelm@63977
  1284
* PIDE document markup works across multiple Isar commands, e.g. the
wenzelm@63977
  1285
results established at the end of a proof are properly identified in the
wenzelm@63977
  1286
theorem statement.
wenzelm@63977
  1287
wenzelm@63977
  1288
* Cartouche abbreviations work both for " and ` to accomodate typical
wenzelm@63977
  1289
situations where old ASCII notation may be updated.
wenzelm@63977
  1290
wenzelm@63875
  1291
* Dockable window "Symbols" also provides access to 'abbrevs' from the
wenzelm@63875
  1292
outer syntax of the current theory buffer. This provides clickable
wenzelm@63875
  1293
syntax templates, including entries with empty abbrevs name (which are
wenzelm@63875
  1294
inaccessible via keyboard completion).
wenzelm@63875
  1295
wenzelm@63022
  1296
* IDE support for the Isabelle/Pure bootstrap process, with the
wenzelm@63022
  1297
following independent stages:
wenzelm@63022
  1298
wenzelm@63022
  1299
  src/Pure/ROOT0.ML
wenzelm@63022
  1300
  src/Pure/ROOT.ML
wenzelm@63022
  1301
  src/Pure/Pure.thy
wenzelm@63022
  1302
  src/Pure/ML_Bootstrap.thy
wenzelm@63022
  1303
wenzelm@63022
  1304
The ML ROOT files act like quasi-theories in the context of theory
wenzelm@63022
  1305
ML_Bootstrap: this allows continuous checking of all loaded ML files.
wenzelm@63022
  1306
The theory files are presented with a modified header to import Pure
wenzelm@63022
  1307
from the running Isabelle instance. Results from changed versions of
wenzelm@63022
  1308
each stage are *not* propagated to the next stage, and isolated from the
wenzelm@63022
  1309
actual Isabelle/Pure that runs the IDE itself. The sequential
wenzelm@63307
  1310
dependencies of the above files are only observed for batch build.
wenzelm@62904
  1311
wenzelm@63977
  1312
* Isabelle/ML and Standard ML files are presented in Sidekick with the
wenzelm@63977
  1313
tree structure of section headings: this special comment format is
wenzelm@63977
  1314
described in "implementation" chapter 0, e.g. (*** section ***).
wenzelm@63461
  1315
wenzelm@63581
  1316
* Additional abbreviations for syntactic completion may be specified
wenzelm@63871
  1317
within the theory header as 'abbrevs'. The theory syntax for 'keywords'
wenzelm@63871
  1318
has been simplified accordingly: optional abbrevs need to go into the
wenzelm@63871
  1319
new 'abbrevs' section.
wenzelm@63871
  1320
wenzelm@63871
  1321
* Global abbreviations via $ISABELLE_HOME/etc/abbrevs and
wenzelm@63871
  1322
$ISABELLE_HOME_USER/etc/abbrevs are no longer supported. Minor
wenzelm@63871
  1323
INCOMPATIBILITY, use 'abbrevs' within theory header instead.
wenzelm@63579
  1324
wenzelm@64390
  1325
* Action "isabelle.keymap-merge" asks the user to resolve pending
wenzelm@64390
  1326
Isabelle keymap changes that are in conflict with the current jEdit
wenzelm@64390
  1327
keymap; non-conflicting changes are always applied implicitly. This
wenzelm@64390
  1328
action is automatically invoked on Isabelle/jEdit startup and thus
wenzelm@64390
  1329
increases chances that users see new keyboard shortcuts when re-using
wenzelm@64390
  1330
old keymaps.
wenzelm@64390
  1331
wenzelm@63675
  1332
* ML and document antiquotations for file-systems paths are more uniform
wenzelm@63675
  1333
and diverse:
wenzelm@63675
  1334
wenzelm@63675
  1335
  @{path NAME}   -- no file-system check
wenzelm@63675
  1336
  @{file NAME}   -- check for plain file
wenzelm@63675
  1337
  @{dir NAME}    -- check for directory
wenzelm@63675
  1338
wenzelm@63675
  1339
Minor INCOMPATIBILITY, former uses of @{file} and @{file_unchecked} may
wenzelm@63675
  1340
have to be changed.
wenzelm@63669
  1341
wenzelm@63669
  1342
wenzelm@63977
  1343
*** Document preparation ***
wenzelm@63977
  1344
wenzelm@63977
  1345
* New symbol \<circle>, e.g. for temporal operator.
wenzelm@63977
  1346
wenzelm@64073
  1347
* New document and ML antiquotation @{locale} for locales, similar to
wenzelm@64073
  1348
existing antiquotation @{class}.
wenzelm@64073
  1349
wenzelm@63977
  1350
* Mixfix annotations support delimiters like \<^control>\<open>cartouche\<close> --
wenzelm@63977
  1351
this allows special forms of document output.
wenzelm@63977
  1352
wenzelm@63977
  1353
* Raw LaTeX output now works via \<^latex>\<open>...\<close> instead of raw control
wenzelm@63977
  1354
symbol \<^raw:...>. INCOMPATIBILITY, notably for LaTeXsugar.thy and its
wenzelm@63977
  1355
derivatives.
wenzelm@63977
  1356
wenzelm@63977
  1357
* \<^raw:...> symbols are no longer supported.
wenzelm@63977
  1358
wenzelm@63977
  1359
* Old 'header' command is no longer supported (legacy since
wenzelm@63977
  1360
Isabelle2015).
wenzelm@63977
  1361
wenzelm@63977
  1362
wenzelm@62312
  1363
*** Isar ***
wenzelm@62312
  1364
wenzelm@63180
  1365
* Many specification elements support structured statements with 'if' /
wenzelm@63180
  1366
'for' eigen-context, e.g. 'axiomatization', 'abbreviation',
wenzelm@63180
  1367
'definition', 'inductive', 'function'.
wenzelm@63180
  1368
wenzelm@63094
  1369
* Toplevel theorem statements support eigen-context notation with 'if' /
wenzelm@63284
  1370
'for' (in postfix), which corresponds to 'assumes' / 'fixes' in the
wenzelm@63094
  1371
traditional long statement form (in prefix). Local premises are called
wenzelm@63094
  1372
"that" or "assms", respectively. Empty premises are *not* bound in the
wenzelm@63094
  1373
context: INCOMPATIBILITY.
wenzelm@63094
  1374
wenzelm@63039
  1375
* Command 'define' introduces a local (non-polymorphic) definition, with
wenzelm@63039
  1376
optional abstraction over local parameters. The syntax resembles
wenzelm@63043
  1377
'definition' and 'obtain'. It fits better into the Isar language than
wenzelm@63043
  1378
old 'def', which is now a legacy feature.
wenzelm@63039
  1379
wenzelm@63059
  1380
* Command 'obtain' supports structured statements with 'if' / 'for'
wenzelm@63059
  1381
context.
wenzelm@63059
  1382
wenzelm@62312
  1383
* Command '\<proof>' is an alias for 'sorry', with different
wenzelm@62312
  1384
typesetting. E.g. to produce proof holes in examples and documentation.
wenzelm@62216
  1385
wenzelm@63977
  1386
* The defining position of a literal fact \<open>prop\<close> is maintained more
wenzelm@63977
  1387
carefully, and made accessible as hyperlink in the Prover IDE.
wenzelm@63977
  1388
wenzelm@63977
  1389
* Commands 'finally' and 'ultimately' used to expose the result as
wenzelm@63977
  1390
literal fact: this accidental behaviour has been discontinued. Rare
wenzelm@63977
  1391
INCOMPATIBILITY, use more explicit means to refer to facts in Isar.
wenzelm@63977
  1392
wenzelm@63977
  1393
* Command 'axiomatization' has become more restrictive to correspond
wenzelm@63977
  1394
better to internal axioms as singleton facts with mandatory name. Minor
wenzelm@63977
  1395
INCOMPATIBILITY.
wenzelm@62939
  1396
wenzelm@63259
  1397
* Proof methods may refer to the main facts via the dynamic fact
wenzelm@63259
  1398
"method_facts". This is particularly useful for Eisbach method
wenzelm@63259
  1399
definitions.
wenzelm@63259
  1400
wenzelm@63527
  1401
* Proof method "use" allows to modify the main facts of a given method
wenzelm@63527
  1402
expression, e.g.
wenzelm@63259
  1403
wenzelm@63259
  1404
  (use facts in simp)
wenzelm@63259
  1405
  (use facts in \<open>simp add: ...\<close>)
wenzelm@63259
  1406
wenzelm@63977
  1407
* The old proof method "default" has been removed (legacy since
wenzelm@63977
  1408
Isabelle2016). INCOMPATIBILITY, use "standard" instead.
wenzelm@63977
  1409
wenzelm@62216
  1410
haftmann@63165
  1411
*** Pure ***
haftmann@63165
  1412
wenzelm@63977
  1413
* Pure provides basic versions of proof methods "simp" and "simp_all"
wenzelm@63977
  1414
that only know about meta-equality (==). Potential INCOMPATIBILITY in
wenzelm@63977
  1415
theory imports that merge Pure with e.g. Main of Isabelle/HOL: the order
wenzelm@63977
  1416
is relevant to avoid confusion of Pure.simp vs. HOL.simp.
wenzelm@63977
  1417
wenzelm@63977
  1418
* The command 'unfolding' and proof method "unfold" include a second
wenzelm@63977
  1419
stage where given equations are passed through the attribute "abs_def"
wenzelm@63977
  1420
before rewriting. This ensures that definitions are fully expanded,
wenzelm@63977
  1421
regardless of the actual parameters that are provided. Rare
wenzelm@63977
  1422
INCOMPATIBILITY in some corner cases: use proof method (simp only:)
wenzelm@63977
  1423
instead, or declare [[unfold_abs_def = false]] in the proof context.
wenzelm@63977
  1424
wenzelm@63977
  1425
* Type-inference improves sorts of newly introduced type variables for
wenzelm@63977
  1426
the object-logic, using its base sort (i.e. HOL.type for Isabelle/HOL).
wenzelm@63977
  1427
Thus terms like "f x" or "\<And>x. P x" without any further syntactic context
wenzelm@63977
  1428
produce x::'a::type in HOL instead of x::'a::{} in Pure. Rare
wenzelm@63977
  1429
INCOMPATIBILITY, need to provide explicit type constraints for Pure
wenzelm@63977
  1430
types where this is really intended.
haftmann@63350
  1431
haftmann@63165
  1432
blanchet@62327
  1433
*** HOL ***
blanchet@62327
  1434
wenzelm@63977
  1435
* New proof method "argo" using the built-in Argo solver based on SMT
wenzelm@63977
  1436
technology. The method can be used to prove goals of quantifier-free
wenzelm@63977
  1437
propositional logic, goals based on a combination of quantifier-free
wenzelm@63977
  1438
propositional logic with equality, and goals based on a combination of
wenzelm@63977
  1439
quantifier-free propositional logic with linear real arithmetic
wenzelm@63977
  1440
including min/max/abs. See HOL/ex/Argo_Examples.thy for examples.
wenzelm@63977
  1441
blanchet@66614
  1442
* The new "nunchaku" command integrates the Nunchaku model finder. The
wenzelm@64390
  1443
tool is experimental. See ~~/src/HOL/Nunchaku/Nunchaku.thy for details.
wenzelm@64390
  1444
wenzelm@63977
  1445
* Metis: The problem encoding has changed very slightly. This might
blanchet@63785
  1446
break existing proofs. INCOMPATIBILITY.
blanchet@63785
  1447
blanchet@63116
  1448
* Sledgehammer:
lp15@63967
  1449
  - The MaSh relevance filter is now faster than before.
blanchet@63116
  1450
  - Produce syntactically correct Vampire 4.0 problem files.
blanchet@63116
  1451
blanchet@62327
  1452
* (Co)datatype package:
blanchet@62693
  1453
  - New commands for defining corecursive functions and reasoning about
blanchet@62693
  1454
    them in "~~/src/HOL/Library/BNF_Corec.thy": 'corec', 'corecursive',
blanchet@62693
  1455
    'friend_of_corec', and 'corecursion_upto'; and 'corec_unique' proof
blanchet@62842
  1456
    method. See 'isabelle doc corec'.
wenzelm@63977
  1457
  - The predicator :: ('a \<Rightarrow> bool) \<Rightarrow> 'a F \<Rightarrow> bool is now a first-class
blanchet@63855
  1458
    citizen in bounded natural functors.
blanchet@62693
  1459
  - 'primrec' now allows nested calls through the predicator in addition
blanchet@62327
  1460
    to the map function.
blanchet@63855
  1461
  - 'bnf' automatically discharges reflexive proof obligations.
blanchet@62693
  1462
  - 'bnf' outputs a slightly modified proof obligation expressing rel in
traytel@62332
  1463
       terms of map and set
blanchet@63855
  1464
       (not giving a specification for rel makes this one reflexive).
blanchet@62693
  1465
  - 'bnf' outputs a new proof obligation expressing pred in terms of set
blanchet@63855
  1466
       (not giving a specification for pred makes this one reflexive).
blanchet@63855
  1467
    INCOMPATIBILITY: manual 'bnf' declarations may need adjustment.
blanchet@62335
  1468
  - Renamed lemmas:
blanchet@62335
  1469
      rel_prod_apply ~> rel_prod_inject
blanchet@62335
  1470
      pred_prod_apply ~> pred_prod_inject
blanchet@62335
  1471
    INCOMPATIBILITY.
blanchet@62536
  1472
  - The "size" plugin has been made compatible again with locales.
blanchet@63855
  1473
  - The theorems about "rel" and "set" may have a slightly different (but
blanchet@63855
  1474
    equivalent) form.
blanchet@63855
  1475
    INCOMPATIBILITY.
blanchet@62327
  1476
wenzelm@63977
  1477
* The 'coinductive' command produces a proper coinduction rule for
wenzelm@63977
  1478
mutual coinductive predicates. This new rule replaces the old rule,
wenzelm@63977
  1479
which exposed details of the internal fixpoint construction and was
wenzelm@63977
  1480
hard to use. INCOMPATIBILITY.
wenzelm@63977
  1481
wenzelm@63977
  1482
* New abbreviations for negated existence (but not bounded existence):
wenzelm@63977
  1483
wenzelm@63977
  1484
  \<nexists>x. P x \<equiv> \<not> (\<exists>x. P x)
wenzelm@63977
  1485
  \<nexists>!x. P x \<equiv> \<not> (\<exists>!x. P x)
wenzelm@63977
  1486
wenzelm@63977
  1487
* The print mode "HOL" for ASCII syntax of binders "!", "?", "?!", "@"
wenzelm@63977
  1488
has been removed for output. It is retained for input only, until it is
wenzelm@63977
  1489
eliminated altogether.
wenzelm@63977
  1490
wenzelm@63977
  1491
* The unique existence quantifier no longer provides 'binder' syntax,
wenzelm@63977
  1492
but uses syntax translations (as for bounded unique existence). Thus
wenzelm@63977
  1493
iterated quantification \<exists>!x y. P x y with its slightly confusing
wenzelm@63977
  1494
sequential meaning \<exists>!x. \<exists>!y. P x y is no longer possible. Instead,
wenzelm@63977
  1495
pattern abstraction admits simultaneous unique existence \<exists>!(x, y). P x y
wenzelm@63977
  1496
(analogous to existing notation \<exists>!(x, y)\<in>A. P x y). Potential
wenzelm@63977
  1497
INCOMPATIBILITY in rare situations.
wenzelm@63977
  1498
wenzelm@63977
  1499
* Conventional syntax "%(). t" for unit abstractions. Slight syntactic
wenzelm@63977
  1500
INCOMPATIBILITY.
wenzelm@63977
  1501
wenzelm@64390
  1502
* Renamed constants and corresponding theorems:
wenzelm@64390
  1503
wenzelm@64390
  1504
    setsum ~> sum
wenzelm@64390
  1505
    setprod ~> prod
wenzelm@64390
  1506
    listsum ~> sum_list
wenzelm@64390
  1507
    listprod ~> prod_list
wenzelm@64390
  1508
wenzelm@64390
  1509
INCOMPATIBILITY.
wenzelm@64390
  1510
wenzelm@64390
  1511
* Sligthly more standardized theorem names:
wenzelm@64390
  1512
    sgn_times ~> sgn_mult
wenzelm@64390
  1513
    sgn_mult' ~> Real_Vector_Spaces.sgn_mult
wenzelm@64390
  1514
    divide_zero_left ~> div_0
wenzelm@64390
  1515
    zero_mod_left ~> mod_0
wenzelm@64390
  1516
    divide_zero ~> div_by_0
wenzelm@64390
  1517
    divide_1 ~> div_by_1
wenzelm@64390
  1518
    nonzero_mult_divide_cancel_left ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1519
    div_mult_self1_is_id ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1520
    nonzero_mult_divide_cancel_right ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1521
    div_mult_self2_is_id ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1522
    is_unit_divide_mult_cancel_left ~> is_unit_div_mult_cancel_left
wenzelm@64390
  1523
    is_unit_divide_mult_cancel_right ~> is_unit_div_mult_cancel_right
wenzelm@64390
  1524
    mod_div_equality ~> div_mult_mod_eq
wenzelm@64390
  1525
    mod_div_equality2 ~> mult_div_mod_eq
wenzelm@64390
  1526
    mod_div_equality3 ~> mod_div_mult_eq
wenzelm@64390
  1527
    mod_div_equality4 ~> mod_mult_div_eq
wenzelm@64390
  1528
    minus_div_eq_mod ~> minus_div_mult_eq_mod
wenzelm@64390
  1529
    minus_div_eq_mod2 ~> minus_mult_div_eq_mod
wenzelm@64390
  1530
    minus_mod_eq_div ~> minus_mod_eq_div_mult
wenzelm@64390
  1531
    minus_mod_eq_div2 ~> minus_mod_eq_mult_div
wenzelm@64390
  1532
    div_mod_equality' ~> minus_mod_eq_div_mult [symmetric]
wenzelm@64390
  1533
    mod_div_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1534
    zmod_zdiv_equality ~> mult_div_mod_eq [symmetric]
wenzelm@64390
  1535
    zmod_zdiv_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1536
    Divides.mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1537
    mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1538
    zmult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1539
    div_1 ~> div_by_Suc_0
wenzelm@64390
  1540
    mod_1 ~> mod_by_Suc_0
wenzelm@64390
  1541
INCOMPATIBILITY.
wenzelm@64390
  1542
wenzelm@64390
  1543
* New type class "idom_abs_sgn" specifies algebraic properties
wenzelm@64390
  1544
of sign and absolute value functions.  Type class "sgn_if" has
wenzelm@64390
  1545
disappeared.  Slight INCOMPATIBILITY.
wenzelm@64390
  1546
wenzelm@64390
  1547
* Dedicated syntax LENGTH('a) for length of types.
wenzelm@64390
  1548
wenzelm@63977
  1549
* Characters (type char) are modelled as finite algebraic type
wenzelm@63977
  1550
corresponding to {0..255}.
wenzelm@63977
  1551
wenzelm@63977
  1552
  - Logical representation:
wenzelm@63977
  1553
    * 0 is instantiated to the ASCII zero character.
wenzelm@63977
  1554
    * All other characters are represented as "Char n"
wenzelm@63977
  1555
      with n being a raw numeral expression less than 256.
wenzelm@63977
  1556
    * Expressions of the form "Char n" with n greater than 255
wenzelm@63977
  1557
      are non-canonical.
wenzelm@63977
  1558
  - Printing and parsing:
wenzelm@63977
  1559
    * Printable characters are printed and parsed as "CHR ''\<dots>''"
wenzelm@63977
  1560
      (as before).
wenzelm@63977
  1561
    * The ASCII zero character is printed and parsed as "0".
wenzelm@63977
  1562
    * All other canonical characters are printed as "CHR 0xXX"
wenzelm@63977
  1563
      with XX being the hexadecimal character code.  "CHR n"
wenzelm@63977
  1564
      is parsable for every numeral expression n.
wenzelm@63977
  1565
    * Non-canonical characters have no special syntax and are
wenzelm@63977
  1566
      printed as their logical representation.
wenzelm@63977
  1567
  - Explicit conversions from and to the natural numbers are
wenzelm@63977
  1568
    provided as char_of_nat, nat_of_char (as before).
wenzelm@63977
  1569
  - The auxiliary nibble type has been discontinued.
wenzelm@63977
  1570
wenzelm@63977
  1571
INCOMPATIBILITY.
wenzelm@63977
  1572
wenzelm@63977
  1573
* Type class "div" with operation "mod" renamed to type class "modulo"
wenzelm@63977
  1574
with operation "modulo", analogously to type class "divide". This
wenzelm@63977
  1575
eliminates the need to qualify any of those names in the presence of
wenzelm@63977
  1576
infix "mod" syntax. INCOMPATIBILITY.
wenzelm@63977
  1577
wenzelm@63979
  1578
* Statements and proofs of Knaster-Tarski fixpoint combinators lfp/gfp
wenzelm@63979
  1579
have been clarified. The fixpoint properties are lfp_fixpoint, its
wenzelm@63979
  1580
symmetric lfp_unfold (as before), and the duals for gfp. Auxiliary items
wenzelm@63979
  1581
for the proof (lfp_lemma2 etc.) are no longer exported, but can be
wenzelm@63979
  1582
easily recovered by composition with eq_refl. Minor INCOMPATIBILITY.
wenzelm@63979
  1583
wenzelm@63977
  1584
* Constant "surj" is a mere input abbreviation, to avoid hiding an
wenzelm@63977
  1585
equation in term output. Minor INCOMPATIBILITY.
wenzelm@63977
  1586
wenzelm@63977
  1587
* Command 'code_reflect' accepts empty constructor lists for datatypes,
wenzelm@63977
  1588
which renders those abstract effectively.
wenzelm@63977
  1589
wenzelm@63977
  1590
* Command 'export_code' checks given constants for abstraction
wenzelm@63977
  1591
violations: a small guarantee that given constants specify a safe
wenzelm@63977
  1592
interface for the generated code.
wenzelm@63977
  1593
wenzelm@63977
  1594
* Code generation for Scala: ambiguous implicts in class diagrams are
wenzelm@63977
  1595
spelt out explicitly.
wenzelm@63977
  1596
wenzelm@63977
  1597
* Static evaluators (Code_Evaluation.static_* in Isabelle/ML) rely on
wenzelm@63977
  1598
explicitly provided auxiliary definitions for required type class
wenzelm@64390
  1599
dictionaries rather than half-working magic. INCOMPATIBILITY, see the
wenzelm@64390
  1600
tutorial on code generation for details.
wenzelm@64390
  1601
wenzelm@64390
  1602
* Theory Set_Interval: substantial new theorems on indexed sums and
wenzelm@64390
  1603
products.
wenzelm@63977
  1604
wenzelm@63977
  1605
* Locale bijection establishes convenient default simp rules such as
wenzelm@63977
  1606
"inv f (f a) = a" for total bijections.
wenzelm@63977
  1607
wenzelm@63977
  1608
* Abstract locales semigroup, abel_semigroup, semilattice,
wenzelm@63977
  1609
semilattice_neutr, ordering, ordering_top, semilattice_order,
wenzelm@63977
  1610
semilattice_neutr_order, comm_monoid_set, semilattice_set,
wenzelm@63977
  1611
semilattice_neutr_set, semilattice_order_set,
wenzelm@63977
  1612
semilattice_order_neutr_set monoid_list, comm_monoid_list,
wenzelm@63977
  1613
comm_monoid_list_set, comm_monoid_mset, comm_monoid_fun use boldified
wenzelm@63977
  1614
syntax uniformly that does not clash with corresponding global syntax.
wenzelm@63977
  1615
INCOMPATIBILITY.
wenzelm@63977
  1616
wenzelm@63977
  1617
* Former locale lifting_syntax is now a bundle, which is easier to
wenzelm@63977
  1618
include in a local context or theorem statement, e.g. "context includes
wenzelm@63977
  1619
lifting_syntax begin ... end". Minor INCOMPATIBILITY.
wenzelm@63977
  1620
wenzelm@63807
  1621
* Some old / obsolete theorems have been renamed / removed, potential
wenzelm@63807
  1622
INCOMPATIBILITY.
wenzelm@63807
  1623
wenzelm@63807
  1624
  nat_less_cases  --  removed, use linorder_cases instead
wenzelm@63807
  1625
  inv_image_comp  --  removed, use image_inv_f_f instead
wenzelm@63807
  1626
  image_surj_f_inv_f  ~>  image_f_inv_f
wenzelm@63113
  1627
Mathias@63456
  1628
* Some theorems about groups and orders have been generalised from
Mathias@63456
  1629
  groups to semi-groups that are also monoids:
Mathias@63456
  1630
    le_add_same_cancel1
Mathias@63456
  1631
    le_add_same_cancel2
Mathias@63456
  1632
    less_add_same_cancel1
Mathias@63456
  1633
    less_add_same_cancel2
Mathias@63456
  1634
    add_le_same_cancel1
Mathias@63456
  1635
    add_le_same_cancel2
Mathias@63456
  1636
    add_less_same_cancel1
Mathias@63456
  1637
    add_less_same_cancel2
Mathias@63456
  1638
Mathias@63456
  1639
* Some simplifications theorems about rings have been removed, since
Mathias@63456
  1640
  superseeded by a more general version:
Mathias@63456
  1641
    less_add_cancel_left_greater_zero ~> less_add_same_cancel1
Mathias@63456
  1642
    less_add_cancel_right_greater_zero ~> less_add_same_cancel2
Mathias@63456
  1643
    less_eq_add_cancel_left_greater_eq_zero ~> le_add_same_cancel1
Mathias@63456
  1644
    less_eq_add_cancel_right_greater_eq_zero ~> le_add_same_cancel2
Mathias@63456
  1645
    less_eq_add_cancel_left_less_eq_zero ~> add_le_same_cancel1
Mathias@63456
  1646
    less_eq_add_cancel_right_less_eq_zero ~> add_le_same_cancel2
Mathias@63456
  1647
    less_add_cancel_left_less_zero ~> add_less_same_cancel1
Mathias@63456
  1648
    less_add_cancel_right_less_zero ~> add_less_same_cancel2
Mathias@63456
  1649
INCOMPATIBILITY.
Mathias@63456
  1650
wenzelm@62407
  1651
* Renamed split_if -> if_split and split_if_asm -> if_split_asm to
wenzelm@62407
  1652
resemble the f.split naming convention, INCOMPATIBILITY.
nipkow@62396
  1653
wenzelm@63977
  1654
* Added class topological_monoid.
wenzelm@63977
  1655
wenzelm@64391
  1656
* The following theorems have been renamed:
wenzelm@64391
  1657
nipkow@64457
  1658
  setsum_left_distrib ~> sum_distrib_right
nipkow@64457
  1659
  setsum_right_distrib ~> sum_distrib_left
wenzelm@64391
  1660
wenzelm@64391
  1661
INCOMPATIBILITY.
wenzelm@64391
  1662
wenzelm@64391
  1663
* Compound constants INFIMUM and SUPREMUM are mere abbreviations now.
wenzelm@64391
  1664
INCOMPATIBILITY.
wenzelm@64391
  1665
wenzelm@64391
  1666
* "Gcd (f ` A)" and "Lcm (f ` A)" are printed with optional
wenzelm@64391
  1667
comprehension-like syntax analogously to "Inf (f ` A)" and "Sup (f `
wenzelm@64391
  1668
A)".
wenzelm@64391
  1669
wenzelm@64391
  1670
* Class semiring_Lcd merged into semiring_Gcd. INCOMPATIBILITY.
wenzelm@64391
  1671
wenzelm@64391
  1672
* The type class ordered_comm_monoid_add is now called
wenzelm@64391
  1673
ordered_cancel_comm_monoid_add. A new type class ordered_comm_monoid_add
wenzelm@64391
  1674
is introduced as the combination of ordered_ab_semigroup_add +
wenzelm@64391
  1675
comm_monoid_add. INCOMPATIBILITY.
wenzelm@64391
  1676
wenzelm@64391
  1677
* Introduced the type classes canonically_ordered_comm_monoid_add and
wenzelm@64391
  1678
dioid.
wenzelm@64391
  1679
wenzelm@64391
  1680
* Introduced the type class ordered_ab_semigroup_monoid_add_imp_le. When
wenzelm@64391
  1681
instantiating linordered_semiring_strict and ordered_ab_group_add, an
wenzelm@64391
  1682
explicit instantiation of ordered_ab_semigroup_monoid_add_imp_le might
wenzelm@64391
  1683
be required. INCOMPATIBILITY.
nipkow@63117
  1684
haftmann@62348
  1685
* Dropped various legacy fact bindings, whose replacements are often
haftmann@62348
  1686
of a more general type also:
haftmann@62348
  1687
  lcm_left_commute_nat ~> lcm.left_commute
haftmann@62348
  1688
  lcm_left_commute_int ~> lcm.left_commute
haftmann@62348
  1689
  gcd_left_commute_nat ~> gcd.left_commute
haftmann@62348
  1690
  gcd_left_commute_int ~> gcd.left_commute
haftmann@62348
  1691
  gcd_greatest_iff_nat ~> gcd_greatest_iff
haftmann@62348
  1692
  gcd_greatest_iff_int ~> gcd_greatest_iff
haftmann@62348
  1693
  coprime_dvd_mult_nat ~> coprime_dvd_mult
haftmann@62348
  1694
  coprime_dvd_mult_int ~> coprime_dvd_mult
haftmann@62348
  1695
  zpower_numeral_even ~> power_numeral_even
haftmann@62348
  1696
  gcd_mult_cancel_nat ~> gcd_mult_cancel
haftmann@62348
  1697
  gcd_mult_cancel_int ~> gcd_mult_cancel
haftmann@62348
  1698
  div_gcd_coprime_nat ~> div_gcd_coprime
haftmann@62348
  1699
  div_gcd_coprime_int ~> div_gcd_coprime
haftmann@62348
  1700
  zpower_numeral_odd ~> power_numeral_odd
haftmann@62348
  1701
  zero_less_int_conv ~> of_nat_0_less_iff
haftmann@62348
  1702
  gcd_greatest_nat ~> gcd_greatest
haftmann@62348
  1703
  gcd_greatest_int ~> gcd_greatest
haftmann@62348
  1704
  coprime_mult_nat ~> coprime_mult
haftmann@62348
  1705
  coprime_mult_int ~> coprime_mult
haftmann@62348
  1706
  lcm_commute_nat ~> lcm.commute
haftmann@62348
  1707
  lcm_commute_int ~> lcm.commute
haftmann@62348
  1708
  int_less_0_conv ~> of_nat_less_0_iff
haftmann@62348
  1709
  gcd_commute_nat ~> gcd.commute
haftmann@62348
  1710
  gcd_commute_int ~> gcd.commute
haftmann@62348
  1711
  Gcd_insert_nat ~> Gcd_insert
haftmann@62348
  1712
  Gcd_insert_int ~> Gcd_insert
haftmann@62348
  1713
  of_int_int_eq ~> of_int_of_nat_eq
haftmann@62348
  1714
  lcm_least_nat ~> lcm_least
haftmann@62348
  1715
  lcm_least_int ~> lcm_least
haftmann@62348
  1716
  lcm_assoc_nat ~> lcm.assoc
haftmann@62348
  1717
  lcm_assoc_int ~> lcm.assoc
haftmann@62348
  1718
  int_le_0_conv ~> of_nat_le_0_iff
haftmann@62348
  1719
  int_eq_0_conv ~> of_nat_eq_0_iff
haftmann@62348
  1720
  Gcd_empty_nat ~> Gcd_empty
haftmann@62348
  1721
  Gcd_empty_int ~> Gcd_empty
haftmann@62348
  1722
  gcd_assoc_nat ~> gcd.assoc
haftmann@62348
  1723
  gcd_assoc_int ~> gcd.assoc
haftmann@62348
  1724
  zero_zle_int ~> of_nat_0_le_iff
haftmann@62348
  1725
  lcm_dvd2_nat ~> dvd_lcm2
haftmann@62348
  1726
  lcm_dvd2_int ~> dvd_lcm2
haftmann@62348
  1727
  lcm_dvd1_nat ~> dvd_lcm1
haftmann@62348
  1728
  lcm_dvd1_int ~> dvd_lcm1
haftmann@62348
  1729
  gcd_zero_nat ~> gcd_eq_0_iff
haftmann@62348
  1730
  gcd_zero_int ~> gcd_eq_0_iff
haftmann@62348
  1731
  gcd_dvd2_nat ~> gcd_dvd2
haftmann@62348
  1732
  gcd_dvd2_int ~> gcd_dvd2
haftmann@62348
  1733
  gcd_dvd1_nat ~> gcd_dvd1
haftmann@62348
  1734
  gcd_dvd1_int ~> gcd_dvd1
haftmann@62348
  1735
  int_numeral ~> of_nat_numeral
haftmann@62348
  1736
  lcm_ac_nat ~> ac_simps
haftmann@62348
  1737
  lcm_ac_int ~> ac_simps
haftmann@62348
  1738
  gcd_ac_nat ~> ac_simps
haftmann@62348
  1739
  gcd_ac_int ~> ac_simps
haftmann@62348
  1740
  abs_int_eq ~> abs_of_nat
haftmann@62348
  1741
  zless_int ~> of_nat_less_iff
haftmann@62348
  1742
  zdiff_int ~> of_nat_diff
haftmann@62348
  1743
  zadd_int ~> of_nat_add
haftmann@62348
  1744
  int_mult ~> of_nat_mult
haftmann@62348
  1745
  int_Suc ~> of_nat_Suc
haftmann@62348
  1746
  inj_int ~> inj_of_nat
haftmann@62348
  1747
  int_1 ~> of_nat_1
haftmann@62348
  1748
  int_0 ~> of_nat_0
haftmann@62353
  1749
  Lcm_empty_nat ~> Lcm_empty
haftmann@62353
  1750
  Lcm_empty_int ~> Lcm_empty
haftmann@62353
  1751
  Lcm_insert_nat ~> Lcm_insert
haftmann@62353
  1752
  Lcm_insert_int ~> Lcm_insert
haftmann@62353
  1753
  comp_fun_idem_gcd_nat ~> comp_fun_idem_gcd
haftmann@62353
  1754
  comp_fun_idem_gcd_int ~> comp_fun_idem_gcd
haftmann@62353
  1755
  comp_fun_idem_lcm_nat ~> comp_fun_idem_lcm
haftmann@62353
  1756
  comp_fun_idem_lcm_int ~> comp_fun_idem_lcm
haftmann@62353
  1757
  Lcm_eq_0 ~> Lcm_eq_0_I
haftmann@62353
  1758
  Lcm0_iff ~> Lcm_0_iff
haftmann@62353
  1759
  Lcm_dvd_int ~> Lcm_least
haftmann@62353
  1760
  divides_mult_nat ~> divides_mult
haftmann@62353
  1761
  divides_mult_int ~> divides_mult
haftmann@62353
  1762
  lcm_0_nat ~> lcm_0_right
haftmann@62353
  1763
  lcm_0_int ~> lcm_0_right
haftmann@62353
  1764
  lcm_0_left_nat ~> lcm_0_left
haftmann@62353
  1765
  lcm_0_left_int ~> lcm_0_left
haftmann@62353
  1766
  dvd_gcd_D1_nat ~> dvd_gcdD1
haftmann@62353
  1767
  dvd_gcd_D1_int ~> dvd_gcdD1
haftmann@62353
  1768
  dvd_gcd_D2_nat ~> dvd_gcdD2
haftmann@62353
  1769
  dvd_gcd_D2_int ~> dvd_gcdD2
haftmann@62353
  1770
  coprime_dvd_mult_iff_nat ~> coprime_dvd_mult_iff
haftmann@62353
  1771
  coprime_dvd_mult_iff_int ~> coprime_dvd_mult_iff
haftmann@62348
  1772
  realpow_minus_mult ~> power_minus_mult
haftmann@62348
  1773
  realpow_Suc_le_self ~> power_Suc_le_self
haftmann@62353
  1774
  dvd_Gcd, dvd_Gcd_nat, dvd_Gcd_int removed in favour of Gcd_greatest
haftmann@62347
  1775
INCOMPATIBILITY.
haftmann@62347
  1776
lp15@63967
  1777
* Renamed HOL/Quotient_Examples/FSet.thy to
wenzelm@63977
  1778
HOL/Quotient_Examples/Quotient_FSet.thy INCOMPATIBILITY.
wenzelm@63977
  1779
wenzelm@64390
  1780
* Session HOL-Library: theory FinFun bundles "finfun_syntax" and
wenzelm@64390
  1781
"no_finfun_syntax" allow to control optional syntax in local contexts;
wenzelm@64390
  1782
this supersedes former theory FinFun_Syntax. INCOMPATIBILITY, e.g. use
wenzelm@64390
  1783
"unbundle finfun_syntax" to imitate import of
wenzelm@64390
  1784
"~~/src/HOL/Library/FinFun_Syntax".
wenzelm@64390
  1785
wenzelm@64390
  1786
* Session HOL-Library: theory Multiset_Permutations (executably) defines
wenzelm@64390
  1787
the set of permutations of a given set or multiset, i.e. the set of all
wenzelm@64390
  1788
lists that contain every element of the carrier (multi-)set exactly
wenzelm@64390
  1789
once.
wenzelm@64390
  1790
wenzelm@64390
  1791
* Session HOL-Library: multiset membership is now expressed using
wenzelm@64390
  1792
set_mset rather than count.
wenzelm@64390
  1793
wenzelm@64390
  1794
  - Expressions "count M a > 0" and similar simplify to membership
wenzelm@64390
  1795
    by default.
wenzelm@64390
  1796
wenzelm@64390
  1797
  - Converting between "count M a = 0" and non-membership happens using
wenzelm@64390
  1798
    equations count_eq_zero_iff and not_in_iff.
wenzelm@64390
  1799
wenzelm@64390
  1800
  - Rules count_inI and in_countE obtain facts of the form
wenzelm@64390
  1801
    "count M a = n" from membership.
wenzelm@64390
  1802
wenzelm@64390
  1803
  - Rules count_in_diffI and in_diff_countE obtain facts of the form
wenzelm@64390
  1804
    "count M a = n + count N a" from membership on difference sets.
wenzelm@64390
  1805
wenzelm@64390
  1806
INCOMPATIBILITY.
wenzelm@64390
  1807
wenzelm@64390
  1808
* Session HOL-Library: theory LaTeXsugar uses new-style "dummy_pats" for
wenzelm@64390
  1809
displaying equations in functional programming style --- variables
wenzelm@64390
  1810
present on the left-hand but not on the righ-hand side are replaced by
wenzelm@64390
  1811
underscores.
wenzelm@64390
  1812
wenzelm@64390
  1813
* Session HOL-Library: theory Combinator_PER provides combinator to
wenzelm@64390
  1814
build partial equivalence relations from a predicate and an equivalence
wenzelm@64390
  1815
relation.
wenzelm@64390
  1816
wenzelm@64390
  1817
* Session HOL-Library: theory Perm provides basic facts about almost
wenzelm@64390
  1818
everywhere fix bijections.
wenzelm@64390
  1819
wenzelm@64390
  1820
* Session HOL-Library: theory Normalized_Fraction allows viewing an
wenzelm@64390
  1821
element of a field of fractions as a normalized fraction (i.e. a pair of
wenzelm@64390
  1822
numerator and denominator such that the two are coprime and the
wenzelm@64390
  1823
denominator is normalized wrt. unit factors).
wenzelm@64390
  1824
wenzelm@64390
  1825
* Session HOL-NSA has been renamed to HOL-Nonstandard_Analysis.
wenzelm@64390
  1826
wenzelm@64390
  1827
* Session HOL-Multivariate_Analysis has been renamed to HOL-Analysis.
wenzelm@64390
  1828
wenzelm@64390
  1829
* Session HOL-Analysis: measure theory has been moved here from
wenzelm@64390
  1830
HOL-Probability. When importing HOL-Analysis some theorems need
wenzelm@64390
  1831
additional name spaces prefixes due to name clashes. INCOMPATIBILITY.
wenzelm@64390
  1832
wenzelm@64390
  1833
* Session HOL-Analysis: more complex analysis including Cauchy's
wenzelm@64390
  1834
inequality, Liouville theorem, open mapping theorem, maximum modulus
wenzelm@64390
  1835
principle, Residue theorem, Schwarz Lemma.
wenzelm@64390
  1836
wenzelm@64390
  1837
* Session HOL-Analysis: Theory of polyhedra: faces, extreme points,
wenzelm@64390
  1838
polytopes, and the Krein–Milman Minkowski theorem.
wenzelm@64390
  1839
wenzelm@64390
  1840
* Session HOL-Analysis: Numerous results ported from the HOL Light
wenzelm@64390
  1841
libraries: homeomorphisms, continuous function extensions, invariance of
wenzelm@64390
  1842
domain.
wenzelm@64390
  1843
wenzelm@64390
  1844
* Session HOL-Probability: the type of emeasure and nn_integral was
wenzelm@64390
  1845
changed from ereal to ennreal, INCOMPATIBILITY.
wenzelm@64390
  1846
wenzelm@64390
  1847
  emeasure :: 'a measure \<Rightarrow> 'a set \<Rightarrow> ennreal
wenzelm@64390
  1848
  nn_integral :: 'a measure \<Rightarrow> ('a \<Rightarrow> ennreal) \<Rightarrow> ennreal
wenzelm@64390
  1849
wenzelm@64390
  1850
* Session HOL-Probability: Code generation and QuickCheck for
wenzelm@64390
  1851
Probability Mass Functions.
wenzelm@64390
  1852
wenzelm@64390
  1853
* Session HOL-Probability: theory Random_Permutations contains some
wenzelm@64390
  1854
theory about choosing a permutation of a set uniformly at random and
wenzelm@64390
  1855
folding over a list in random order.
wenzelm@64390
  1856
wenzelm@64390
  1857
* Session HOL-Probability: theory SPMF formalises discrete
wenzelm@64390
  1858
subprobability distributions.
wenzelm@64390
  1859
wenzelm@64390
  1860
* Session HOL-Library: the names of multiset theorems have been
wenzelm@64390
  1861
normalised to distinguish which ordering the theorems are about
wenzelm@64390
  1862
wenzelm@64390
  1863
    mset_less_eqI ~> mset_subset_eqI
wenzelm@64390
  1864
    mset_less_insertD ~> mset_subset_insertD
wenzelm@64390
  1865
    mset_less_eq_count ~> mset_subset_eq_count
wenzelm@64390
  1866
    mset_less_diff_self ~> mset_subset_diff_self
wenzelm@64390
  1867
    mset_le_exists_conv ~> mset_subset_eq_exists_conv
wenzelm@64390
  1868
    mset_le_mono_add_right_cancel ~> mset_subset_eq_mono_add_right_cancel
wenzelm@64390
  1869
    mset_le_mono_add_left_cancel ~> mset_subset_eq_mono_add_left_cancel
wenzelm@64390
  1870
    mset_le_mono_add ~> mset_subset_eq_mono_add
wenzelm@64390
  1871
    mset_le_add_left ~> mset_subset_eq_add_left
wenzelm@64390
  1872
    mset_le_add_right ~> mset_subset_eq_add_right
wenzelm@64390
  1873
    mset_le_single ~> mset_subset_eq_single
wenzelm@64390
  1874
    mset_le_multiset_union_diff_commute ~> mset_subset_eq_multiset_union_diff_commute
wenzelm@64390
  1875
    diff_le_self ~> diff_subset_eq_self
wenzelm@64390
  1876
    mset_leD ~> mset_subset_eqD
wenzelm@64390
  1877
    mset_lessD ~> mset_subsetD
wenzelm@64390
  1878
    mset_le_insertD ~> mset_subset_eq_insertD
wenzelm@64390
  1879
    mset_less_of_empty ~> mset_subset_of_empty
wenzelm@64390
  1880
    mset_less_size ~> mset_subset_size
wenzelm@64390
  1881
    wf_less_mset_rel ~> wf_subset_mset_rel
wenzelm@64390
  1882
    count_le_replicate_mset_le ~> count_le_replicate_mset_subset_eq
wenzelm@64390
  1883
    mset_remdups_le ~> mset_remdups_subset_eq
wenzelm@64390
  1884
    ms_lesseq_impl ~> subset_eq_mset_impl
wenzelm@64390
  1885
wenzelm@64390
  1886
Some functions have been renamed:
wenzelm@64390
  1887
    ms_lesseq_impl -> subset_eq_mset_impl
wenzelm@64390
  1888
wenzelm@64390
  1889
* HOL-Library: multisets are now ordered with the multiset ordering
wenzelm@64390
  1890
    #\<subseteq># ~> \<le>
wenzelm@64390
  1891
    #\<subset># ~> <
wenzelm@64390
  1892
    le_multiset ~> less_eq_multiset
wenzelm@64390
  1893
    less_multiset ~> le_multiset
wenzelm@64390
  1894
INCOMPATIBILITY.
wenzelm@64390
  1895
wenzelm@64390
  1896
* Session HOL-Library: the prefix multiset_order has been discontinued:
wenzelm@64390
  1897
the theorems can be directly accessed. As a consequence, the lemmas
wenzelm@64390
  1898
"order_multiset" and "linorder_multiset" have been discontinued, and the
wenzelm@64390
  1899
interpretations "multiset_linorder" and "multiset_wellorder" have been
wenzelm@64390
  1900
replaced by instantiations. INCOMPATIBILITY.
wenzelm@64390
  1901
wenzelm@64390
  1902
* Session HOL-Library: some theorems about the multiset ordering have
wenzelm@64390
  1903
been renamed:
wenzelm@64390
  1904
wenzelm@64390
  1905
    le_multiset_def ~> less_eq_multiset_def
wenzelm@64390
  1906
    less_multiset_def ~> le_multiset_def
wenzelm@64390
  1907
    less_eq_imp_le_multiset ~> subset_eq_imp_le_multiset
wenzelm@64390
  1908
    mult_less_not_refl ~> mset_le_not_refl
wenzelm@64390
  1909
    mult_less_trans ~> mset_le_trans
wenzelm@64390
  1910
    mult_less_not_sym ~> mset_le_not_sym
wenzelm@64390
  1911
    mult_less_asym ~> mset_le_asym
wenzelm@64390
  1912
    mult_less_irrefl ~> mset_le_irrefl
wenzelm@64390
  1913
    union_less_mono2{,1,2} ~> union_le_mono2{,1,2}
wenzelm@64390
  1914
wenzelm@64390
  1915
    le_multiset\<^sub>H\<^sub>O ~> less_eq_multiset\<^sub>H\<^sub>O
wenzelm@64390
  1916
    le_multiset_total ~> less_eq_multiset_total
wenzelm@64390
  1917
    less_multiset_right_total ~> subset_eq_imp_le_multiset
wenzelm@64390
  1918
    le_multiset_empty_left ~> less_eq_multiset_empty_left
wenzelm@64390
  1919
    le_multiset_empty_right ~> less_eq_multiset_empty_right
wenzelm@64390
  1920
    less_multiset_empty_right ~> le_multiset_empty_left
wenzelm@64390
  1921
    less_multiset_empty_left ~> le_multiset_empty_right
wenzelm@64390
  1922
    union_less_diff_plus ~> union_le_diff_plus
wenzelm@64390
  1923
    ex_gt_count_imp_less_multiset ~> ex_gt_count_imp_le_multiset
wenzelm@64390
  1924
    less_multiset_plus_left_nonempty ~> le_multiset_plus_left_nonempty
wenzelm@64390
  1925
    le_multiset_plus_right_nonempty ~> le_multiset_plus_right_nonempty
wenzelm@64390
  1926
INCOMPATIBILITY.
wenzelm@64390
  1927
wenzelm@64390
  1928
* Session HOL-Library: the lemma mset_map has now the attribute [simp].
wenzelm@64390
  1929
INCOMPATIBILITY.
wenzelm@64390
  1930
wenzelm@64390
  1931
* Session HOL-Library: some theorems about multisets have been removed.
wenzelm@64390
  1932
INCOMPATIBILITY, use the following replacements:
wenzelm@64390
  1933
wenzelm@64390
  1934
    le_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1935
    less_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1936
    le_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1937
    less_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1938
    add_eq_self_empty_iff ~> add_cancel_left_right
wenzelm@64390
  1939
    mset_subset_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1940
    mset_less_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1941
    mset_le_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1942
    empty_inter ~> subset_mset.inf_bot_left
wenzelm@64390
  1943
    inter_empty ~> subset_mset.inf_bot_right
wenzelm@64390
  1944
    empty_sup ~> subset_mset.sup_bot_left
wenzelm@64390
  1945
    sup_empty ~> subset_mset.sup_bot_right
wenzelm@64390
  1946
    bdd_below_multiset ~> subset_mset.bdd_above_bot
wenzelm@64390
  1947
    subset_eq_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1948
    le_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1949
    mset_subset_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1950
    mset_less_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1951
wenzelm@64390
  1952
* Session HOL-Library: some typeclass constraints about multisets have
wenzelm@64390
  1953
been reduced from ordered or linordered to preorder. Multisets have the
wenzelm@64390
  1954
additional typeclasses order_bot, no_top,
wenzelm@64390
  1955
ordered_ab_semigroup_add_imp_le, ordered_cancel_comm_monoid_add,
wenzelm@64390
  1956
linordered_cancel_ab_semigroup_add, and
wenzelm@64390
  1957
ordered_ab_semigroup_monoid_add_imp_le. INCOMPATIBILITY.
wenzelm@64390
  1958
wenzelm@64390
  1959
* Session HOL-Library: there are some new simplification rules about
wenzelm@64390
  1960
multisets, the multiset ordering, and the subset ordering on multisets.
wenzelm@64390
  1961
INCOMPATIBILITY.
wenzelm@64390
  1962
wenzelm@64390
  1963
* Session HOL-Library: the subset ordering on multisets has now the
wenzelm@64390
  1964
interpretations ordered_ab_semigroup_monoid_add_imp_le and
wenzelm@64390
  1965
bounded_lattice_bot. INCOMPATIBILITY.
wenzelm@64390
  1966
wenzelm@64390
  1967
* Session HOL-Library, theory Multiset: single has been removed in favor
wenzelm@64390
  1968
of add_mset that roughly corresponds to Set.insert. Some theorems have
wenzelm@64390
  1969
removed or changed:
wenzelm@64390
  1970
wenzelm@64390
  1971
  single_not_empty ~> add_mset_not_empty or empty_not_add_mset
wenzelm@64390
  1972
  fold_mset_insert ~> fold_mset_add_mset
wenzelm@64390
  1973
  image_mset_insert ~> image_mset_add_mset
wenzelm@64390
  1974
  union_single_eq_diff
wenzelm@64390
  1975
  multi_self_add_other_not_self
wenzelm@64390
  1976
  diff_single_eq_union
wenzelm@64390
  1977
INCOMPATIBILITY.
wenzelm@64390
  1978
wenzelm@64390
  1979
* Session HOL-Library, theory Multiset: some theorems have been changed
wenzelm@64390
  1980
to use add_mset instead of single:
wenzelm@64390
  1981
wenzelm@64390
  1982
  mset_add
wenzelm@64390
  1983
  multi_self_add_other_not_self
wenzelm@64390
  1984
  diff_single_eq_union
wenzelm@64390
  1985
  union_single_eq_diff
wenzelm@64390
  1986
  union_single_eq_member
wenzelm@64390
  1987
  add_eq_conv_diff
wenzelm@64390
  1988
  insert_noteq_member
wenzelm@64390
  1989
  add_eq_conv_ex
wenzelm@64390
  1990
  multi_member_split
wenzelm@64390
  1991
  multiset_add_sub_el_shuffle
wenzelm@64390
  1992
  mset_subset_eq_insertD
wenzelm@64390
  1993
  mset_subset_insertD
wenzelm@64390
  1994
  insert_subset_eq_iff
wenzelm@64390
  1995
  insert_union_subset_iff
wenzelm@64390
  1996
  multi_psub_of_add_self
wenzelm@64390
  1997
  inter_add_left1
wenzelm@64390
  1998
  inter_add_left2
wenzelm@64390
  1999
  inter_add_right1
wenzelm@64390
  2000
  inter_add_right2
wenzelm@64390
  2001
  sup_union_left1
wenzelm@64390
  2002
  sup_union_left2
wenzelm@64390
  2003
  sup_union_right1
wenzelm@64390
  2004
  sup_union_right2
wenzelm@64390
  2005
  size_eq_Suc_imp_eq_union
wenzelm@64390
  2006
  multi_nonempty_split
wenzelm@64390
  2007
  mset_insort
wenzelm@64390
  2008
  mset_update
wenzelm@64390
  2009
  mult1I
wenzelm@64390
  2010
  less_add
wenzelm@64390
  2011
  mset_zip_take_Cons_drop_twice
wenzelm@64390
  2012
  rel_mset_Zero
wenzelm@64390
  2013
  msed_map_invL
wenzelm@64390
  2014
  msed_map_invR
wenzelm@64390
  2015
  msed_rel_invL
wenzelm@64390
  2016
  msed_rel_invR
wenzelm@64390
  2017
  le_multiset_right_total
wenzelm@64390
  2018
  multiset_induct
wenzelm@64390
  2019
  multiset_induct2_size
wenzelm@64390
  2020
  multiset_induct2
wenzelm@64390
  2021
INCOMPATIBILITY.
wenzelm@64390
  2022
wenzelm@64390
  2023
* Session HOL-Library, theory Multiset: the definitions of some
wenzelm@64390
  2024
constants have changed to use add_mset instead of adding a single
wenzelm@64390
  2025
element:
wenzelm@64390
  2026
wenzelm@64390
  2027
  image_mset
wenzelm@64390
  2028
  mset
wenzelm@64390
  2029
  replicate_mset
wenzelm@64390
  2030
  mult1
wenzelm@64390
  2031
  pred_mset
wenzelm@64390
  2032
  rel_mset'
wenzelm@64390
  2033
  mset_insort
wenzelm@64390
  2034
wenzelm@64390
  2035
INCOMPATIBILITY.
wenzelm@64390
  2036
wenzelm@64390
  2037
* Session HOL-Library, theory Multiset: due to the above changes, the
wenzelm@64390
  2038
attributes of some multiset theorems have been changed:
wenzelm@64390
  2039
wenzelm@64390
  2040
  insert_DiffM  [] ~> [simp]
wenzelm@64390
  2041
  insert_DiffM2 [simp] ~> []
wenzelm@64390
  2042
  diff_add_mset_swap [simp]
wenzelm@64390
  2043
  fold_mset_add_mset [simp]
wenzelm@64390
  2044
  diff_diff_add [simp] (for multisets only)
wenzelm@64390
  2045
  diff_cancel [simp] ~> []
wenzelm@64390
  2046
  count_single [simp] ~> []
wenzelm@64390
  2047
  set_mset_single [simp] ~> []
wenzelm@64390
  2048
  size_multiset_single [simp] ~> []
wenzelm@64390
  2049
  size_single [simp] ~> []
wenzelm@64390
  2050
  image_mset_single [simp] ~> []
wenzelm@64390
  2051
  mset_subset_eq_mono_add_right_cancel [simp] ~> []
wenzelm@64390
  2052
  mset_subset_eq_mono_add_left_cancel [simp] ~> []
wenzelm@64390
  2053
  fold_mset_single [simp] ~> []
wenzelm@64390
  2054
  subset_eq_empty [simp] ~> []
wenzelm@64390
  2055
  empty_sup [simp] ~> []
wenzelm@64390
  2056
  sup_empty [simp] ~> []
wenzelm@64390
  2057
  inter_empty [simp] ~> []
wenzelm@64390
  2058
  empty_inter [simp] ~> []
wenzelm@64390
  2059
INCOMPATIBILITY.
wenzelm@64390
  2060
wenzelm@64391
  2061
* Session HOL-Library, theory Multiset: the order of the variables in
wenzelm@64390
  2062
the second cases of multiset_induct, multiset_induct2_size,
wenzelm@64390
  2063
multiset_induct2 has been changed (e.g. Add A a ~> Add a A).
wenzelm@64390
  2064
INCOMPATIBILITY.
wenzelm@64390
  2065
wenzelm@64390
  2066
* Session HOL-Library, theory Multiset: there is now a simplification
wenzelm@64390
  2067
procedure on multisets. It mimics the behavior of the procedure on
wenzelm@64390
  2068
natural numbers. INCOMPATIBILITY.
wenzelm@64390
  2069
wenzelm@64390
  2070
* Session HOL-Library, theory Multiset: renamed sums and products of
wenzelm@64390
  2071
multisets:
wenzelm@64390
  2072
wenzelm@64390
  2073
  msetsum ~> sum_mset
wenzelm@64390
  2074
  msetprod ~> prod_mset
wenzelm@64390
  2075
wenzelm@64390
  2076
* Session HOL-Library, theory Multiset: the notation for intersection
wenzelm@64390
  2077
and union of multisets have been changed:
wenzelm@64390
  2078
wenzelm@64390
  2079
  #\<inter> ~> \<inter>#
wenzelm@64390
  2080
  #\<union> ~> \<union>#
wenzelm@64390
  2081
wenzelm@64390
  2082
INCOMPATIBILITY.
wenzelm@64390
  2083
wenzelm@64390
  2084
* Session HOL-Library, theory Multiset: the lemma
wenzelm@64390
  2085
one_step_implies_mult_aux on multisets has been removed, use
wenzelm@64390
  2086
one_step_implies_mult instead. INCOMPATIBILITY.
wenzelm@64390
  2087
wenzelm@64390
  2088
* Session HOL-Library: theory Complete_Partial_Order2 provides reasoning
wenzelm@64390
  2089
support for monotonicity and continuity in chain-complete partial orders
wenzelm@64390
  2090
and about admissibility conditions for fixpoint inductions.
wenzelm@64390
  2091
haftmann@64523
  2092
* Session HOL-Library: theory Library/Polynomial contains also
haftmann@64523
  2093
derivation of polynomials (formerly in Library/Poly_Deriv) but not
haftmann@64523
  2094
gcd/lcm on polynomials over fields. This has been moved to a separate
haftmann@64523
  2095
theory Library/Polynomial_GCD_euclidean.thy, to pave way for a possible
haftmann@64523
  2096
future different type class instantiation for polynomials over factorial
haftmann@64523
  2097
rings. INCOMPATIBILITY.
wenzelm@64390
  2098
wenzelm@64390
  2099
* Session HOL-Library: theory Sublist provides function "prefixes" with
wenzelm@64390
  2100
the following renaming
wenzelm@64390
  2101
wenzelm@64390
  2102
  prefixeq -> prefix
wenzelm@64390
  2103
  prefix -> strict_prefix
wenzelm@64390
  2104
  suffixeq -> suffix
wenzelm@64390
  2105
  suffix -> strict_suffix
wenzelm@64390
  2106
wenzelm@64390
  2107
Added theory of longest common prefixes.
blanchet@64389
  2108
wenzelm@64391
  2109
* Session HOL-Number_Theory: algebraic foundation for primes:
wenzelm@64391
  2110
Generalisation of predicate "prime" and introduction of predicates
wenzelm@64391
  2111
"prime_elem", "irreducible", a "prime_factorization" function, and the
wenzelm@64391
  2112
"factorial_ring" typeclass with instance proofs for nat, int, poly. Some
wenzelm@64391
  2113
theorems now have different names, most notably "prime_def" is now
wenzelm@64391
  2114
"prime_nat_iff". INCOMPATIBILITY.
wenzelm@64391
  2115
wenzelm@64391
  2116
* Session Old_Number_Theory has been removed, after porting remaining
wenzelm@64391
  2117
theories.
wenzelm@64391
  2118
wenzelm@64551
  2119
* Session HOL-Types_To_Sets provides an experimental extension of
wenzelm@64551
  2120
Higher-Order Logic to allow translation of types to sets.
wenzelm@64551
  2121
wenzelm@63198
  2122
wenzelm@62498
  2123
*** ML ***
wenzelm@62498
  2124
wenzelm@63227
  2125
* Integer.gcd and Integer.lcm use efficient operations from the Poly/ML
wenzelm@63228
  2126
library (notably for big integers). Subtle change of semantics:
wenzelm@63228
  2127
Integer.gcd and Integer.lcm both normalize the sign, results are never
wenzelm@63228
  2128
negative. This coincides with the definitions in HOL/GCD.thy.
wenzelm@63228
  2129
INCOMPATIBILITY.
wenzelm@63227
  2130
wenzelm@63212
  2131
* Structure Rat for rational numbers is now an integral part of
wenzelm@63215
  2132
Isabelle/ML, with special notation @int/nat or @int for numerals (an
wenzelm@63215
  2133
abbreviation for antiquotation @{Pure.rat argument}) and ML pretty
wenzelm@63212
  2134
printing. Standard operations on type Rat.rat are provided via ad-hoc
wenzelm@63215
  2135
overloading of + - * / < <= > >= ~ abs. INCOMPATIBILITY, need to
wenzelm@63212
  2136
use + instead of +/ etc. Moreover, exception Rat.DIVZERO has been
wenzelm@63212
  2137
superseded by General.Div.
wenzelm@63198
  2138
wenzelm@64390
  2139
* ML antiquotation @{path} is superseded by @{file}, which ensures that
wenzelm@64390
  2140
the argument is a plain file. Minor INCOMPATIBILITY.
wenzelm@64390
  2141
wenzelm@64390
  2142
* Antiquotation @{make_string} is available during Pure bootstrap --
wenzelm@64390
  2143
with approximative output quality.
wenzelm@64390
  2144
wenzelm@64390
  2145
* Low-level ML system structures (like PolyML and RunCall) are no longer
wenzelm@64390
  2146
exposed to Isabelle/ML user-space. Potential INCOMPATIBILITY.
wenzelm@64390
  2147
wenzelm@62861
  2148
* The ML function "ML" provides easy access to run-time compilation.
wenzelm@62861
  2149
This is particularly useful for conditional compilation, without
wenzelm@62861
  2150
requiring separate files.
wenzelm@62861
  2151
wenzelm@62498
  2152
* Option ML_exception_debugger controls detailed exception trace via the
wenzelm@62498
  2153
Poly/ML debugger. Relevant ML modules need to be compiled beforehand
wenzelm@62498
  2154
with ML_file_debug, or with ML_file and option ML_debugger enabled. Note
wenzelm@62498
  2155
debugger information requires consirable time and space: main
wenzelm@62498
  2156
Isabelle/HOL with full debugger support may need ML_system_64.
wenzelm@62498
  2157
wenzelm@62514
  2158
* Local_Theory.restore has been renamed to Local_Theory.reset to
wenzelm@62514
  2159
emphasize its disruptive impact on the cumulative context, notably the
wenzelm@62514
  2160
scope of 'private' or 'qualified' names. Note that Local_Theory.reset is
wenzelm@62514
  2161
only appropriate when targets are managed, e.g. starting from a global
wenzelm@62514
  2162
theory and returning to it. Regular definitional packages should use
wenzelm@62514
  2163
balanced blocks of Local_Theory.open_target versus
wenzelm@62514
  2164
Local_Theory.close_target instead. Rare INCOMPATIBILITY.
wenzelm@62514
  2165
wenzelm@62519
  2166
* Structure TimeLimit (originally from the SML/NJ library) has been
wenzelm@62519
  2167
replaced by structure Timeout, with slightly different signature.
wenzelm@62519
  2168
INCOMPATIBILITY.
wenzelm@62519
  2169
wenzelm@62551
  2170
* Discontinued cd and pwd operations, which are not well-defined in a
wenzelm@62551
  2171
multi-threaded environment. Note that files are usually located
wenzelm@62551
  2172
relatively to the master directory of a theory (see also
wenzelm@62551
  2173
File.full_path). Potential INCOMPATIBILITY.
wenzelm@62551
  2174
wenzelm@63352
  2175
* Binding.empty_atts supersedes Thm.empty_binding and
wenzelm@63352
  2176
Attrib.empty_binding. Minor INCOMPATIBILITY.
wenzelm@63352
  2177
wenzelm@62498
  2178
wenzelm@62354
  2179
*** System ***
wenzelm@62354
  2180
wenzelm@64390
  2181
* SML/NJ and old versions of Poly/ML are no longer supported.
wenzelm@64390
  2182
wenzelm@64390
  2183
* Poly/ML heaps now follow the hierarchy of sessions, and thus require
wenzelm@64390
  2184
much less disk space.
wenzelm@63226
  2185
wenzelm@62591
  2186
* The Isabelle ML process is now managed directly by Isabelle/Scala, and
wenzelm@62591
  2187
shell scripts merely provide optional command-line access. In
wenzelm@62591
  2188
particular:
wenzelm@62591
  2189
wenzelm@62591
  2190
  . Scala module ML_Process to connect to the raw ML process,
wenzelm@62591
  2191
    with interaction via stdin/stdout/stderr or in batch mode;
wenzelm@62591
  2192
  . command-line tool "isabelle console" as interactive wrapper;
wenzelm@62591
  2193
  . command-line tool "isabelle process" as batch mode wrapper.
wenzelm@62588
  2194
wenzelm@62588
  2195
* The executable "isabelle_process" has been discontinued. Tools and
wenzelm@62588
  2196
prover front-ends should use ML_Process or Isabelle_Process in
wenzelm@62591
  2197
Isabelle/Scala. INCOMPATIBILITY.
wenzelm@62588
  2198
wenzelm@62588
  2199
* New command-line tool "isabelle process" supports ML evaluation of
wenzelm@62588
  2200
literal expressions (option -e) or files (option -f) in the context of a
wenzelm@62588
  2201
given heap image. Errors lead to premature exit of the ML process with
wenzelm@62588
  2202
return code 1.
wenzelm@62588
  2203
wenzelm@64390
  2204
* The command-line tool "isabelle build" supports option -N for cyclic
wenzelm@64390
  2205
shuffling of NUMA CPU nodes. This may help performance tuning on Linux
wenzelm@64390
  2206
servers with separate CPU/memory modules.
wenzelm@64390
  2207
wenzelm@64390
  2208
* System option "threads" (for the size of the Isabelle/ML thread farm)
wenzelm@64390
  2209
is also passed to the underlying ML runtime system as --gcthreads,
wenzelm@64274
  2210
unless there is already a default provided via ML_OPTIONS settings.
wenzelm@64274
  2211
wenzelm@63827
  2212
* System option "checkpoint" helps to fine-tune the global heap space
wenzelm@63827
  2213
management of isabelle build. This is relevant for big sessions that may
wenzelm@63827
  2214
exhaust the small 32-bit address space of the ML process (which is used
wenzelm@63827
  2215
by default).
wenzelm@63827
  2216
wenzelm@64308
  2217
* System option "profiling" specifies the mode for global ML profiling
wenzelm@64342
  2218
in "isabelle build". Possible values are "time", "allocations". The
wenzelm@64342
  2219
command-line tool "isabelle profiling_report" helps to digest the
wenzelm@64342
  2220
resulting log files.
wenzelm@64308
  2221
wenzelm@63986
  2222
* System option "ML_process_policy" specifies an optional command prefix
wenzelm@63986
  2223
for the underlying ML process, e.g. to control CPU affinity on
wenzelm@63987
  2224
multiprocessor systems. The "isabelle jedit" tool allows to override the
wenzelm@63987
  2225
implicit default via option -p.
wenzelm@63986
  2226
wenzelm@64390
  2227
* Command-line tool "isabelle console" provides option -r to help to
wenzelm@64390
  2228
bootstrapping Isabelle/Pure interactively.
wenzelm@64390
  2229
wenzelm@64390
  2230
* Command-line tool "isabelle yxml" has been discontinued.
wenzelm@64390
  2231
INCOMPATIBILITY, use operations from the modules "XML" and "YXML" in
wenzelm@64390
  2232
Isabelle/ML or Isabelle/Scala.
wenzelm@64390
  2233
wenzelm@64390
  2234
* Many Isabelle tools that require a Java runtime system refer to the
wenzelm@64390
  2235
settings ISABELLE_TOOL_JAVA_OPTIONS32 / ISABELLE_TOOL_JAVA_OPTIONS64,
wenzelm@64390
  2236
depending on the underlying platform. The settings for "isabelle build"
wenzelm@64390
  2237
ISABELLE_BUILD_JAVA_OPTIONS32 / ISABELLE_BUILD_JAVA_OPTIONS64 have been
wenzelm@64390
  2238
discontinued. Potential INCOMPATIBILITY.
wenzelm@64390
  2239
wenzelm@64390
  2240
* The Isabelle system environment always ensures that the main
wenzelm@64390
  2241
executables are found within the shell search $PATH: "isabelle" and
wenzelm@64390
  2242
"isabelle_scala_script".
wenzelm@64390
  2243
wenzelm@64390
  2244
* Isabelle tools may consist of .scala files: the Scala compiler is
wenzelm@64390
  2245
invoked on the spot. The source needs to define some object that extends
wenzelm@64390
  2246
Isabelle_Tool.Body.
wenzelm@64390
  2247
wenzelm@64390
  2248
* File.bash_string, File.bash_path etc. represent Isabelle/ML and
wenzelm@64390
  2249
Isabelle/Scala strings authentically within GNU bash. This is useful to
wenzelm@64390
  2250
produce robust shell scripts under program control, without worrying
wenzelm@64390
  2251
about spaces or special characters. Note that user output works via
wenzelm@64390
  2252
Path.print (ML) or Path.toString (Scala). INCOMPATIBILITY, the old (and
wenzelm@64390
  2253
less versatile) operations File.shell_quote, File.shell_path etc. have
wenzelm@64390
  2254
been discontinued.
wenzelm@64390
  2255
wenzelm@63995
  2256
* The isabelle_java executable allows to run a Java process within the
wenzelm@63995
  2257
name space of Java and Scala components that are bundled with Isabelle,
wenzelm@63995
  2258
but without the Isabelle settings environment.
wenzelm@63995
  2259
wenzelm@64390
  2260
* Isabelle/Scala: the SSH module supports ssh and sftp connections, for
wenzelm@64390
  2261
remote command-execution and file-system access. This resembles
wenzelm@64390
  2262
operations from module File and Isabelle_System to some extent. Note
wenzelm@64390
  2263
that Path specifications need to be resolved remotely via
wenzelm@64390
  2264
ssh.remote_path instead of File.standard_path: the implicit process
wenzelm@64390
  2265
environment is different, Isabelle settings are not available remotely.
wenzelm@64390
  2266
wenzelm@64390
  2267
* Isabelle/Scala: the Mercurial module supports repositories via the
wenzelm@64390
  2268
regular hg command-line interface. The repositroy clone and working
wenzelm@64390
  2269
directory may reside on a local or remote file-system (via ssh
wenzelm@64390
  2270
connection).
wenzelm@64265
  2271
wenzelm@62354
  2272
wenzelm@62354
  2273
wenzelm@62031
  2274
New in Isabelle2016 (February 2016)
wenzelm@62016
  2275
-----------------------------------
wenzelm@60138
  2276
wenzelm@61337
  2277
*** General ***
wenzelm@61337
  2278
wenzelm@62168
  2279
* Eisbach is now based on Pure instead of HOL. Objects-logics may import
wenzelm@62168
  2280
either the theory ~~/src/HOL/Eisbach/Eisbach (for HOL etc.) or
wenzelm@62168
  2281
~~/src/HOL/Eisbach/Eisbach_Old_Appl_Syntax (for FOL, ZF etc.). Note that
wenzelm@62168
  2282
the HOL-Eisbach session located in ~~/src/HOL/Eisbach/ contains further
wenzelm@62168
  2283
examples that do require HOL.
wenzelm@62168
  2284
wenzelm@62157
  2285
* Better resource usage on all platforms (Linux, Windows, Mac OS X) for
wenzelm@62157
  2286
both Isabelle/ML and Isabelle/Scala.  Slightly reduced heap space usage.
wenzelm@62157
  2287
wenzelm@62017
  2288
* Former "xsymbols" syntax with Isabelle symbols is used by default,
wenzelm@62017
  2289
without any special print mode. Important ASCII replacement syntax
wenzelm@62017
  2290
remains available under print mode "ASCII", but less important syntax
wenzelm@62017
  2291
has been removed (see below).
wenzelm@62017
  2292
wenzelm@62109
  2293
* Support for more arrow symbols, with rendering in LaTeX and Isabelle
wenzelm@62109
  2294
fonts: \<Lleftarrow> \<Rrightarrow> \<longlongleftarrow> \<longlongrightarrow> \<longlonglongleftarrow> \<longlonglongrightarrow>.
wenzelm@62017
  2295
wenzelm@62108
  2296
* Special notation \<struct> for the first implicit 'structure' in the
wenzelm@62108
  2297
context has been discontinued. Rare INCOMPATIBILITY, use explicit
wenzelm@62108
  2298
structure name instead, notably in indexed notation with block-subscript
wenzelm@62108
  2299
(e.g. \<odot>\<^bsub>A\<^esub>).
wenzelm@62108
  2300
wenzelm@62108
  2301
* The glyph for \<diamond> in the IsabelleText font now corresponds better to its
wenzelm@62108
  2302
counterpart \<box> as quantifier-like symbol. A small diamond is available as
wenzelm@62108
  2303
\<diamondop>; the old symbol \<struct> loses this rendering and any special
wenzelm@62108
  2304
meaning.
wenzelm@62108
  2305
wenzelm@62017
  2306
* Syntax for formal comments "-- text" now also supports the symbolic
wenzelm@62017
  2307
form "\<comment> text". Command-line tool "isabelle update_cartouches -c" helps
wenzelm@62017
  2308
to update old sources.
wenzelm@62017
  2309
wenzelm@61337
  2310
* Toplevel theorem statements have been simplified as follows:
wenzelm@61337
  2311
wenzelm@61337
  2312
  theorems             ~>  lemmas
wenzelm@61337
  2313
  schematic_lemma      ~>  schematic_goal
wenzelm@61337
  2314
  schematic_theorem    ~>  schematic_goal
wenzelm@61337
  2315
  schematic_corollary  ~>  schematic_goal
wenzelm@61337
  2316
wenzelm@61337
  2317
Command-line tool "isabelle update_theorems" updates theory sources
wenzelm@61337
  2318
accordingly.
wenzelm@61337
  2319
wenzelm@61338
  2320
* Toplevel theorem statement 'proposition' is another alias for
wenzelm@61338
  2321
'theorem'.
wenzelm@61338
  2322
wenzelm@62169
  2323
* The old 'defs' command has been removed (legacy since Isabelle2014).
wenzelm@62169
  2324
INCOMPATIBILITY, use regular 'definition' instead. Overloaded and/or
wenzelm@62169
  2325
deferred definitions require a surrounding 'overloading' block.
wenzelm@62169
  2326
wenzelm@61337
  2327
wenzelm@60610
  2328
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@60610
  2329
wenzelm@60986
  2330
* IDE support for the source-level debugger of Poly/ML, to work with
wenzelm@62253
  2331
Isabelle/ML and official Standard ML. Option "ML_debugger" and commands
wenzelm@62253
  2332
'ML_file_debug', 'ML_file_no_debug', 'SML_file_debug',
wenzelm@62253
  2333
'SML_file_no_debug' control compilation of sources with or without
wenzelm@62253
  2334
debugging information. The Debugger panel allows to set breakpoints (via
wenzelm@62253
  2335
context menu), step through stopped threads, evaluate local ML
wenzelm@62253
  2336
expressions etc. At least one Debugger view needs to be active to have
wenzelm@62253
  2337
any effect on the running ML program.
wenzelm@60984
  2338
wenzelm@61803
  2339
* The State panel manages explicit proof state output, with dynamic
wenzelm@61803
  2340
auto-update according to cursor movement. Alternatively, the jEdit
wenzelm@61803
  2341
action "isabelle.update-state" (shortcut S+ENTER) triggers manual
wenzelm@61803
  2342
update.
wenzelm@61729
  2343
wenzelm@61729
  2344
* The Output panel no longer shows proof state output by default, to
wenzelm@61729
  2345
avoid GUI overcrowding. INCOMPATIBILITY, use the State panel instead or
wenzelm@61729
  2346
enable option "editor_output_state".
wenzelm@61215
  2347
wenzelm@61803
  2348
* The text overview column (status of errors, warnings etc.) is updated
wenzelm@61803
  2349
asynchronously, leading to much better editor reactivity. Moreover, the
wenzelm@61803
  2350
full document node content is taken into account. The width of the
wenzelm@61803
  2351
column is scaled according to the main text area font, for improved
wenzelm@61803
  2352
visibility.
wenzelm@61803
  2353
wenzelm@61803
  2354
* The main text area no longer changes its color hue in outdated
wenzelm@61803
  2355
situations. The text overview column takes over the role to indicate
wenzelm@61803
  2356
unfinished edits in the PIDE pipeline. This avoids flashing text display
wenzelm@61803
  2357
due to ad-hoc updates by auxiliary GUI components, such as the State
wenzelm@61803
  2358
panel.
wenzelm@61803
  2359
wenzelm@62254
  2360
* Slightly improved scheduling for urgent print tasks (e.g. command
wenzelm@62254
  2361
state output, interactive queries) wrt. long-running background tasks.
wenzelm@62017
  2362
wenzelm@62017
  2363
* Completion of symbols via prefix of \<name> or \<^name> or \name is
wenzelm@62017
  2364
always possible, independently of the language context. It is never
wenzelm@62017
  2365
implicit: a popup will show up unconditionally.
wenzelm@62017
  2366
wenzelm@62017
  2367
* Additional abbreviations for syntactic completion may be specified in
wenzelm@62017
  2368
$ISABELLE_HOME/etc/abbrevs and $ISABELLE_HOME_USER/etc/abbrevs, with
wenzelm@62017
  2369
support for simple templates using ASCII 007 (bell) as placeholder.
wenzelm@62017
  2370
wenzelm@62234
  2371
* Symbols \<oplus>, \<Oplus>, \<otimes>, \<Otimes>, \<odot>, \<Odot>, \<ominus>, \<oslash> no longer provide abbreviations for
wenzelm@62234
  2372
completion like "+o", "*o", ".o" etc. -- due to conflicts with other
wenzelm@62234
  2373
ASCII syntax. INCOMPATIBILITY, use plain backslash-completion or define
wenzelm@62234
  2374
suitable abbreviations in $ISABELLE_HOME_USER/etc/abbrevs.
wenzelm@62234
  2375
wenzelm@61483
  2376
* Action "isabelle-emph" (with keyboard shortcut C+e LEFT) controls
wenzelm@61483
  2377
emphasized text style; the effect is visible in document output, not in
wenzelm@61483
  2378
the editor.
wenzelm@61483
  2379
wenzelm@61483
  2380
* Action "isabelle-reset" now uses keyboard shortcut C+e BACK_SPACE,
wenzelm@61483
  2381
instead of former C+e LEFT.
wenzelm@61483
  2382
wenzelm@61512
  2383
* The command-line tool "isabelle jedit" and the isabelle.Main
wenzelm@62027
  2384
application wrapper treat the default $USER_HOME/Scratch.thy more
wenzelm@61512
  2385
uniformly, and allow the dummy file argument ":" to open an empty buffer
wenzelm@61512
  2386
instead.
wenzelm@61512
  2387
wenzelm@62017
  2388
* New command-line tool "isabelle jedit_client" allows to connect to an
wenzelm@62017
  2389
already running Isabelle/jEdit process. This achieves the effect of
wenzelm@62017
  2390
single-instance applications seen on common GUI desktops.
wenzelm@62017
  2391
wenzelm@61529
  2392
* The default look-and-feel for Linux is the traditional "Metal", which
wenzelm@61529
  2393
works better with GUI scaling for very high-resolution displays (e.g.
wenzelm@61529
  2394
4K). Moreover, it is generally more robust than "Nimbus".
wenzelm@61529
  2395
wenzelm@62163
  2396
* Update to jedit-5.3.0, with improved GUI scaling and support of
wenzelm@62163
  2397
high-resolution displays (e.g. 4K).
wenzelm@62163
  2398
wenzelm@62034
  2399
* The main Isabelle executable is managed as single-instance Desktop
wenzelm@62034
  2400
application uniformly on all platforms: Linux, Windows, Mac OS X.
wenzelm@62034
  2401
wenzelm@60610
  2402
wenzelm@61405
  2403
*** Document preparation ***
wenzelm@61405
  2404
wenzelm@62017
  2405
* Commands 'paragraph' and 'subparagraph' provide additional section
wenzelm@62017
  2406
headings. Thus there are 6 levels of standard headings, as in HTML.
wenzelm@62017
  2407
wenzelm@62017
  2408
* Command 'text_raw' has been clarified: input text is processed as in
wenzelm@62017
  2409
'text' (with antiquotations and control symbols). The key difference is
wenzelm@62017
  2410
the lack of the surrounding isabelle markup environment in output.
wenzelm@62017
  2411
wenzelm@62017
  2412
* Text is structured in paragraphs and nested lists, using notation that
wenzelm@62017
  2413
is similar to Markdown. The control symbols for list items are as
wenzelm@62017
  2414
follows:
wenzelm@62017
  2415
wenzelm@62017
  2416
  \<^item>  itemize
wenzelm@62017
  2417
  \<^enum>  enumerate
wenzelm@62017
  2418
  \<^descr>  description
wenzelm@62017
  2419
wenzelm@61491
  2420
* There is a new short form for antiquotations with a single argument
wenzelm@61491
  2421
that is a cartouche: \<^name>\<open>...\<close> is equivalent to @{name \<open>...\<close>} and
wenzelm@61595
  2422
\<open>...\<close> without control symbol is equivalent to @{cartouche \<open>...\<close>}.
wenzelm@61595
  2423
\<^name> without following cartouche is equivalent to @{name}. The
wenzelm@61501
  2424
standard Isabelle fonts provide glyphs to render important control
wenzelm@61501
  2425
symbols, e.g. "\<^verbatim>", "\<^emph>", "\<^bold>".
wenzelm@61491
  2426
wenzelm@61595
  2427
* Antiquotations @{noindent}, @{smallskip}, @{medskip}, @{bigskip} with
wenzelm@61595
  2428
corresponding control symbols \<^noindent>, \<^smallskip>, \<^medskip>, \<^bigskip> specify spacing formally, using
wenzelm@61595
  2429
standard LaTeX macros of the same names.
wenzelm@61595
  2430
wenzelm@61491
  2431
* Antiquotation @{cartouche} in Isabelle/Pure is the same as @{text}.
wenzelm@61491
  2432
Consequently, \<open>...\<close> without any decoration prints literal quasi-formal
wenzelm@61492
  2433
text. Command-line tool "isabelle update_cartouches -t" helps to update
wenzelm@61492
  2434
old sources, by approximative patching of the content of string and
wenzelm@61492
  2435
cartouche tokens seen in theory sources.
wenzelm@61491
  2436
wenzelm@61491
  2437
* The @{text} antiquotation now ignores the antiquotation option
wenzelm@61491
  2438
"source". The given text content is output unconditionally, without any
wenzelm@61491
  2439
surrounding quotes etc. Subtle INCOMPATIBILITY, put quotes into the
wenzelm@61494
  2440
argument where they are really intended, e.g. @{text \<open>"foo"\<close>}. Initial
wenzelm@61494
  2441
or terminal spaces are ignored.
wenzelm@61491
  2442
wenzelm@62017
  2443
* Antiquotations @{emph} and @{bold} output LaTeX source recursively,
wenzelm@62017
  2444
adding appropriate text style markup. These may be used in the short
wenzelm@62017
  2445
form \<^emph>\<open>...\<close> and \<^bold>\<open>...\<close>.
wenzelm@62017
  2446
wenzelm@62017
  2447
* Document antiquotation @{footnote} outputs LaTeX source recursively,
wenzelm@62017
  2448
marked as \footnote{}. This may be used in the short form \<^footnote>\<open>...\<close>.
wenzelm@62017
  2449
wenzelm@62017
  2450
* Antiquotation @{verbatim [display]} supports option "indent".
wenzelm@62017
  2451
wenzelm@62017
  2452
* Antiquotation @{theory_text} prints uninterpreted theory source text
wenzelm@62231
  2453
(Isar outer syntax with command keywords etc.). This may be used in the
wenzelm@62231
  2454
short form \<^theory_text>\<open>...\<close>. @{theory_text [display]} supports option "indent".
wenzelm@62017
  2455
wenzelm@62017
  2456
* Antiquotation @{doc ENTRY} provides a reference to the given
wenzelm@62017
  2457
documentation, with a hyperlink in the Prover IDE.
wenzelm@62017
  2458
wenzelm@62017
  2459
* Antiquotations @{command}, @{method}, @{attribute} print checked
wenzelm@62017
  2460
entities of the Isar language.
wenzelm@62017
  2461
wenzelm@61471
  2462
* HTML presentation uses the standard IsabelleText font and Unicode
wenzelm@61471
  2463
rendering of Isabelle symbols like Isabelle/Scala/jEdit.  The former
wenzelm@61488
  2464
print mode "HTML" loses its special meaning.
wenzelm@61471
  2465
wenzelm@61405
  2466
wenzelm@60406
  2467
*** Isar ***
wenzelm@60406
  2468
wenzelm@62205
  2469
* Local goals ('have', 'show', 'hence', 'thus') allow structured rule
wenzelm@62205
  2470
statements like fixes/assumes/shows in theorem specifications, but the
wenzelm@62205
  2471
notation is postfix with keywords 'if' (or 'when') and 'for'. For
wenzelm@60555
  2472
example:
wenzelm@60414
  2473
wenzelm@60414
  2474
  have result: "C x y"
wenzelm@60414
  2475
    if "A x" and "B y"
wenzelm@60414
  2476
    for x :: 'a and y :: 'a
wenzelm@60414
  2477
    <proof>
wenzelm@60414
  2478
wenzelm@60449
  2479
The local assumptions are bound to the name "that". The result is
wenzelm@60449
  2480
exported from context of the statement as usual. The above roughly
wenzelm@60414
  2481
corresponds to a raw proof block like this:
wenzelm@60414
  2482
wenzelm@60414
  2483
  {
wenzelm@60414
  2484
    fix x :: 'a and y :: 'a
wenzelm@60449
  2485
    assume that: "A x" "B y"
wenzelm@60414
  2486
    have "C x y" <proof>
wenzelm@60414
  2487
  }
wenzelm@60414
  2488
  note result = this
wenzelm@60406
  2489
wenzelm@60555
  2490
The keyword 'when' may be used instead of 'if', to indicate 'presume'
wenzelm@60555
  2491
instead of 'assume' above.
wenzelm@60555
  2492
wenzelm@61733
  2493
* Assumptions ('assume', 'presume') allow structured rule statements
wenzelm@61733
  2494
using 'if' and 'for', similar to 'have' etc. above. For example:
wenzelm@61658
  2495
wenzelm@61658
  2496
  assume result: "C x y"
wenzelm@61658
  2497
    if "A x" and "B y"
wenzelm@61658
  2498
    for x :: 'a and y :: 'a
wenzelm@61658
  2499
wenzelm@61658
  2500
This assumes "\<And>x y::'a. A x \<Longrightarrow> B y \<Longrightarrow> C x y" and produces a general
wenzelm@61658
  2501
result as usual: "A ?x \<Longrightarrow> B ?y \<Longrightarrow> C ?x ?y".
wenzelm@61658
  2502
wenzelm@61658
  2503
Vacuous quantification in assumptions is omitted, i.e. a for-context
wenzelm@61658
  2504
only effects propositions according to actual use of variables. For
wenzelm@61658
  2505
example:
wenzelm@61658
  2506
wenzelm@61658
  2507
  assume "A x" and "B y" for x and y
wenzelm@61658
  2508
wenzelm@61658
  2509
is equivalent to:
wenzelm@61658
  2510
wenzelm@61658
  2511
  assume "\<And>x. A x" and "\<And>y. B y"
wenzelm@61658
  2512
wenzelm@60595
  2513
* The meaning of 'show' with Pure rule statements has changed: premises
wenzelm@60595
  2514
are treated in the sense of 'assume', instead of 'presume'. This means,
wenzelm@62205
  2515
a goal like "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x" can be solved completely as
wenzelm@62205
  2516
follows:
wenzelm@60595
  2517
wenzelm@60595
  2518
  show "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60595
  2519
wenzelm@60595
  2520
or:
wenzelm@60595
  2521
wenzelm@60595
  2522
  show "C x" if "A x" "B x" for x
wenzelm@60595
  2523
wenzelm@60595
  2524
Rare INCOMPATIBILITY, the old behaviour may be recovered as follows:
wenzelm@60595
  2525
wenzelm@60595
  2526
  show "C x" when "A x" "B x" for x
wenzelm@60595
  2527
wenzelm@60459
  2528
* New command 'consider' states rules for generalized elimination and
wenzelm@60459
  2529
case splitting. This is like a toplevel statement "theorem obtains" used
wenzelm@60459
  2530
within a proof body; or like a multi-branch 'obtain' without activation
wenzelm@60459
  2531
of the local context elements yet.
wenzelm@60459
  2532
wenzelm@60455
  2533
* Proof method "cases" allows to specify the rule as first entry of
wenzelm@60455
  2534
chained facts.  This is particularly useful with 'consider':
wenzelm@60455
  2535
wenzelm@60455
  2536
  consider (a) A | (b) B | (c) C <proof>
wenzelm@60455
  2537
  then have something
wenzelm@60455
  2538
  proof cases
wenzelm@60455
  2539
    case a
wenzelm@60455
  2540
    then show ?thesis <proof>
wenzelm@60455
  2541
  next
wenzelm@60455
  2542
    case b
wenzelm@60455
  2543
    then show ?thesis <proof>
wenzelm@60455
  2544
  next
wenzelm@60455
  2545
    case c
wenzelm@60455
  2546
    then show ?thesis <proof>
wenzelm@60455
  2547
  qed
wenzelm@60455
  2548
wenzelm@60565
  2549
* Command 'case' allows fact name and attribute specification like this:
wenzelm@60565
  2550
wenzelm@60565
  2551
  case a: (c xs)
wenzelm@60565
  2552
  case a [attributes]: (c xs)
wenzelm@60565
  2553
wenzelm@60565
  2554
Facts that are introduced by invoking the case context are uniformly
wenzelm@60565
  2555
qualified by "a"; the same name is used for the cumulative fact. The old
wenzelm@60565
  2556
form "case (c xs) [attributes]" is no longer supported. Rare
wenzelm@60565
  2557
INCOMPATIBILITY, need to adapt uses of case facts in exotic situations,
wenzelm@60565
  2558
and always put attributes in front.
wenzelm@60565
  2559
wenzelm@60618
  2560
* The standard proof method of commands 'proof' and '..' is now called
wenzelm@60618
  2561
"standard" to make semantically clear what it is; the old name "default"
wenzelm@60618
  2562
is still available as legacy for some time. Documentation now explains
wenzelm@60618
  2563
'..' more accurately as "by standard" instead of "by rule".
wenzelm@60618
  2564
wenzelm@62017
  2565
* Nesting of Isar goal structure has been clarified: the context after
wenzelm@62017
  2566
the initial backwards refinement is retained for the whole proof, within
wenzelm@62017
  2567
all its context sections (as indicated via 'next'). This is e.g.
wenzelm@62017
  2568
relevant for 'using', 'including', 'supply':
wenzelm@62017
  2569
wenzelm@62017
  2570
  have "A \<and> A" if a: A for A
wenzelm@62017
  2571
    supply [simp] = a
wenzelm@62017
  2572
  proof
wenzelm@62017
  2573
    show A by simp
wenzelm@62017
  2574
  next
wenzelm@62017
  2575
    show A by simp
wenzelm@62017
  2576
  qed
wenzelm@62017
  2577
wenzelm@62017
  2578
* Command 'obtain' binds term abbreviations (via 'is' patterns) in the
wenzelm@62017
  2579
proof body as well, abstracted over relevant parameters.
wenzelm@62017
  2580
wenzelm@62017
  2581
* Improved type-inference for theorem statement 'obtains': separate
wenzelm@62017
  2582
parameter scope for of each clause.
wenzelm@62017
  2583
wenzelm@62017
  2584
* Term abbreviations via 'is' patterns also work for schematic
wenzelm@62017
  2585
statements: result is abstracted over unknowns.
wenzelm@62017
  2586
wenzelm@60631
  2587
* Command 'subgoal' allows to impose some structure on backward
wenzelm@60631
  2588
refinements, to avoid proof scripts degenerating into long of 'apply'
wenzelm@60631
  2589
sequences. Further explanations and examples are given in the isar-ref
wenzelm@60631
  2590
manual.
wenzelm@60631
  2591
wenzelm@62017
  2592
* Command 'supply' supports fact definitions during goal refinement
wenzelm@62017
  2593
('apply' scripts).
wenzelm@62017
  2594
wenzelm@61166
  2595
* Proof method "goal_cases" turns the current subgoals into cases within
wenzelm@61166
  2596
the context; the conclusion is bound to variable ?case in each case. For
wenzelm@61166
  2597
example:
wenzelm@60617
  2598
wenzelm@60617
  2599
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2600
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2601
proof goal_cases
wenzelm@60622
  2602
  case (1 x)
wenzelm@60622
  2603
  then show ?case using \<open>A x\<close> \<open>B x\<close> sorry
wenzelm@60622
  2604
next
wenzelm@60622
  2605
  case (2 y z)
wenzelm@60622
  2606
  then show ?case using \<open>U y\<close> \<open>V z\<close> sorry
wenzelm@60622
  2607
qed
wenzelm@60622
  2608
wenzelm@60622
  2609
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2610
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2611
proof goal_cases
wenzelm@60617
  2612
  case prems: 1
wenzelm@60617
  2613
  then show ?case using prems sorry
wenzelm@60617
  2614
next
wenzelm@60617
  2615
  case prems: 2
wenzelm@60617
  2616
  then show ?case using prems sorry
wenzelm@60617
  2617
qed
wenzelm@60578
  2618
wenzelm@60581
  2619
* The undocumented feature of implicit cases goal1, goal2, goal3, etc.
wenzelm@60617
  2620
is marked as legacy, and will be removed eventually. The proof method
wenzelm@60617
  2621
"goals" achieves a similar effect within regular Isar; often it can be
wenzelm@60617
  2622
done more adequately by other means (e.g. 'consider').
wenzelm@60581
  2623
wenzelm@62017
  2624
* The vacuous fact "TERM x" may be established "by fact" or as `TERM x`
wenzelm@62017
  2625
as well, not just "by this" or "." as before.
wenzelm@60551
  2626
wenzelm@60554
  2627
* Method "sleep" succeeds after a real-time delay (in seconds). This is
wenzelm@60554
  2628
occasionally useful for demonstration and testing purposes.
wenzelm@60554
  2629
wenzelm@60406
  2630
wenzelm@60331
  2631
*** Pure ***
wenzelm@60331
  2632
wenzelm@61606
  2633
* Qualifiers in locale expressions default to mandatory ('!') regardless
wenzelm@61606
  2634
of the command. Previously, for 'locale' and 'sublocale' the default was
wenzelm@61606
  2635
optional ('?'). The old synatx '!' has been discontinued.
wenzelm@61606
  2636
INCOMPATIBILITY, remove '!' and add '?' as required.
ballarin@61565
  2637
ballarin@61566
  2638
* Keyword 'rewrites' identifies rewrite morphisms in interpretation
wenzelm@62017
  2639
commands. Previously, the keyword was 'where'. INCOMPATIBILITY.
ballarin@61566
  2640
ballarin@61701
  2641
* More gentle suppression of syntax along locale morphisms while
wenzelm@62017
  2642
printing terms. Previously 'abbreviation' and 'notation' declarations
wenzelm@62017
  2643
would be suppressed for morphisms except term identity. Now
ballarin@61701
  2644
'abbreviation' is also kept for morphims that only change the involved
wenzelm@62017
  2645
parameters, and only 'notation' is suppressed. This can be of great help
wenzelm@62017
  2646
when working with complex locale hierarchies, because proof states are
wenzelm@62017
  2647
displayed much more succinctly. It also means that only notation needs
wenzelm@62017
  2648
to be redeclared if desired, as illustrated by this example:
ballarin@61701
  2649
ballarin@61701
  2650
  locale struct = fixes composition :: "'a => 'a => 'a" (infixl "\<cdot>" 65)
ballarin@61701
  2651
  begin
ballarin@61701
  2652
    definition derived (infixl "\<odot>" 65) where ...
ballarin@61701
  2653
  end
ballarin@61701
  2654
ballarin@61701
  2655
  locale morphism =
ballarin@61701
  2656
    left: struct composition + right: struct composition'
ballarin@61701
  2657
    for composition (infix "\<cdot>" 65) and composition' (infix "\<cdot>''" 65)
ballarin@61701
  2658
  begin
ballarin@61701
  2659
    notation right.derived ("\<odot>''")
ballarin@61701
  2660
  end
ballarin@61701
  2661
wenzelm@61895
  2662
* Command 'global_interpretation' issues interpretations into global
wenzelm@61895
  2663
theories, with optional rewrite definitions following keyword 'defines'.
wenzelm@61895
  2664
wenzelm@61895
  2665
* Command 'sublocale' accepts optional rewrite definitions after keyword
haftmann@61675
  2666
'defines'.
haftmann@61675
  2667
wenzelm@61895
  2668
* Command 'permanent_interpretation' has been discontinued. Use
wenzelm@61895
  2669
'global_interpretation' or 'sublocale' instead. INCOMPATIBILITY.
haftmann@61670
  2670
wenzelm@61252
  2671
* Command 'print_definitions' prints dependencies of definitional
wenzelm@61252
  2672
specifications. This functionality used to be part of 'print_theory'.
wenzelm@61252
  2673
wenzelm@60331
  2674
* Configuration option rule_insts_schematic has been discontinued
wenzelm@62017
  2675
(intermediate legacy feature in Isabelle2015). INCOMPATIBILITY.
wenzelm@60331
  2676
wenzelm@62205
  2677
* Abbreviations in type classes now carry proper sort constraint. Rare
wenzelm@62205
  2678
INCOMPATIBILITY in situations where the previous misbehaviour has been
wenzelm@62205
  2679
exploited.
haftmann@60347
  2680
haftmann@60347
  2681
* Refinement of user-space type system in type classes: pseudo-local
wenzelm@62205
  2682
operations behave more similar to abbreviations. Potential
haftmann@60347
  2683
INCOMPATIBILITY in exotic situations.
haftmann@60347
  2684
haftmann@60347
  2685
nipkow@60171
  2686
*** HOL ***
nipkow@60171
  2687
wenzelm@62017
  2688
* The 'typedef' command has been upgraded from a partially checked
wenzelm@62017
  2689
"axiomatization", to a full definitional specification that takes the
wenzelm@62017
  2690
global collection of overloaded constant / type definitions into
wenzelm@62017
  2691
account. Type definitions with open dependencies on overloaded
wenzelm@62017
  2692
definitions need to be specified as "typedef (overloaded)". This
wenzelm@62017
  2693
provides extra robustness in theory construction. Rare INCOMPATIBILITY.
wenzelm@62017
  2694
wenzelm@62017
  2695
* Qualification of various formal entities in the libraries is done more
wenzelm@62017
  2696
uniformly via "context begin qualified definition ... end" instead of