add command timings (like document command status);

tuned signature;

public Isabelle_Process.xml_cache (thread-safe); cache derived status messages;

tuned signature;

just one timing protocol function, with 3 implementations: TTY/PG, PIDE/document, build;

clarified protocol_message undefinedness;

quote by Alan Kay;

more accurate documentation;

discontinued Toplevel.no_timing complication -- also recovers timing of diagnostic commands, e.g. 'find_theorems'; print timing as tracing, to keep it out of the way in Proof General; no timing of control commands, especially relevant for Proof General;

more accurate documentation of "(structure)" mixfix;

more robust static structure reference, avoid dynamic Proof_Context.intern_skolem in Syntax_Phases.decode_term;

tuned comment;

just one syntax category "mixfix" -- check structure annotation semantically;

tuned message;

handle case clashes on Mac file system by encoding goal numbers

avoid duplicate "tcon_" names

smoothly handle cyclic graphs

compile + fixed naming convention

reverted accidental changes to theory file + updated wrt ML file

no need to filter tautologies anymore -- they are prefiltered by "all_facts"'

work on CASC LTB ISA exporter

tuning

add continuous_on rules for products

fixed spelling

move FrechetDeriv from the Library to HOL/Deriv; base DERIV on FDERIV and both derivatives allow a restricted support set; FDERIV is now an abbreviation of has_derivative

remove the within-filter, replace "at" by "at _ within UNIV" (This allows to remove a couple of redundant lemmas)

improved printing of exception CTERM (see also d0f0f37ec346);

prefer pretty_exn where possible -- NB: low-level General.exnMessage may still be used elsewhere (e.g. by the ML compiler itself);

more defensive representation of forced break within PolyML.PrettyBreak -- avoid accidental blowup if low-level operations are used, notably PolyML.makestring or its variant General.exnMessage;

discontinued odd magic number, which was once used for performance measurements;