author  wenzelm 
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parent 67462  c23d9375e661 
child 71899  9a12eb655f67 
permissions  rwrr 
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(* Title: Pure/Thy/latex.ML 
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Author: Markus Wenzel, TU Muenchen 
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15801  4 
LaTeX presentation elements  based on outer lexical syntax. 
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*) 
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signature LATEX = 
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sig 
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type text 
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val string: string > text 
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val text: string * Position.T > text 
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val block: text list > text 
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val enclose_body: string > string > text list > text list 
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val enclose_block: string > string > text list > text 
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val output_text: text list > string 
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val output_positions: Position.T > text list > string 
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val output_name: string > string 
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val output_ascii: string > string 
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val output_symbols: Symbol.symbol list > string 
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val output_syms: string > string 
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val symbols: Symbol_Pos.T list > text 
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val symbols_output: Symbol_Pos.T list > text 

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val begin_delim: string > string 
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val end_delim: string > string 

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val begin_tag: string > string 

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val end_tag: string > string 

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val environment_block: string > text list > text 
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val environment: string > string > string 
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val isabelle_body: string > text list > text list 
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val theory_entry: string > string 
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val latexN: string 
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val latex_output: string > string * int 
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val latex_markup: string * Properties.T > Markup.output 
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val latex_indent: string > int > string 
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end; 
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structure Latex: LATEX = 
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struct 
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(* text with positions *) 
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abstype text = Text of string * Position.T  Block of text list 
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with 
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fun string s = Text (s, Position.none); 
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val text = Text; 
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val block = Block; 
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fun output_text texts = 
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let 
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fun output (Text (s, _)) = Buffer.add s 
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 output (Block body) = fold output body; 
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in Buffer.empty > fold output texts > Buffer.content end; 
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fun output_positions file_pos texts = 
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let 
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fun position (a, b) = enclose "%:%" "%:%" (a ^ "=" ^ b); 
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fun add_position p positions = 
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let val s = position (apply2 Value.print_int p) 

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in positions > s <> hd positions ? cons s end; 

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fun output (Text (s, pos)) (positions, line) = 
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let 
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val positions' = 
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(case Position.line_of pos of 
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NONE => positions 
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 SOME l => add_position (line, l) positions); 
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val line' = fold_string (fn c => fn n => if c = "\n" then n + 1 else n) s line; 
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in (positions', line') end 
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 output (Block body) res = fold output body res; 
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in 
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(case Position.file_of file_pos of 
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NONE => "" 
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 SOME file => 
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([position (Markup.fileN, file), "\\endinput"], 1) 
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> fold output texts > #1 > rev > cat_lines) 
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end; 
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end; 
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fun enclose_body bg en body = 
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(if bg = "" then [] else [string bg]) @ body @ 

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(if en = "" then [] else [string en]); 

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fun enclose_block bg en = block o enclose_body bg en; 
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(* output name for LaTeX macros *) 
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val output_name = 

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translate_string 

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(fn "_" => "UNDERSCORE" 

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 "'" => "PRIME" 

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 "0" => "ZERO" 

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 "1" => "ONE" 

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 "2" => "TWO" 

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 "3" => "THREE" 

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 "4" => "FOUR" 

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 "5" => "FIVE" 

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 "6" => "SIX" 

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 "7" => "SEVEN" 

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 "8" => "EIGHT" 

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 "9" => "NINE" 

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 s => s); 

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fun enclose_name bg en = enclose bg en o output_name; 

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(* output verbatim ASCII *) 
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val output_ascii = 
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translate_string 
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(fn " " => "\\ " 
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 "\t" => "\\ " 
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 "\n" => "\\isanewline\n" 
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 s => 
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if exists_string (fn s' => s = s') "\"#$%&',<>\\^_`{}~" 
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then enclose "{\\char`\\" "}" s else s); 
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(* output symbols *) 
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local 
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val char_table = 
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Symtab.make 
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[("\007", "{\\isacharbell}"), 
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("!", "{\\isacharbang}"), 
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("\"", "{\\isachardoublequote}"), 
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("#", "{\\isacharhash}"), 
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("$", "{\\isachardollar}"), 
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("%", "{\\isacharpercent}"), 
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("&", "{\\isacharampersand}"), 
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("'", "{\\isacharprime}"), 
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("(", "{\\isacharparenleft}"), 
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(")", "{\\isacharparenright}"), 
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("*", "{\\isacharasterisk}"), 
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("+", "{\\isacharplus}"), 
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(",", "{\\isacharcomma}"), 
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("", "{\\isacharminus}"), 
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(".", "{\\isachardot}"), 
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("/", "{\\isacharslash}"), 
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(":", "{\\isacharcolon}"), 
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(";", "{\\isacharsemicolon}"), 
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("<", "{\\isacharless}"), 
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("=", "{\\isacharequal}"), 
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(">", "{\\isachargreater}"), 
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("?", "{\\isacharquery}"), 
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("@", "{\\isacharat}"), 
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("[", "{\\isacharbrackleft}"), 
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("\\", "{\\isacharbackslash}"), 
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("]", "{\\isacharbrackright}"), 
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("^", "{\\isacharcircum}"), 
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("_", "{\\isacharunderscore}"), 
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("`", "{\\isacharbackquote}"), 
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("{", "{\\isacharbraceleft}"), 
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("", "{\\isacharbar}"), 
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("}", "{\\isacharbraceright}"), 
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("~", "{\\isachartilde}")]; 
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fun output_chr " " = "\\ " 
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 output_chr "\t" = "\\ " 
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 output_chr "\n" = "\\isanewline\n" 
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 output_chr c = 
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(case Symtab.lookup char_table c of 
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SOME s => s 
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 NONE => if Symbol.is_ascii_digit c then enclose "{\\isadigit{" "}}" c else c); 
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fun output_sym sym = 
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(case Symbol.decode sym of 
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Symbol.Char s => output_chr s 

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 Symbol.UTF8 s => s 
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 Symbol.Sym s => enclose_name "{\\isasym" "}" s 
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 Symbol.Control s => enclose_name "\\isactrl" " " s 

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 Symbol.Malformed s => error (Symbol.malformed_msg s) 
176 
 Symbol.EOF => error "Bad EOF symbol"); 

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open Basic_Symbol_Pos; 
179 

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val scan_latex_length = 
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Scan.many1 (fn (s, _) => s <> Symbol.latex andalso Symbol.not_eof s) 
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>> (Symbol.length o map Symbol_Pos.symbol)  
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$$ Symbol.latex  Scan.option (Scan.permissive Symbol_Pos.scan_cartouche "") >> K 0; 
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val scan_latex = 
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$$ Symbol.latex  Symbol_Pos.scan_cartouche_content "Embedded LaTeX: " 
187 
>> (implode o map Symbol_Pos.symbol)  

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Scan.one (Symbol.not_eof o Symbol_Pos.symbol) >> (output_sym o Symbol_Pos.symbol); 
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fun read scan syms = 
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Scan.read Symbol_Pos.stopper (Scan.repeat scan) (map (rpair Position.none) syms); 
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7900  193 
in 
194 

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fun length_symbols syms = 
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fold Integer.add (these (read scan_latex_length syms)) 0; 
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fun output_symbols syms = 
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if member (op =) syms Symbol.latex then 
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(case read scan_latex syms of 
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SOME ss => implode ss 
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 NONE => error ("Malformed embedded LaTeX: " ^ quote (Symbol.beginning 10 syms))) 
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else implode (map output_sym syms); 
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val output_syms = output_symbols o Symbol.explode; 
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207 
end; 

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fun symbols syms = text (Symbol_Pos.content syms, #1 (Symbol_Pos.range syms)); 
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fun symbols_output syms = 

211 
text (output_symbols (map Symbol_Pos.symbol syms), #1 (Symbol_Pos.range syms)); 

212 

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(* tags *) 
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val begin_delim = enclose_name "%\n\\isadelim" "\n"; 
217 
val end_delim = enclose_name "%\n\\endisadelim" "\n"; 

218 
val begin_tag = enclose_name "%\n\\isatag" "\n"; 

219 
fun end_tag tg = enclose_name "%\n\\endisatag" "\n" tg ^ enclose "{\\isafold" "}%\n" tg; 

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221 

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(* theory presentation *) 
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fun environment_delim name = 
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("%\n\\begin{" ^ output_name name ^ "}%\n", 
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"%\n\\end{" ^ output_name name ^ "}"); 
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fun environment_block name = environment_delim name > enclose_body #> block; 
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fun environment name = environment_delim name > enclose; 
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fun isabelle_body name = 
232 
enclose_body 

233 
("%\n\\begin{isabellebody}%\n\\setisabellecontext{" ^ output_syms name ^ "}%\n") 

234 
"%\n\\end{isabellebody}%\n"; 

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fun theory_entry name = "\\input{" ^ name ^ ".tex}\n\n"; 
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(* print mode *) 
240 

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val latexN = "latex"; 
242 

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fun latex_output str = 
244 
let val syms = Symbol.explode str 

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in (output_symbols syms, length_symbols syms) end; 
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fun latex_markup (s, _: Properties.T) = 
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if s = Markup.commandN orelse s = Markup.keyword1N orelse s = Markup.keyword3N 
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then ("\\isacommand{", "}") 
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else if s = Markup.keyword2N 
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then ("\\isakeyword{", "}") 
29325  252 
else Markup.no_output; 
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fun latex_indent "" _ = "" 
255 
 latex_indent s _ = enclose "\\isaindent{" "}" s; 

256 

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val _ = Output.add_mode latexN latex_output (prefix Symbol.latex o cartouche); 
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val _ = Markup.add_mode latexN latex_markup; 
259 
val _ = Pretty.add_mode latexN latex_indent; 

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end; 