/usr/share/medit-1/language-specs/forth.lang is in medit 1.0.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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<!--
This file is part of GtkSourceView
Author: Jens-Hanno Schwalm <hanno@schwalm-bremen.de>
Copyright (C) 2007 Jens-Hanno Schwalm; <hanno@schwalm-bremen.de>
GtkSourceView is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
GtkSourceView is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-->
<language id="forth" _name="Forth" version="2.0" _section="Sources">
<metadata>
<property name="mimetypes">text/x-forth</property>
<property name="globs">*.frt;*.fs</property>
<property name="line-comment-start">\</property>
<property name="block-comment-start">(*</property>
<property name="block-comment-end">*)</property>
</metadata>
<styles>
<style id="comment" _name="Comment" map-to="def:comment"/>
<style id="string" _name="String" map-to="def:string"/>
<style id="preprocessor" _name="Preprocessor" map-to="def:preprocessor"/>
<style id="keyword" _name="Keyword" map-to="def:statement"/>
<style id="type" _name="Data Type" map-to="def:type"/>
<style id="number" _name="Number" map-to="def:decimal"/>
<style id="debugs" _name="Debug Code" map-to="def:comment"/>
<style id="error" _name="Error Text" map-to="def:error"/>
<style id="compiler" _name="Compiler Directive" map-to="def:identifier"/>
</styles>
<default-regex-options case-sensitive="false"/>
<definitions>
<context id="forth" class="no-spell-check">
<include>
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<include>
<context ref="def:in-line-comment"/>
</include>
</context>
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<end>\)</end>
<include>
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<end>\*\)(?![^\s])</end>
<include>
<context ref="def:in-comment"/>
</include>
</context>
<!-- multiline comment DOC ... ENDDOC -->
<context id="comment-multiline3" style-ref="comment" class="comment" class-disabled="no-spell-check">
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<include>
<context ref="def:in-comment"/>
</include>
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(?<![^\s])
(NEEDS|INCLUDE|IN|MARKER)\s+[^\s]*
(?![^\s])
</match>
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<match extended="true">
(?<![^\s])
(REVISION)\s+[^\s]*\s*".*"
(?![^\s])
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<context id="preproc3" style-ref="preprocessor">
<match extended="true">
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(INCLUDED|INCLUDE-FILE)
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(?![^\s])
</match>
</context>
<!-- the grouped local words like LOCALS| read words until a last | -->
<context id="locals" style-ref="type">
<match extended="true">
(?<![^\s])
([DFZ]?LOCALS)\|\s+[^\|]+[\|]
(?![^\s])
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<!-- strings ended by a " S" ." EVAL" C" Z" -->
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([$][-+]?[A-F0-9.]+ |
[#][-+]?[0-9.]+ |
[%][-+]?[0-1.]+ |
[-+]?[0-9.]+ |
[-+]?[0-9]+[.]?[0-9]*[eE][0-9]* |
'[^\s]' |
[\^][A-Za-z] |
TRUE |
FALSE)
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<context id="keywords" style-ref="keyword">
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(\[IF\]|\[ELSE\]|\[THEN\]|\[DEFINED\]|\[UNDEFINED\]|\?DEF|\?UNDEF|THROW|CASE|ENDCASE|OF|ENDOF|FOR|NEXT|
IF[,]?|ELSE[,]?|THEN[,]?|ENDIF[,]?|BEGIN[,]?|WHILE[,]?|REPEAT[,]?|UNTIL[,]?|AGAIN[,]?|DO|LOOP|\?DO|\+LOOP|LEAVE|\?LEAVE|UNLOOP|EXIT|\?EXIT|
PAR|ENDPAR|STARTP|ENDP)
(?![^\s])
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<context id="keywords2" style-ref="compiler">
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(PRIVATE|PRIVATES|DEPRIVE|FORGET|IMMEDIATE|ALSO|ONLY|FORTH|DEFINITIONS|HEADERLESS)
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<include>
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<context ref="number"/>
<context ref="comment"/>
<context ref="comment-multiline"/>
</include>
</context>
</include>
</context>
</definitions>
</language>
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