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Version 2 (modified by trac, 16 years ago) (diff)
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Syntax Coloring of Source Code

Trac supports language-specific syntax highlighting of source code within wiki formatted text in wiki processors blocks and in the repository browser.

To do this, Trac uses external libraries with support for a great number of programming languages.

Currently Trac supports syntax coloring using one or more of the following packages:

Pygments, by far the preferred system, as it covers a wide range of programming languages and other structured texts and is actively supported
GNU Enscript, commonly available on Unix but somewhat unsupported on Windows
SilverCity, legacy system, some versions can be problematic

To activate syntax coloring, simply install either one (or more) of these packages (see #ExtraSoftware section below). If none of these packages is available, Trac will display the data as plain text.

About Pygments

Starting with trac 0.11 pygments will be the new default highlighter. It's a highlighting library implemented in pure python, very fast, easy to extend and well documented.

The Pygments default style can specified in the mime-viewer section of trac.ini. The default style can be overridden by setting a Style preference on the preferences page.

It's very likely that the list below is outdated because the list of supported pygments lexers is growing weekly. Just have a look at the page of supported lexers on the pygments webpage.

Syntax Coloring Support

Known MIME Types

MIME Types	WikiProcessors
`application/msword`	`doc dot`
`application/pdf`	`pdf`
`application/postscript`	`postscript ps`
`application/rss+xml`	`rss`
`application/rtf`	`rtf`
`application/x-befunge`	`befunge`
`application/x-brainfuck`	`bf brainfuck`
`application/x-clojure`	`clj clojure`
`application/x-coldfusion`	`cfm`
`application/x-csh`	`csh tcsh`
`application/x-cython`	`cython pyx`
`application/x-dos-batch`	`bat batch cmd dos`
`application/x-evoque`	`evoque`
`application/x-gooddata-maql`	`maql`
`application/x-httpd-php5`	`html+php`
`application/x-hybris`	`hy hybris`
`application/x-jinja`	`django jinja`
`application/x-jsp`	`jsp`
`application/x-kid`	`genshi kid xml+genshi xml+kid`
`application/x-lua`	`lua`
`application/x-mako`	`mako`
`application/x-mason`	`mason`
`application/x-myghty`	`myghty`
`application/x-perl`	`perl pl`
`application/x-pygments-tokens`	`raw`
`application/x-python`	`py python`
`application/x-python3`	`py3 python3`
`application/x-ruby`	`duby rb ruby`
`application/x-ruby-templating`	`erb`
`application/x-scheme`	`scheme scm`
`application/x-shell-session`	`console`
`application/x-shellscript`	`bash ksh sh`
`application/x-smarty`	`smarty`
`application/x-spitfire`	`cheetah spitfire`
`application/x-ssp`	`ssp`
`application/x-tcl`	`tcl`
`application/x-troff`	`roff troff`
`application/x-yaml`	`yml`
`application/xhtml+xml`	`html`
`application/xml+evoque`	`xml+evoque`
`application/xml+jinja`	`xml+django xml+jinja`
`application/xml+mako`	`xml+mako`
`application/xml+myghty`	`xml+myghty`
`application/xml+php`	`xml+php`
`application/xml+ruby`	`xml+erb xml+ruby`
`application/xml+smarty`	`xml+smarty`
`application/xml+spitfire`	`xml+cheetah xml+spitfire`
`application/xml+velocity`	`xml+velocity`
`application/xquery`	`xquery xqy`
`application/xsl+xml`	`xsl`
`application/xslt+xml`	`xml xslt`
`image/svg+xml`	`svg`
`image/x-icon`	`ico`
`model/vrml`	`vrml wrl`
`text/R`	`r s splus`
`text/actionscript`	`actionscript actionscript3 as as3`
`text/coffeescript`	`coffee-script coffeescript`
`text/css`	`css`
`text/css+genshi`	`css+genshi css+genshitext`
`text/css+jinja`	`css+django css+jinja`
`text/css+mako`	`css+mako`
`text/css+myghty`	`css+myghty`
`text/css+php`	`css+php`
`text/css+ruby`	`css+erb css+ruby`
`text/css+smarty`	`css+smarty`
`text/gettext`	`po pot`
`text/haxe`	`haXe hx`
`text/html`	`htm`
`text/html+evoque`	`html+evoque`
`text/html+genshi`	`html+genshi html+kid`
`text/html+jinja`	`html+django html+jinja`
`text/html+mako`	`html+mako`
`text/html+myghty`	`html+myghty`
`text/html+ruby`	`html+erb html+ruby rhtml`
`text/html+smarty`	`html+smarty`
`text/html+spitfire`	`html+cheetah html+spitfire`
`text/html+velocity`	`html+velocity`
`text/javascript`	`javascript js`
`text/javascript+genshi`	`javascript+genshi javascript+genshitext js+genshi js+genshitext`
`text/javascript+jinja`	`javascript+django javascript+jinja js+django js+jinja`
`text/javascript+mako`	`javascript+mako js+mako`
`text/javascript+mygthy`	`javascript+myghty js+myghty`
`text/javascript+php`	`javascript+php js+php`
`text/javascript+ruby`	`javascript+erb javascript+ruby js+erb js+ruby`
`text/javascript+smarty`	`javascript+smarty js+smarty`
`text/javascript+spitfire`	`javascript+cheetah javascript+spitfire js+cheetah js+spitfire`
`text/matlab`	`matlab octave`
`text/plain`	`AUTHORS COPYING ChangeLog INSTALL README RELEASE TXT text txt`
`text/prs.fallenstein.rst`	`rest restructuredtext rst`
`text/troff`	`groff man nroff`
`text/x-abap`	`abap`
`text/x-ada`	`ada ada95ada2005 adb ads`
`text/x-apacheconf`	`aconf apache apacheconf`
`text/x-asm`	`asm`
`text/x-asp`	`asp`
`text/x-asymptote`	`asy asymptote`
`text/x-autohotkey`	`ahk`
`text/x-awk`	`awk`
`text/x-bbcode`	`bbcode`
`text/x-bmx`	`blitzmax bmax`
`text/x-boo`	`boo`
`text/x-c++hdr`	`H HH c++hdr hh hpp`
`text/x-c++src`	`C C++ CC c++ c++src cc cpp`
`text/x-c-objdump`	`c-objdump`
`text/x-chdr`	`chdr h`
`text/x-cmake`	`cmake`
`text/x-common-lisp`	`cl common-lisp`
`text/x-cpp-objdump`	`c++-objdumb cpp-objdump cxx-objdump`
`text/x-csharp`	`C# c# cs csharp`
`text/x-csrc`	`c csrc xs`
`text/x-d-objdump`	`d-objdump`
`text/x-diff`	`patch`
`text/x-dsrc`	`d`
`text/x-dylan`	`dylan`
`text/x-eiffel`	`e eiffel`
`text/x-elisp`	`el elisp`
`text/x-erl-shellsession`	`erl`
`text/x-erlang`	`erlang`
`text/x-factor`	`factor`
`text/x-felix`	`felix flx`
`text/x-fortran`	`f f90 fortran`
`text/x-gas`	`gas`
`text/x-genshi`	`genshitext`
`text/x-gherkin`	`Cucumber Gherkin cucumber gherkin`
`text/x-glslsrc`	`glsl`
`text/x-gnuplot`	`gnuplot`
`text/x-gooddata-cl`	`gooddata-cl`
`text/x-gosrc`	`go`
`text/x-haml`	`HAML haml`
`text/x-haskell`	`haskell hs`
`text/x-idl`	`ice idl`
`text/x-inf`	`inf`
`text/x-ini`	`cfg ini`
`text/x-iokesrc`	`ik ioke`
`text/x-iosrc`	`io`
`text/x-irclog`	`irc`
`text/x-jade`	`JADE jade`
`text/x-java`	`java`
`text/x-java-properties`	`properties`
`text/x-jbst`	`Duel Engine Duel View JBST JsonML+BST duel jbst`
`text/x-latex`	`latex tex`
`text/x-lighttpd-conf`	`lighttpd lighty`
`text/x-literate-haskell`	`lhs literate-haskell`
`text/x-llvm`	`llvm`
`text/x-logtalk`	`logtalk`
`text/x-m4`	`m4`
`text/x-mail`	`mail`
`text/x-makefile`	`GNUMakefile Makefile bsdmake make makefile mf mk`
`text/x-minidsrc`	`minid`
`text/x-modelica`	`modelica`
`text/x-modula2`	`m2 modula2`
`text/x-moocode`	`moocode`
`text/x-mysql`	`mysql`
`text/x-nasm`	`nasm`
`text/x-newspeak`	`newspeak`
`text/x-nginx-conf`	`nginx`
`text/x-objc`	`m mm`
`text/x-objdump`	`objdump`
`text/x-objective-c`	`obj-c objc objective-c objectivec`
`text/x-objective-j`	`obj-j objective-j objectivej objj`
`text/x-ocaml`	`ml mli ocaml`
`text/x-ooc`	`ooc`
`text/x-pascal`	`delphi objectpascal pas pascal`
`text/x-patch`	`diff udiff`
`text/x-perl`	`PL pm`
`text/x-php`	`php php3 php4 php5`
`text/x-povray`	`pov`
`text/x-prolog`	`prolog`
`text/x-psp`	`psp`
`text/x-pyrex`	`pyrex`
`text/x-python-doctest`	`pycon`
`text/x-python-traceback`	`pytb`
`text/x-python3-traceback`	`py3tb`
`text/x-rebol`	`rebol`
`text/x-rfc`	`rfc`
`text/x-ruby-shellsession`	`irb rbcon`
`text/x-sass`	`SASS sass`
`text/x-scala`	`scala`
`text/x-scaml`	`SCAML scaml`
`text/x-scss`	`scss`
`text/x-smalltalk`	`smalltalk squeak`
`text/x-sql`	`sql`
`text/x-sqlite3-console`	`sqlite3`
`text/x-squidconf`	`squid squid.conf squidconf`
`text/x-textile`	`textile txtl`
`text/x-trac-wiki`	`moin trac-wiki`
`text/x-vala`	`vala vapi`
`text/x-vba`	`bas vb vb.net vba vbnet`
`text/x-verilog`	`v verilog`
`text/x-vhdl`	`vhd vhdl`
`text/x-vim`	`vim`
`text/x-yaml`	`yaml`
`text/x-zsh`	`zsh`

List of Languages Supported, by Highlighter

This list is only indicative.

	SilverCity	Enscript	Pygments
Ada		✓
Asm		✓
Apache Conf			✓
ASP	✓	✓
C	✓	✓	✓
C#		✓ ⁽¹⁾	✓
C++	✓	✓	✓
Java	✓ ⁽²⁾	✓	✓
Awk		✓
Boo			✓
CSS	✓		✓
Python Doctests			✓
Diff		✓	✓
Eiffel		✓
Elisp		✓
Fortran		✓ ⁽¹⁾	✓
Haskell		✓	✓
Genshi			✓
HTML	✓	✓	✓
IDL		✓
INI			✓
Javascript	✓	✓	✓
Lua			✓
m4		✓
Makefile		✓	✓
Mako			✓
Matlab ⁽³⁾		✓	✓
Mygthy			✓
Objective-C		✓	✓
OCaml			✓
Pascal		✓	✓
Perl	✓	✓	✓
PHP	✓		✓
PSP	✓
Pyrex		✓
Python	✓	✓	✓
Ruby	✓	✓ ⁽¹⁾	✓
Scheme		✓	✓
Shell		✓	✓
Smarty			✓
SQL	✓	✓	✓
Troff		✓	✓
TCL		✓
Tex		✓	✓
Verilog	✓ ⁽²⁾	✓
VHDL		✓
Visual Basic		✓	✓
VRML		✓
XML	✓		✓

(1) Not included in the Enscript distribution. Additional highlighting rules can be obtained for Ruby, C#, Fortran 90x/2003

(2) since Silvercity 0.9.7 released on 2006-11-23

(3) By default .m files are considered Objective-C files. In order to treat .m files as MATLAB files, add "text/matlab:m" to the "mime_map" setting in the [mimeviewer] section of trac.ini.

Extra Software

GNU Enscript -- http://directory.fsf.org/GNU/enscript.html
GNU Enscript for Windows -- http://gnuwin32.sourceforge.net/packages/enscript.htm
SilverCity -- http://silvercity.sf.net/
Pygments -- http://pygments.org/

See also: WikiProcessors, WikiFormatting, TracWiki, TracBrowser

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