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Changes between Version 3 and Version 4 of TracSyntaxColoring


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Timestamp:
May 30, 2017, 1:52:50 PM (5 months ago)
Author:
trac
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  • TracSyntaxColoring

    v3 v4  
    1 = Syntax Coloring of Source Code =
    2 Trac supports language-specific syntax highlighting of source code within wiki formatted text in [WikiProcessors#CodeHighlightingSupport wiki processors] blocks and in the [TracBrowser repository browser].
     1= Syntax Coloring of Source Code
     2Trac supports language-specific syntax highlighting of source code within wiki formatted text in [WikiProcessors#CodeHighlightingSupport wiki processors] blocks and in the [TracBrowser repository browser]. Syntax coloring is provided using [http://pygments.org/ Pygments], which covers a wide range of programming languages and other structured texts, and is actively supported. If Pygments is not available, Trac will display the content as plain text.
    33
    4 To do this, Trac uses external libraries with support for a great number of programming languages.
     4== About Pygments
    55
    6 Currently Trac supports syntax coloring using one or more of the following packages:
     6[http://pygments.org/ Pygments] is a highlighting library implemented in pure python, very fast, easy to extend and [http://pygments.org/docs/ well documented].
    77
    8  * [http://pygments.pocoo.org/ Pygments], by far the preferred system, as it covers a wide range of programming languages and other structured texts and is actively supported
    9  * [http://www.codento.com/people/mtr/genscript/ GNU Enscript], commonly available on Unix but somewhat unsupported on Windows
    10  * [http://silvercity.sourceforge.net/ SilverCity], legacy system, some versions can be [http://trac.edgewall.org/wiki/TracFaq#why-is-my-css-code-not-being-highlighted-even-though-i-have-silvercity-installed problematic]
     8The Pygments default style can specified in the [TracIni#mimeviewer-section mime-viewer] section of trac.ini. The default style can be overridden by setting a //Style// preference on the [/prefs/pygments preferences page].
    119
     10[http://pygments.org/docs/lexers/ Pygments lexer] options can be specified as [WikiProcessors WikiProcessor] arguments and defaults can be set in the [TracIni#pygments-lexer-section environment configuration].
    1211
    13 To activate syntax coloring, simply install either one (or more) of these packages (see [#ExtraSoftware] section below).
    14 If none of these packages is available, Trac will display the data as plain text.
     12== Syntax Coloring Support
    1513
     14=== Supported languages
    1615
    17 === About Pygments ===
     16The list of currently supported languages can be found on the [http://pygments.org/languages/ supported languages] page. The list represents the languages supported in the most recent version of Pygments, so the languages actually supported in your installation could differ if you have an older version installed. The listing of [http://pygments.org/docs/lexers/ supported lexers] provides additional information about the default mime type to keyword mappings.
    1817
    19 Starting with trac 0.11 [http://pygments.org/ pygments] will be the new default highlighter. It's a highlighting library implemented in pure python, very fast, easy to extend and [http://pygments.org/docs/ well documented].
     18Explicit control of the mime type associated with a [WikiProcessors WikiProcessor] and file extension is available through the `mime_map` setting. For example, by default `.m` files are considered Objective-C files. In order to treat `.m` files as MATLAB files, add `text/matlab:m` to the [wiki:TracIni#mimeviewer-mime_map-option "[mimeviewer] mime_map"] option.
    2019
    21 The Pygments default style can specified in the [TracIni#mimeviewer-section mime-viewer] section of trac.ini. The default style can be overridden by setting a Style preference on the [/prefs/pygments preferences page].
     20If a mimetype property such as `svn:mime-type` is set to `text/plain`, there is no coloring even if file is known type like `java`.
    2221
    23 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 [http://pygments.org/docs/lexers/ supported lexers] on the pygments webpage.
     22=== Direct Rendering
    2423
     24Rich content may be directly //rendered// instead of syntax highlighted. This usually depends on which auxiliary packages are installed and which components are activated in your setup. For example, a `text/x-rst` document will be rendered via `docutils` if it is installed and the `trac.mimeview.rst.ReStructuredTextRenderer` is not disabled. It will be syntax highlighted otherwise.
    2525
    26 == Syntax Coloring Support ==
     26Similarly, a document with the mimetype `text/x-trac-wiki` is rendered using the Trac wiki formatter, unless the `trac.mimeview.api.WikiTextRenderer` component is disabled. If you want to ensure that an HTML document gets syntax highlighted and not rendered, use the `text/xml` mimetype.
    2727
    28 === Known MIME Types
     28HTML documents are directly rendered only if the `render_unsafe_html` settings are enabled in your TracIni file. See [TracIni#attachment-render_unsafe_content-option "[attachment] render_unsafe_content"], [TracIni#browser-render_unsafe_content-option "[browser] render_unsafe_content"] and [TracIni#wiki-render_unsafe_content-option "[wiki] render_unsafe_content"]. The setting is present in multiple sections because there are different security concerns depending on where the document comes from.
     29
     30=== Known MIME types
    2931
    3032[[KnownMimeTypes]]
    3133
    32 Note that the rich content may be directly //rendered// instead of syntax highlighted. This usually depends on which auxiliary packages are installed and on which components are activated in your setup. For example a `text/x-rst` document will be rendered via `docutils` if it is installed and the `trac.mimeview.rst.ReStructuredTextRenderer` is not disabled, and will be syntax highlighted otherwise.
    33 
    34 In a similar way, a document with the mimetype `text/x-trac-wiki` is rendered using the Trac wiki formatter, unless the `trac.mimeview.api.WikiTextRenderer` component is disabled.
    35 
    36 HTML documents are directly rendered only if the `render_unsafe_html` settings are enabled in the TracIni (those settings are present in multiple sections, as there are different security concerns depending where the document comes from). If you want to ensure that an HTML document gets syntax highlighted and not rendered, use the `text/xml` mimetype.
    37 
    38 If mimetype such as 'svn:mime-type' is set to 'text/plain', there is no coloring even if file is known type like 'java'.
    39 
    40 === List of Languages Supported, by Highlighter #language-supported
    41 
    42 This list is only indicative.
    43 
    44 ||                 ||= !SilverCity   =||= Enscript      =||= Pygments =||
    45 || Ada             ||                 ||  ✓              ||     ||
    46 || Asm             ||                 ||  ✓              ||     ||
    47 || Apache Conf     ||                 ||                 ||  ✓  ||
    48 || ASP             ||  ✓              ||  ✓              ||     ||
    49 || C               ||  ✓              ||  ✓              ||  ✓  ||
    50 || C#              ||                 ||  ✓ ^[#a1 (1)]^  ||  ✓  ||
    51 || C++             ||  ✓              ||  ✓              ||  ✓  ||
    52 || CMake           ||  ?              ||  ?              ||  ✓  ||
    53 || Java            ||  ✓ ^[#a2 (2)]^  ||  ✓              ||  ✓  ||
    54 || Awk             ||                 ||  ✓              ||     ||
    55 || Boo             ||                 ||                 ||  ✓  ||
    56 || CSS             ||  ✓              ||                 ||  ✓  ||
    57 || Python Doctests ||                 ||                 ||  ✓  ||
    58 || Diff            ||                 ||  ✓              ||  ✓  ||
    59 || Eiffel          ||                 ||  ✓              ||     ||
    60 || Elisp           ||                 ||  ✓              ||     ||
    61 || Fortran         ||                 ||  ✓ ^[#a1 (1)]^  ||  ✓  ||
    62 || Haskell         ||                 ||  ✓              ||  ✓  ||
    63 || Genshi          ||                 ||                 ||  ✓  ||
    64 || HTML            ||  ✓              ||  ✓              ||  ✓  ||
    65 || IDL             ||                 ||  ✓              ||     ||
    66 || INI             ||                 ||                 ||  ✓  ||
    67 || Javascript      ||  ✓              ||  ✓              ||  ✓  ||
    68 || Lua             ||                 ||                 ||  ✓  ||
    69 || m4              ||                 ||  ✓              ||     ||
    70 || Makefile        ||                 ||  ✓              ||  ✓  ||
    71 || Mako            ||                 ||                 ||  ✓  ||
    72 || Matlab ^[#a3 (3)]^  ||             ||  ✓              ||  ✓  ||
    73 || Mygthy          ||                 ||                 ||  ✓  ||
    74 || Objective-C     ||                 ||  ✓              ||  ✓  ||
    75 || OCaml           ||                 ||                 ||  ✓  ||
    76 || Pascal          ||                 ||  ✓              ||  ✓  ||
    77 || Perl            ||  ✓              ||  ✓              ||  ✓  ||
    78 || PHP             ||  ✓              ||                 ||  ✓  ||
    79 || PSP             ||  ✓              ||                 ||     ||
    80 || Pyrex           ||                 ||  ✓              ||     ||
    81 || Python          ||  ✓              ||  ✓              ||  ✓  ||
    82 || Ruby            ||  ✓              ||  ✓ ^[#a1 (1)]^  ||  ✓  ||
    83 || Scheme          ||                 ||  ✓              ||  ✓  ||
    84 || Shell           ||                 ||  ✓              ||  ✓  ||
    85 || Smarty          ||                 ||                 ||  ✓  ||
    86 || SQL             ||  ✓              ||  ✓              ||  ✓  ||
    87 || Troff           ||                 ||  ✓              ||  ✓  ||
    88 || TCL             ||                 ||  ✓              ||     ||
    89 || Tex             ||                 ||  ✓              ||  ✓  ||
    90 || Verilog         ||  ✓ ^[#a2 (2)]^  ||  ✓              ||     ||
    91 || VHDL            ||                 ||  ✓              ||     ||
    92 || Visual Basic    ||                 ||  ✓              ||  ✓  ||
    93 || VRML            ||                 ||  ✓              ||     ||
    94 || XML             ||  ✓              ||                 ||  ✓  ||
    95 
    96 
    97 
    98 ''[=#a1 (1)] Not included in the Enscript distribution.  Additional highlighting rules can be obtained for
    99 [http://neugierig.org/software/ruby/ Ruby],
    100 [http://wiki.hasno.info/index.php/Csharp.st C#],
    101 [http://wiki.hasno.info/index.php/F90.st Fortran 90x/2003]
    102 
    103 ''[=#a2 (2)] since Silvercity 0.9.7 released on 2006-11-23
    104 
    105 ''[=#a3 (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 [wiki:TracIni#mimeviewer-section "[mimeviewer] section of trac.ini"].
    106 
    107 == Extra Software ==
    108  * GNU Enscript — http://directory.fsf.org/GNU/enscript.html
    109  * GNU Enscript for Windows — http://gnuwin32.sourceforge.net/packages/enscript.htm
    110  * !SilverCity — http://silvercity.sf.net/
    111  * **Pygments — http://pygments.org/**
    112 
    11334----
    11435See also: WikiProcessors, WikiFormatting, TracWiki, TracBrowser