DokuWiki includes support for code syntax highlighting as described at the syntax page.

Starting with DokuWiki release “Greebo” some additional GeShi options for syntax highlighting are supported:

• Enable line numbers
• Start line numbers at line n
• Highlight certain lines extra

All options are set by adding some key-value pairs to the standard code-tag syntax. The following examples explain their usage.

The following code enables line numbers: <code JavaScript [enable_line_numbers=“true”]> var de = function() { return (typeof(window.de) == ‘object’) ? window.de : {}; }(); </code>

This is the result:

<code JavaScript [enable_line_numbers=“true”]> var de = function() {

return (typeof(window.de) == 'object') ? window.de : {};

}(); </code>

The next example additionally highlights one line: <code JavaScript [enable_line_numbers=“true”,highlight_lines_extra=“2”]> var de = function() { return (typeof(window.de) == ‘object’) ? window.de : {}; }(); </code>

This is the result: <code JavaScript [enable_line_numbers=“true”,highlight_lines_extra=“2”]> var de = function() {

return (typeof(window.de) == 'object') ? window.de : {};

}(); </code>

You can also highlight multiple lines: <code JavaScript [enable_line_numbers=“true”,highlight_lines_extra=“2,3”]> var de = function() { return (typeof(window.de) == ‘object’) ? window.de : {}; }(); </code>

This is the result: <code JavaScript [enable_line_numbers=“true”,highlight_lines_extra=“2,3”]> var de = function() {

return (typeof(window.de) == 'object') ? window.de : {};

}(); </code>

Line numbers can start at any given value: <code C [enable_line_numbers=“true”, start_line_numbers_at=“42”]> void main () {

  printf ("Hello World!");
  exit 0;

} </code>

This is the result:

<code C [enable_line_numbers=“true”, start_line_numbers_at=“42”]> void main () {

printf ("Hello World!");
exit 0;

} </code>