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Support for InterWiki links

Definition

An InterWiki link can be used for referring to a Wiki page located in another Wiki system, and by extension, to any object located in any other Web application, provided a simple URL mapping can be done.

InterWiki prefixes can even be used to introduce links to new protocols, such as tsvn: used by ​TortoiseSvn.

Link Syntax

<target_wiki>(:<identifier>)+

The link is composed by the targeted Wiki (or system) name, followed by a colon, eg MeatBall:, followed by a page specification in the target. Note that, as for InterTrac prefixes, InterWiki prefixes are case insensitive.

The target Wiki URL is looked up in the [interwiki] section of TracIni and in the InterMapTxt wiki page, modeled after ​MeatBall:InterMapTxt. If a prefix is defined in both the [interwiki] section and InterMapTxt, the [interwiki] section takes precedence.

In addition to traditional InterWiki links, where the target is simply appended to the URL, Trac supports parametric InterWiki URLs: identifiers $1, $2, ... in the URL will be replaced by corresponding arguments. The argument list is formed by splitting the page identifier using the ":" separator.

[interwiki]

Every option in the [interwiki] section in TracIni defines one InterWiki prefix. The option name defines the prefix. The option value defines the URL, optionally followed by a description separated from the URL by whitespace. Parametric URLs are supported as well.

Example:

[interwiki]
MeatBall = http://www.usemod.com/cgi-bin/mb.pl?
PEP = http://www.python.org/peps/pep-$1.html Python Enhancement Proposal $1
tsvn = tsvn: Interact with TortoiseSvn

Examples

For the following excerpt of the InterMapTxt page:

= InterMapTxt =
== This is the place for defining InterWiki prefixes ==

Currently active prefixes: [[InterWiki]]

This page is modelled after the MeatBall:InterMapTxt page.
In addition, an optional comment is allowed after the mapping.
----
{{{
PEP      http://www.python.org/peps/pep-$1.html           # Python Enhancement Proposal $1 
Trac-ML  http://thread.gmane.org/gmane.comp.version-control.subversion.trac.general/$1  # Message $1 in Trac Mailing List

tsvn     tsvn:                                            # Interact with TortoiseSvn
...
MeatBall http://www.usemod.com/cgi-bin/mb.pl?
MetaWiki http://sunir.org/apps/meta.pl?
MetaWikiPedia http://meta.wikipedia.org/wiki/
MoinMoin http://moinmoin.wikiwikiweb.de/
...
}}}

Then,

• MoinMoin:InterWikiMap will be rendered as ​MoinMoin:InterWikiMap and the title for that link will be "InterWikiMap in MoinMoin".
• Trac-ML:4346 will be rendered as Trac-ML:4346 and the title for that link will be "Message 4346 in Trac Mailing List".

List of Active Prefixes

Prefix	Site
Acronym	http://www.acronymfinder.com/af-query.asp?String=exact&Acronym=
babel	Babel $1/$2
Bitbucket	http://bitbucket.org/$1/$2
bitten	Bitten $1/$2
C2find	http://c2.com/cgi/wiki?FindPage&value=
c2Wiki	http://c2.com/cgi/wiki?
Cache	http://www.google.com/search?q=cache:
CPAN	http://search.cpan.org/perldoc?
DebianBug	http://bugs.debian.org/
DebianPackage	http://packages.debian.org/
Dictionary	http://www.dict.org/bin/Dict?Database=*&Form=Dict1&Strategy=*&Query=
gdiscussion	Discussion $2 in $1 Google
genshi	Genshi $1/$2
Github	http://github.com/$1/$2
gmessage
Google	http://www.google.com/search?q=
GoogleGroups	http://groups.google.com/groups?q=
JargonFile	http://downlode.org/perl/jargon-redirect.cgi?term=
MeatBall	http://www.usemod.com/cgi-bin/mb.pl?
MetaWiki	http://sunir.org/apps/meta.pl?
MetaWikiPedia	http://meta.wikipedia.org/wiki/
MoinMoin	http://moinmoin.wikiwikiweb.de/
PEP	Python Enhancement Proposal
PyPI	https://pypi.python.org/pypi/
SO	Stack Overflow question $1
StackOverflow	Stack Overflow question $1
TracML	Trac Mailing List (use rather googlegroups:trac-users:individual-msgid)
WhoIs	http://www.whois.sc/
Why	http://clublet.com/c/c/why?
WikiPedia	http://en.wikipedia.org/wiki/

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See also: InterTrac, InterMapTxt