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= Support for InterWiki links
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== Definition
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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.
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InterWiki prefixes can even be used to simply introduce links to new protocols, such as `tsvn:` used by [trac:TortoiseSvn TortoiseSvn].
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== Link Syntax
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{{{
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<target_wiki>(:<identifier>)+
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}}}
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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.
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Note that, as for InterTrac prefixes, '''InterWiki prefixes are case insensitive'''.
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The target Wiki URL is looked up in the `[interwiki]` section of TracIni or 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.
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In addition to traditional InterWiki links, where the target is simply ''appended'' to the URL, Trac supports parametric InterWiki URLs:
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identifiers `$1`, `$2`, ... in the URL will be replaced by corresponding arguments.
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The argument list is formed by splitting the page identifier using the ":" separator.
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=== [interwiki]
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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.
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'''Example:'''
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{{{#!ini
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[interwiki]
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MeatBall = http://www.usemod.com/cgi-bin/mb.pl?
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PEP = http://www.python.org/peps/pep-$1.html Python Enhancement Proposal $1
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tsvn = tsvn: Interact with TortoiseSvn
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}}}
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== Examples
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If the following is an excerpt of the InterMapTxt page:
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{{{
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= InterMapTxt =
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== This is the place for defining InterWiki prefixes ==
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Currently active prefixes: [[InterWiki]]
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This page is modelled after the MeatBall:InterMapTxt page.
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In addition, an optional comment is allowed after the mapping.
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----
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{{{
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PEP http://www.python.org/peps/pep-$1.html # Python Enhancement Proposal $1
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Trac-ML http://thread.gmane.org/gmane.comp.version-control.subversion.trac.general/$1 # Message $1 in Trac Mailing List
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tsvn tsvn: # Interact with TortoiseSvn
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...
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MeatBall http://www.usemod.com/cgi-bin/mb.pl?
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MetaWiki http://sunir.org/apps/meta.pl?
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MetaWikiPedia http://meta.wikipedia.org/wiki/
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MoinMoin http://moinmoin.wikiwikiweb.de/
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...
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}}}
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}}}
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Then,
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* `MoinMoin:InterWikiMap` should be rendered as MoinMoin:InterWikiMap and the ''title'' for that link would be "!InterWikiMap in !MoinMoin".
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* `Trac-ML:4346` should be rendered as Trac-ML:4346 and the ''title'' for that link would be "Message 4346 in Trac Mailing List".
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----
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See also: InterTrac, InterMapTxt |
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\ No newline at end of file |
