# Changes between Version 3 and Version 4 of InterWiki

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Timestamp:
01/14/19 00:01:55 (2 years ago)
Comment:

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### Legend:

Unmodified
 v3 = Support for InterWiki links = = Support for InterWiki links ''(since [trac:milestone:0.10 0.10])'' == Definition == 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. 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 simply introduce links to new protocols, such as tsvn: used by [trac:TortoiseSvn TortoiseSvn]. At the extreme, InterWiki prefixes can even be used to simply introduce links to new protocols, such as tsvn: used by [trac:TortoiseSvn TortoiseSvn]. == Link Syntax == == Link Syntax {{{ }}} The link is composed by the targeted Wiki (or system) name, followed by a colon (e.g. MeatBall:), followed by a page specification in the target. 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 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. 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. 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] === === [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:''' {{{ {{{#!ini [interwiki] MeatBall = http://www.usemod.com/cgi-bin/mb.pl? }}} == Examples == == Examples If the following is an excerpt of the InterMapTxt page: Then, * MoinMoin:InterWikiMap should be rendered as MoinMoin:InterWikiMap and the ''title'' for that link would be "!InterWikiMap in !MoinMoin" * Trac-ML:4346 should be rendered as Trac-ML:4346 and the ''title'' for that link would be "Message 4346 in Trac Mailing List" * MoinMoin:InterWikiMap should be rendered as MoinMoin:InterWikiMap and the ''title'' for that link would be "!InterWikiMap in !MoinMoin". * Trac-ML:4346 should be rendered as Trac-ML:4346 and the ''title'' for that link would be "Message 4346 in Trac Mailing List". ----