View source for Template:REVISIONUSER/doc

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== About REVISIONUSER ==

<nowiki>{{REVISIONUSER}}</nowiki> is a "[[Help:Magic words#Variables|magic word]]" that returns the last person to change an article.  On November 14, 2013, this feature was expanded to include <nowiki>{{REVISIONUSER:(article-name)}}</nowiki>, which makes it possible to query who edited any of a number of other articles.  This template '''does not''' need to be used in place of the magic word normally, but is provided so that a [[WP:Lua]] module can use ''frame:expandTemplate'' to access this function.  (There may well be some other better way to do this).

Example: <nowiki>{{REVISIONUSER|Astronomy}}</nowiki> -> {{REVISIONUSER|Astronomy}}.  (i.e. [[User:{{REVISIONUSER|Astronomy}}]])

But you can get this straight from the parser function by typing <nowiki>{{REVISIONUSER:Astronomy}}</nowiki>.

;Limitations:

* '''Note: Use of [[:mw:Help:Magic_words#REVISIONUSER:|REVISIONUSER]] with a parameter appears to be counted as an [https://www.mediawiki.org/wiki/Manual:$wgExpensiveParserFunctionLimit expensive parser function] against the page limit.'''  This can be confirmed using [[Module:Preview expense]].

{{tracked|T14974}}
* There is a '''Bug''' in the <code><nowiki>{{REVISIONUSER}}</nowiki></code> magic word (tracked in Phabricator as Task T166946) which prevents it from working properly if the user name starts with certain wiki-markup characters such as a * and possible other characters.  The work-around is to wrap the call to the magic word with the '''nowiki''' function of [[Module:String2]]:
*:For this page: <code><nowiki>{{#invoke:String2|nowiki|{{REVISIONUSER}}}}</nowiki></code> -> {{#invoke:String2|nowiki|{{REVISIONUSER}}}}
*:For [[User:***SkooterBecca***]]: <code><nowiki>{{#invoke:String2|nowiki|{{REVISIONUSER:User:***SkooterBecca***}}}}</nowiki></code> -> {{#invoke:String2|nowiki|{{REVISIONUSER:User:***SkooterBecca***}}}}
*:or <code><nowiki>{{#invoke:String2|nowiki|{{REVISIONUSER|User:***SkooterBecca***}}}}</nowiki></code> -> {{#invoke:String2|nowiki|{{REVISIONUSER|User:***SkooterBecca***}}}}
:For consistency with the magic word, this template does '''not''' make that adjustment.  The assumption is that if you are using ''frame:expandTemplate'' you also have the ability to implement code similar to the '''nowiki''' function of  [[Module:String2]].

== See also ==
* [[Template:REVISIONUSER2]]
* [[Template:REVISIONTIMESTAMP]]
* [[Template:Last edited by]]
* [[Template:Last user]]

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[[Category:Wikipedia magic word templates]]
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