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Template:!/doc: Difference between revisions

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{{Documentation subpage}}
{{Documentation subpage}}
<!-- DO NOT move the "pp-template" to the template page since the ! template should be as short as possible to save server load (to not break template inclusion limits). -->
<!-- DO NOT move the "pp-template" to the template page since the ! template should be as short as possible to save server load (to not break template inclusion limits). -->
{{high-risk|2,500,000+}}
__NOTOC__
__NOTOC__


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It is possible to [[Wikipedia:Substitution|substitute]] <nowiki>{{!}}</nowiki> only if an unescaped "'''<code>|</code>'''" works as expected, i.e. after substituting the template containing <nowiki>{{!}}</nowiki>, or after eliminating an
It is possible to [[Wikipedia:Substitution|substitute]] <nowiki>{{!}}</nowiki> only if an unescaped "'''<code>|</code>'''" works as expected, i.e. after substituting the template containing <nowiki>{{!}}</nowiki>, or after eliminating an
[[mw:Help:Extension:ParserFunctions#.23if|#if]] containing <nowiki>{{!}}</nowiki>.
[[mw:Help:Extension:ParserFunctions#.23if|#if]] containing <nowiki>{{!}}</nowiki>.
=== A simple example ===
The following template code for {{tl|Quotation}} using an ordinary pipe character,
* <code><nowiki>{{Quotation|It is not possible to use an ordinary pipe character | in template parameters, as it will be interpreted as a separator.|[[Help:Template#Usage hints and workarounds]]}}</nowiki></code>
produces:
{{Quotation|It is not possible to use an ordinary pipe character | in template parameters, as it will be interpreted as a separator.|[[Help:Template#Usage hints and workarounds]]}}
whereas this code using the <nowiki>{{!}}</nowiki> meta-template,
* <code><nowiki>{{Quotation|It is not possible to use an ordinary pipe character {{!}} in template parameters, as it will be interpreted as a separator.|[[Help:Template#Usage hints and workarounds]]}}</nowiki></code>
produces:
{{Quotation|It is not possible to use an ordinary pipe character {{!}} in template parameters, as it will be interpreted as a separator.|[[Help:Template#Usage hints and workarounds]]}}
== See also ==
* {{tl|!!}} creates ||
* {{tl|!-}} creates |-
* {{tl|-!}} creates &amp;nbsp;|
* {{tn|'}} and related
* [[Wikipedia:Conditional tables]]
* {{tl|pipe}} - Note that this one looks like {{tlf|!}} but has a very different meaning for the MediaWiki parser and thus has different functionality.
* {{tn|(}} creates {
* {{tn|((}} creates {{
* {{tn|)}} creates }
* {{tn|))}} creates }}
* {{tl|!(}} creates [
* {{tl|)!}} creates ]
* {{tl|(!}} creates {|
* {{tl|!)}} creates |} 
* {{tl|1==}} creates =
* {{tl|Bar box}} — since {{tl|Bar}} redirects here


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Revision as of 20:49, 9 October 2012

Edit-copy green.png This is a documentation subpage for Template:!.
It contains usage information, categories, interlanguage links and other content that is not part of the original template page.


Usage

This is the {{!}} meta-template. Its use is analogous to an escape character.

This is an auxiliary template allowing the encoding of "|" within template parameters, because the pipe character is normally interpreted as a separator. This template is necessary if the character is used in wiki table syntax, or if the parameter is automatically wikilinked and you wish to use a pipe to specify different link text from the target page name. In other cases it is better to use "&#124;".

This template cannot be used for putting the character as text in a wiki table; in that case, again, "&#124;" can be used.

Note that no special template is needed for "!" (exclamation mark).

This is a high-risk template, and it usually cannot be substituted (see conditions for substing on the section below).

Substitution

It is possible to substitute {{!}} only if an unescaped "|" works as expected, i.e. after substituting the template containing {{!}}, or after eliminating an #if containing {{!}}.



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