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{{Documentation subpage}} | {{Documentation subpage}} | ||
With this template the [[Help:parser functions|parser functions]] of the [[Help:ParserFunctions|ParserFunctions]] collection with names starting with "#if" can be used in a way such that they do not [[Help:Newlines_and_spaces#Stripping_on_expansion|strip spaces and newlines]] from the "then" and "else" part. Spaces still do not affext the outcome of the condition. | With this template the [[Help:parser functions|parser functions]] of the [[Help:ParserFunctions|ParserFunctions]] collection with names starting with "#if" can be used in a way such that they do not [[m:Help:Newlines_and_spaces#Stripping_on_expansion|strip spaces and newlines]] from the "then" and "else" part. Spaces still do not affext the outcome of the condition. | ||
==Usage== | ==Usage== | ||
*<nowiki>{{if||x| p | q }}</nowiki> gives "{{if||x| p | q }}" | *<nowiki>{{if||x| p | q }}</nowiki> gives "{{if||x| p | q }}" | ||
*<nowiki>{{if|expr|2<3| p | q }}</nowiki> gives " p " | *<nowiki>{{if|expr|2<3| p | q }}</nowiki> gives " p " | ||
Revision as of 07:49, 10 February 2008
{{#invoke:Message box|mbox}} With this template the parser functions of the ParserFunctions collection with names starting with "#if" can be used in a way such that they do not strip spaces and newlines from the "then" and "else" part. Spaces still do not affext the outcome of the condition.
Usage
- {{if||x| p | q }} gives " p "
- {{if|expr|2<3| p | q }} gives " p "
- {{if|eq| u |u| p | q }} gives " p "
- {{if|exist| Help:Link | p | q }} gives " q "
- {{if|error|{{#expr:x}}| p | q }} gives " p "
Compare:
- {{#if:x| p | q }} gives "p"
- {{#ifexpr:2<3| p | q }} gives "p"
- {{#ifeq: u |u| p | q }} gives "p"
- {{#ifexist: Help:Link | p | q }} gives "q"
- {{#iferror:{{#expr:x}}| p | q }} gives "p"
For full substitution, use e.g. {{subst:if|expr|2<3| p | q |subst=subst:}}. If the condition contains a parser function or template etc., that should be substituted too. Optionally the "then" or "else" part can also be substituted.