Localization

<includeonly><!-- 
//trim
-->{{#vardefine:a1|{{{1|}}}}}<!-- namespace
-->{{#vardefine:a2|{{{2|}}}}}<!-- key
-->{{#vardefine:a3|{{{3|{{lang}}}}}}}<!-- lang

//autoload data if needed
-->{{#if:{{#dplvar:l10n:{{#var:a1}}/l10n}}||<!-- check namespace+lang flag
	-->{{#dplvar:set|l10n:{{#var:a1}}/l10n|y}}<!-- set check flag to prevent inexist namespace issue
	-->{{#vardefine:_|<!-- wrap to prevent the "template not existing" error output.
		-->{{{{#var:a1}}/l10n}}<!-- try to autoload template:<namespace>/l10n 
	-->}}<!-- 
-->}}<!-- 

//stack counter, to generate unique var name for each calling level, for proper recursion
-->{{#vardefine:__l10n_stack|{{#expr:{{#var:__l10n_stack|0}}+1}}}}<!-- 

// Localization string for current lang:
-->{{#vardefine:_l10n_v{{#var:__l10n_stack}}|{{#dplvar:l10n:{{#var:a3}}:{{#var:a1}}:{{#var:a2}}}}}}<!-- 
// if no result, use en version:
-->{{#vardefine:_l10n_v{{#var:__l10n_stack}}|{{#var:_l10n_v{{#var:__l10n_stack}}|{{#dplvar:l10n:en:{{#var:a1}}:{{#var:a2}}}}}}}}<!-- 

//replace if needed
-->{{#if:{{{long|}}}|<!-- 
	//since {{#replace:}} has a length limit, use lua to avoid hitting the limit. lua version is slower so require |long=y explicitly to use this way.
	-->{{#vardefine:_l10n_v{{#var:__l10n_stack}}|{{#invoke:localization|replace|str={{#var:_l10n_v{{#var:__l10n_stack}}}}}}}}<!-- 
-->|<!-- 
	//use {{#replace:}} for better performance.
	-->{{#forargs:$|_key|_value|<!-- 
		-->{{#vardefine:_l10n_v{{#var:__l10n_stack}}|{{#replace:{{#var:_l10n_v{{#var:__l10n_stack}}}}|${{#var:_key}}|{{#var:_value}}}}}}<!--
	-->}}<!--
-->}}<!-- 

//output
-->{{#var:_l10n_v{{#var:__l10n_stack}}}}<!-- 

//recover stack
-->{{#vardefine:__l10n_stack|{{#expr:{{#var:__l10n_stack|0}}-1}}}}<!-- 

--></includeonly><noinclude>{{doc}}</noinclude>