Template:User x and Template:User x/sandbox: Difference between pages

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{{#if: {{#invoke:ISO 639 name|iso_639_code_exists|{{#invoke:Ustring|sub|\{{BASEPAGENAME}}|6}}}}

| iso_639_code_exists==true — {{ISO 639 name|{{#invoke:String|match|s={{BASEPAGENAME}}|pattern=[a-z][a-z][a-z]?|start=5|plain=false|nomatch=mis}}}}<!--Extract 639 code from BASEPAGENAME; User st-0 is malformed IETF tag.-->

| iso_639_code_exists==false — {{ISO 639 name|{{#invoke:Ustring|sub|\{{BASEPAGENAME}}|6|-3}}<noinclude>en</noinclude>}}

}}

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