Language codes in templates

Fragment of a discussion from User talk:Rua

Something else I've occasionally thought is that it would be great if the default language in any language-section were the language of that section (i.e. a language-less templated element in an English section would automatically be English). It seems to make sense and would save our poor fingers... I am probably missing some counterarguments, but I can't immediately think of any, except the lame one that it would inhibit manual copy-pasting where a second related language needs a similar entry.

Equinox 21:32, 24 November 2015

It would be great, but I have no idea how it might be done.

CodeCat21:59, 24 November 2015