What's Punjabi?
Hi. When I look at what Punjabi/pa in Gurmukhi or Devanagari script (?) in MediaWiki, it is known in ISO 639-3 as Eastern Punjabi (pan). It might also be 'pal' (ancient punjabi, used in Sikh ceremonies). MediaWiki also knows Western Punjabi/pnb (ISO 639-3) in Arabic script.
As you can see I am quite confused when someone says he is going to localise in Punjabi. Can you please clarify what you mean with Punjabi? Thanks!
Punjabi/pa is Gurmukhi Script,
and Western Punjabi/pnb is written in Arabic Script called Shahmukhi.
So Punjabi with default 'pa' goes for Gurmukhi Script, if someone want to translated with Punjabi Western or Shahmukhi script, need to use pa@arb or pnb.
for more references, Please check Mozilla bug: https://bugzilla.mozilla.org/show_bug.cgi?id=380287
Thanks