On Thu, Jun 04, 2009 at 03:55:38PM +0200, H. Langos wrote:
Seems like (at least) the API of #pos in ParserFunctions is different from the one in StringFunctions.
{{#pos: haysack|needle|offset}}
While the StringFunctions #pos in MediaWiki 1.14 returned an empty string when the needle was not found, the ParserFunctions implementation of #pos in svn now returns -1.
I forgot to ask THE question. Is it a bug or is there some good reason to break backward compatibility?
And no, programming language cosmetics is not a good reason. :-)
If something has the same interface, it should have the same behaviour. If the old semantics was too awful to bare, the new one should have been called #strpos or #fpos (for forward-#pos. #rpos always had the "-1 return on no-found" behaviour).
cheers -henrik