There were two different circumstances that could trigger echo's signature
detection to fail: multibyte characters in signature, and signatures near
$wgMaxSigChars limit that expanded past the limit due to wfEscapeWikiText().
This patch adjusts to use mb_substr to appropriatly handle the multibyte
characters, and adds a couple extra charactesr to $wgMaxSigChars to allow
for wfEscapeWikiText(). This isn't perfect, but a stricter implementation
would require much more work than i think we should spend here.
Bug: 73426
Change-Id: Ic51c2bc2a08600f188db13a9a0537f1321c9a655
Currently echo attempts to find a signature by looking for a series of
strings starting with what it thinks are the current aliases of NS_USER
and NS_USER_TALK. This has shown to be error prone, see the linked bug
for how a change to ru.wikipedia.org/wiki/Mediawiki:Signature broke
mention notifications.
Patch switches things arround to pull wikilinks out of the text and run
them through the Title class. The results of this parsing are checked
for NS_USER and NS_USER_TALK, giving a much stronger guarantee of finding
translated namespaces.
Bug: 71353
Change-Id: Ib0d0f4e068339d2fd28761087c05f5a1acb3c1fc
