comparison mercurial/ui.py @ 31535:d0f95ecca2ad

ui: restrict length of autogenerated blocked tags

Long autogenerated blocked tags tend to be because the command has an absolute
path; at Facebook, we've had a few where the tag is thousands of characters
long (in association with the mergedriver).

Change the default to use a suffix of a command as the default tag, limiting us
to 85 characters (for a 100 character tag). This is long enough to overflow a
standard terminal (thus be obviously autogenerated), but short enough to be
readable.

31534:2abba5068aa1

        if command fails and onerr is None, return status, else raise onerr
        object as exception.
        '''
        if blockedtag is None:
            blockedtag = 'unknown_system_' + cmd.translate(None, _keepalnum)
        out = self.fout
        if any(s[1] for s in self._bufferstates):
            out = self
        with self.timeblockedsection(blockedtag):
            rc = self._runsystem(cmd, environ=environ, cwd=cwd, out=out)

31535:d0f95ecca2ad

        if command fails and onerr is None, return status, else raise onerr
        object as exception.
        '''
        if blockedtag is None:
            # Long cmds tend to be because of an absolute path on cmd. Keep
            # the tail end instead
            cmdsuffix = cmd.translate(None, _keepalnum)[-85:]
            blockedtag = 'unknown_system_' + cmdsuffix
        out = self.fout
        if any(s[1] for s in self._bufferstates):
            out = self
        with self.timeblockedsection(blockedtag):
            rc = self._runsystem(cmd, environ=environ, cwd=cwd, out=out)