bash_completion: don't complete export with "garbage" when mq is not around
The "garbage" is the output of hg help printed when a command is not found.
#!/bin/shecho 'syntax error' > badext.pyabspath=`pwd`/badext.pyecho '[extensions]' >> $HGRCPATHecho "badext = $abspath" >> $HGRCPATHhg -q help help