bug#17856: Unmatched right parenthesis in ERE

[Paul Eggert]

address@hidden wrote:
> Y'all might want to consider basing RE_SYNTAX_POSIX_EGREP
> off of RE_SYNTAX_POSIX_EXTENDED; that would have gotten this case.

At some point we should clean out those old RE_SYNTAX_* macros; half of 
them are just plain wrong anyway.  However, doing that will require a 
fix to glibc, which would take quite a long time to propagate through, 
and in the meantime the attached patch should suffice.  I've installed 
it and it should appear in the next grep release.  Thanks for reporting 
the bug, Nathan.

0001-grep-with-E-unmatched-matches-itself.patch
Description: Text document