Hi. Bruno Haible <br...@clisp.org> wrote:
> Is there some realistic possibility that the POSIX regex syntax might be > extended in the future, in such a way that [^0-9---] means something > different? That shouldn't happen, as one can point at V7 Unix and Unix awk and mawk as treating --- as "-" since forever. Existing practice trumps (or should trump) innovative new interpretations. > If that happens, and if we opt now to assign a meaning to this > regex, we would have to choose between POSIX compliance and backward > compatibility — a bad situation. I don't think it's a realistic worry. My two cents of course. I have already pushed this change in gawk's copy of regex. Thanks, Arnold
