Il 12/04/2014 19:35, Paul Eggert ha scritto:
Paolo Bonzini wrote:
It is also a regression that error messages will show "grep: error xyz"
rather than "egrep: error xyz".
That's a feature, not a bug :-). It reminds people to use 'grep' rather
than an obsolete extension.
Ok, I can buy this. :)
Please provide a testcase for your bug, I'm not sure whether I
understand it.
Ouch, in looking back at it I now see that *I* misunderstood it. You're
correct: that "if" statement avoided the problem that I saw. The point
remains that the previous code was Too Complicated, though.
Perhaps in penance I should write the little C wrappers I was talking
about.
C wrappers are better than shell scripts in terms of
portability---remember that Windows does have decent shells such as
PowerShell, just not POSIX ones. However, I'm not sure that the
complexity of C programs will be smaller than the complexity of grep
<=2.18's machinery.
One remaining problem with C wrappers is that they make the grep
installation non-relocatable and "non-separable". These are two
features that I'm afraid people are probably relying on for Windows targets.
There is certainly room for deprecating and/or removing part of the
"matcher" machinery. Why can't we take the safest path and revert for
2.19, and afterwards work on cleanups?
Paolo
