[bug #30792] --ignore-dir should not override files passed on the command line

[Nick Welch]

Follow-up Comment #1, bug #30792 (project grep):

I submitted this bug.  First of all, my mistake.  It is --exclude-dir.

Upon looking through the mailing list, I now see this message:
<http://lists.gnu.org/archive/html/bug-grep/2010-08/msg00003.html> and it
seems that this behavior may be a deliberate design decision and not just a
bug or oversight.  Is that the case?

I'm trying to set up a convenience alias for grep which ignores all dot
files/dirs.  However, I'm not having much luck.  The approach I described in
the ticket (excluding '.*') doesn't work because '.' gets matched.  So how
about '.?*' ?  Well, this mysteriously only searches items directly in the
current directory, without recursing.  '.??*' gives the same result.  I don't
understand this at all.

Excluding '.[0-9a-zA-Z]*' mostly works, but to make it truly universal I'd
need to add every conceivable character in there and that is not realistic.

Another approach is to use `pwd` instead of '.' as the argument, which
side-steps the problem; but this results in the output having all absolute
filenames, which is pretty unusable.

Is there any good way to do this?

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