Jaakko Heinonen escribió:
On 2008-06-17, Gabor Kovesdan wrote:
egrep: empty (sub)expression
I've looked at this and I have a patch with a workaround:
http://kovesdan.org/patches/grep.dougb.diff
Unfortunately this breaks things. For example:
$ grep -E '(test||test)' /dev/null
grep: parentheses not balanced
$ grep -E '(test|\|)' /dev/null
grep: parentheses not balanced
$ grep -E '\(|test)' /dev/null
(should give an error but it hangs)
Ugly enough, but seems to be fixed in my working copy. Thanks for the
report.
Gabor
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