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bug#22820: grep: Misleading error message when presenting a badly formed
From: |
santiagorr |
Subject: |
bug#22820: grep: Misleading error message when presenting a badly formed character class |
Date: |
Fri, 26 Feb 2016 15:51:18 +0100 |
Hi,
I'd like to forward a bug filled by Gunnar Wolf in Debian some time
ago:
"It seems that whenever egrep finds something it cannot digest inside a
character class, it spews out the same error string: «Unmatched [ or [^».
This can be misleading and opens the way for long debugging time,
specially when trying to understand complex regexes. To illustrate the
point:
$ echo | egrep -v '[[:digit]]+'
egrep: Unmatched [ or [^
The brackets _are_ balanced, however the character class is not (it
lacks a finishing colon)."
Thanks,
Santiago
- bug#22820: grep: Misleading error message when presenting a badly formed character class,
santiagorr <=