URL:
<http://savannah.gnu.org/bugs/?35668>
Summary: odd behaviour with wildcard patterns accidently
matching file names
Project: grep
Submitted by: gotzl
Submitted on: Wed 29 Feb 2012 03:43:29 PM GMT
Category: None
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
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Details:
Scenario: extract numbers out of some text file
~ $ echo -e "123\n456" > test
~ $ cat test | grep [0-9][0-9][0-9]
123
456
~ $ touch 456
~ $ cat test | grep [0-9][0-9][0-9]
456
It seems that despite I pipe the output of cat to grep, it is getting confused
with a file matching the patter.
Doing "cat test | grep -e[0-9][0-9][0-9]" solves the problem,
but I find it kind of unintuitive to see grep failing w/o -e...
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