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bug#56077: Pattern Beginning With Dash Throws Error
From: |
gazip |
Subject: |
bug#56077: Pattern Beginning With Dash Throws Error |
Date: |
Sat, 18 Jun 2022 22:05:07 +0200 (CEST) |
Hello,
I just encountered a problem where when the search pattern starts with a dash,
grep interprets it as an argument parameter. It does not matter in what kind of
quotes the pattern is wrapped. See examples below.
$ echo "- break -" | grep "- break -"
grep: invalid option -- ' '
Usage: grep [OPTION]... PATTERNS [FILE]...
Try 'grep --help' for more information.
$ echo "- break -" | grep '- break -'
grep: invalid option -- ' '
Usage: grep [OPTION]... PATTERNS [FILE]...
Try 'grep --help' for more information.
$ echo "- break -" | grep '^- break -'
- break -
$ echo "- break -" | grep "^- break -"
- break -
$ echo "- break -" | grep "-s break -"
grep: invalid option -- ' '
Usage: grep [OPTION]... PATTERNS [FILE]...
Try 'grep --help' for more information.
grep Version: grep (GNU grep) 3.7
Sincerely,
Gazi
- bug#56077: Pattern Beginning With Dash Throws Error,
gazip <=