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bug#33972: grep -vf <(<nothing>) filters all rows
From: |
Paul Eggert |
Subject: |
bug#33972: grep -vf <(<nothing>) filters all rows |
Date: |
Thu, 2 Jan 2020 01:04:21 -0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 |
> I have to pre-check for an empty set before passing it to grep:
> ...
> Workaround:
You're right that the empty pattern matches every line, since every line has an
empty string in it somewhere. This is considered to be a feature of grep, not a
bug. As you have a workaround I'm closing the bug report.
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