I'm on Ubuntu:

$ uname -a
Linux nile 5.15.0-118-generic #128-Ubuntu SMP Fri Jul 5 09:28:59 UTC 2024 
x86_64 x86_64 x86_64 GNU/Linux

I can't seem to get grep to match lines with ] in them when using [ ] 
expression.
grep only matches two characters string "\]" instead:

$ echo ']' | grep -E "[\]]" # supposed to return ] but doesn't
$ echo '\]' | grep -E "[\]]" # incorrectly matches '\]' but not ']'
\]

Possible grep bug:
grep doesn't seem to correctly handle escaped "\]" inside [ ] expressions.

Thank you,
Khoa



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