Hi, everyone, I have just noticed that `grep -P '[\d]' <<< 'asdf 1234 asdf'` does not work, while `grep -P '[0-9]' <<< 'asdf 1234 asdf'` works as expected. When `\d` is used outside of square brackets, it works as expected. I have no idea why `[\d]` does not work, but after I open this SO question, it seems to be a problem at least in `grep@3.10` or `3.7+` (excluding `3.7`). Note that I use Arch Linux and I have installed `grep` from the official repositories. `grep` version I currently use:
grep (GNU grep) 3.10
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This is free software: you are free to change and redistribute it.
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How this helps someone to find the bug in the code. :)
Tukusej’s Sirs
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