[gnuwin32 - Help] diff -I REGEXP doesn't accept |

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https://sourceforge.net/forum/message.php?msg_id=7498447
By: rovf

I wonder what subset of regexp is implemented for the  --ignore-matching-lines
option of diff. For example

  diff  "--ignore-matching-lines=x"

ignores lines containing an x, but

  diff  "--ignore-matching-lines=(w|x)"

takes lines containing an x into consideration. 




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