Just adding a point of interest - RonW and Athanasius explain how to avoid the Leaning toothpick syndrome, which is also mentioned in perlop:

... you can use any pair of non-whitespace (ASCII) characters as delimiters. This is particularly useful for matching path names that contain "/" , to avoid LTS (leaning toothpick syndrome).

        ...it is unhealthy to remain near things that are in the process of blowing up.     man page for WARP, by Larry Wall

In reply to Re: grep for windows by NetWallah
in thread grep for windows by Aldebaran

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