Re: [PATCH 2/4] builtin/rev-parse: learn --null-oid

On Sep 18 2020, brian m. carlson wrote:

What I typically do when I write shell scripts, and which may obviate
the need for this patch is turn this:

  [ "$oid" = 0000000000000000000000000000000000000000 ]

into this:

  echo "$oid" | grep -qsE '^0+$'

This is slightly less efficient, but it's also backwards compatible
with older Git version assuming you have a POSIX grep.

You can also use

  case $oid in *[1-9a-f]*) ... ;; *) ... ;; esac

which doesn't need an external process.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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