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Grid/scripts/configure.commit

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#! /bin/sh
# Display the SHA1 of the commit in which configure.ac was last modified.
# If it's not checked in yet, use the SHA1 of HEAD plus -dirty.
#
if [ ! -d .git ] ; then
# if no .git directory, assume they're not using Git
printf 'unknown commit'
elif git diff --quiet HEAD -- configure.ac ; then
# configure.ac is not modified
printf 'commit: %s\n' `git rev-parse --short HEAD -- configure.ac`
printf 'branch: %s\n' `git rev-parse --abbrev-ref HEAD`
else # configure.ac is modified
printf 'commit: %s-dirty\n' `git rev-parse --short HEAD`
printf 'branch: %s\n' `git rev-parse --abbrev-ref HEAD`
fi