gcc/contrib/git-descr.sh
Martin Liska 88b9d090aa gcc-descr: by default show revision for HEAD
I've made the mistake multiple times while doing a bisection.
One would expect that gcc-descr w/o an argument would print
revision for the current HEAD and not master.
Thus change it.

contrib/ChangeLog:

	* git-descr.sh: By default print revision for HEAD.
2022-07-04 12:27:43 +02:00

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#!/bin/sh
# Script to describe a GCC revision based on git hash
short=no
long=no
c=HEAD
for arg in "$@"
do
case "$arg" in
--short) short=yes long=no
;;
--long|--full) long=yes short=no
;;
*) c=$arg
esac
done
if test x$short = xyes; then
r=$(git describe --all --match 'basepoints/gcc-[0-9]*' $c | sed -n 's,^tags/,,;s,^basepoints/gcc-\([0-9][0-9]*\)-\([0-9][0-9]*\)-g[0-9a-f]*$,r\1-\2,p;s,^basepoints/gcc-\([0-9][0-9]*\)$,r\1-0,p');
elif test x$long = xyes; then
r=$(git describe --all --abbrev=40 --match 'basepoints/gcc-[0-9]*' $c | sed -n 's,^tags/,,;s,^basepoints/gcc-,r,p')
else
r=$(git describe --all --abbrev=14 --match 'basepoints/gcc-[0-9]*' $c | sed -n 's,^tags/,,;s,^basepoints/gcc-,r,p')
expr ${r:-no} : 'r[0-9]\+$' >/dev/null && r=${r}-0-g$(git rev-parse $c);
fi;
if test -n $r; then
o=$(git config --get gcc-config.upstream);
rr=$(echo $r | sed -n 's,^r\([0-9]\+\)-[0-9]\+\(-g[0-9a-f]\+\)\?$,\1,p');
if git rev-parse --verify --quiet ${o:-origin}/releases/gcc-$rr >/dev/null; then
m=releases/gcc-$rr;
else
m=master;
fi;
git merge-base --is-ancestor $c ${o:-origin}/$m && echo ${r};
fi;