contrib: Fix non-portable sed commands in gcc-descr [PR102664/]

POSIX sed does not support \? or \+ in its Basic Regular Expression
grammar. Replace the \(tags/\)\? part of the pattern with a substitution
to remove ^tags/ before other substitutions. Replace \([0-9]\+\) with
\([0-9][0-9]*\) or with \([1-9][0-9]*\) in release branch numbers, where
a leading zero does not occur.

contrib/ChangeLog:

	PR other/102664
	* git-descr.sh: Use portable sed commands.
	* git-undescr.sh: Likewise.

diff --git a/contrib/git-descr.sh b/contrib/git-descr.sh
index ba5d711..9536327 100755 (executable)
--- a/contrib/git-descr.sh
+++ b/contrib/git-descr.sh
@@ -18,11 +18,11 @@ do
 done
 
 if test x$short = xyes; then
-    r=$(git describe --all --match 'basepoints/gcc-[0-9]*' $c | sed -n 's,^\(tags/\)\?basepoints/gcc-\([0-9]\+\)-\([0-9]\+\)-g[0-9a-f]*$,r\2-\3,p;s,^\(tags/\)\?basepoints/gcc-\([0-9]\+\)$,r\2-0,p');
+    r=$(git describe --all --match 'basepoints/gcc-[1-9]*' $c | sed -n 's,^tags/,,;s,^basepoints/gcc-\([1-9][0-9]*\)-\([0-9][0-9]*\)-g[0-9a-f]*$,r\1-\2,p;s,^basepoints/gcc-\([1-9][0-9]*\)$,r\1-0,p');
 elif test x$long = xyes; then
-    r=$(git describe --all --abbrev=40 --match 'basepoints/gcc-[0-9]*' $c | sed -n 's,^\(tags/\)\?basepoints/gcc-,r,p')
+    r=$(git describe --all --abbrev=40 --match 'basepoints/gcc-[1-9]*' $c | sed -n 's,^tags/,,;s,^basepoints/gcc-,r,p')
 else
-    r=$(git describe --all --abbrev=14 --match 'basepoints/gcc-[0-9]*' $c | sed -n 's,^\(tags/\)\?basepoints/gcc-,r,p');
+    r=$(git describe --all --abbrev=14 --match 'basepoints/gcc-[1-9]*' $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

diff --git a/contrib/git-undescr.sh b/contrib/git-undescr.sh
index 9d882a6..fd69407 100755 (executable)
--- a/contrib/git-undescr.sh
+++ b/contrib/git-undescr.sh
@@ -3,11 +3,11 @@
 # Script to undescribe a GCC revision
 
 o=$(git config --get gcc-config.upstream);
-r=$(echo $1 | sed -n 's,^r\([0-9]\+\)-[0-9]\+\(-g[0-9a-f]\+\)\?$,\1,p');
-n=$(echo $1 | sed -n 's,^r[0-9]\+-\([0-9]\+\)\(-g[0-9a-f]\+\)\?$,\1,p');
+r=$(echo $1 | sed -n 's,^r\([1-9][0-9]*\)-[0-9][0-9]*\(-g[0-9a-f]*\)*$,\1,p');
+n=$(echo $1 | sed -n 's,^r[1-9][0-9]*-\([0-9][0-9]*\)\(-g[0-9a-f]*\)*$,\1,p');
 
 test -z $r && echo Invalid id $1 && exit 1;
 h=$(git rev-parse --verify --quiet ${o:-origin}/releases/gcc-$r);
 test -z $h && h=$(git rev-parse --verify --quiet ${o:-origin}/master);
-p=$(git describe --all --match 'basepoints/gcc-'$r $h | sed -n 's,^\(tags/\)\?basepoints/gcc-[0-9]\+-\([0-9]\+\)-g[0-9a-f]*$,\2,p;s,^\(tags/\)\?basepoints/gcc-[0-9]\+$,0,p');
+p=$(git describe --all --match 'basepoints/gcc-'$r $h | sed -n 's,^tags/,,;s,^basepoints/gcc-[1-9][0-9]*-\([0-9][0-9]*\)-g[0-9a-f]*$,\1,p;s,^basepoints/gcc-[1-9][0-9]*$,0,p');
 git rev-parse --verify $h~$(expr $p - $n);