git-rev-parse: parse ".." before simple SHA1's

diff --git a/git-commit-script b/git-commit-script
index 42ee399bc1028ab483aa4678ad376c065d7e7a5d..5e5c0ccb3a8605248e1467a6841a03ef65540eb0 100755 (executable)
--- a/git-commit-script
+++ b/git-commit-script
@@ -1,13 +1,48 @@
 #!/bin/sh
-git-status-script > .editmsg
+: ${GIT_DIR=.git}
+if [ ! -d $GIT_DIR ]; then
+       echo Not a git directory 1>&2
+       exit 1
+fi
+PARENTS="-p HEAD"
+if [ ! -r $GIT_DIR/HEAD ]; then
+       if [ -z "$(git-ls-files)" ]; then
+               echo Nothing to commit 1>&2
+               exit 1
+       fi
+       (
+               echo "#"
+               echo "# Initial commit"
+               echo "#"
+               git-ls-files | sed 's/^/# New file: /'
+               echo "#"
+       ) > .editmsg
+       PARENTS=""
+else
+       if [ -f $GIT_DIR/MERGE_HEAD ]; then
+               echo "#"
+               echo "# It looks like your may be committing a MERGE."
+               echo "# If this is not correct, please remove the file"
+               echo "# $GIT_DIR/MERGE_HEAD"
+               echo "# and try again"
+               echo "#"
+               PARENTS="-p HEAD -p MERGE_HEAD"
+       fi > .editmsg
+       git-status-script >> .editmsg
+fi
 if [ "$?" != "0" ]
 then
        cat .editmsg
+       rm .editmsg
        exit 1
 fi
 ${VISUAL:-${EDITOR:-vi}} .editmsg
 grep -v '^#' < .editmsg | git-stripspace > .cmitmsg
-[ -s .cmitmsg ] || exit 1
-tree=$(git-write-tree) || exit 1
-commit=$(cat .cmitmsg | git-commit-tree $tree -p HEAD) || exit 1
-echo $commit > .git/HEAD
+[ -s .cmitmsg ] && 
+       tree=$(git-write-tree) &&
+       commit=$(cat .cmitmsg | git-commit-tree $tree $PARENTS) &&
+       echo $commit > $GIT_DIR/HEAD &&
+       rm -f -- $GIT_DIR/MERGE_HEAD
+ret="$?"
+rm -f .cmitmsg .editmsg
+exit "$ret"