merge_base=$(git merge-base $baserev $headrev) ||
die "fatal: No commits in common between $base and $head"
-find_matching_branch="/^$headrev "'refs\/heads\//{
- s/^.* refs\/heads\///
- p
- q
-}'
-branch=$(git ls-remote "$url" | sed -n -e "$find_matching_branch")
+# $head is the token given from the command line, and $tag_name, if
+# exists, is the tag we are going to show the commit information for.
+# If that tag exists at the remote and it points at the commit, use it.
+# Otherwise, if a branch with the same name as $head exists at the remote
+# and their values match, use that instead.
+#
+# Otherwise find a random ref that matches $headrev.
+find_matching_ref='
+ sub abbr {
+ my $ref = shift;
+ if ($ref =~ s|^refs/heads/|| || $ref =~ s|^refs/tags/|tags/|) {
+ return $ref;
+ } else {
+ return $ref;
+ }
+ }
+
+ my ($tagged, $branch, $found);
+ while (<STDIN>) {
+ my ($sha1, $ref, $deref) = /^(\S+)\s+(\S+?)(\^\{\})?$/;
+ next unless ($sha1 eq $ARGV[1]);
+ $found = abbr($ref);
+ if ($deref && $ref eq "tags/$ARGV[2]") {
+ $tagged = $found;
+ last;
+ }
+ if ($ref =~ m|/\Q$ARGV[0]\E$|) {
+ $exact = $found;
+ }
+ }
+ if ($tagged) {
+ print "$tagged\n";
+ } elsif ($exact) {
+ print "$exact\n";
+ } elsif ($found) {
+ print "$found\n";
+ }
+'
+
+ref=$(git ls-remote "$url" | perl -e "$find_matching_ref" "$head" "$headrev" "$tag_name")
+
url=$(git ls-remote --get-url "$url")
git show -s --format='The following changes since commit %H:
%s (%ci)
are available in the git repository at:
-' $baserev &&
-echo " $url${branch+ $branch}" &&
+' $merge_base &&
+echo " $url${ref+ $ref}" &&
git show -s --format='
for you to fetch changes up to %H:
if test -n "$branch_name"
then
- echo "(from the branch description for $branch local branch)"
+ echo "(from the branch description for $branch_name local branch)"
echo
git config "branch.$branch_name.description"
fi &&
if test -n "$tag_name"
then
+ if test -z "$ref" || test "$ref" != "tags/$tag_name"
+ then
+ echo >&2 "warn: You locally have $tag_name but it does not (yet)"
+ echo >&2 "warn: appear to be at $url"
+ echo >&2 "warn: Do you want to push it there, perhaps?"
+ fi
git cat-file tag "$tag_name" |
sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
echo
git shortlog ^$baserev $headrev &&
git diff -M --stat --summary $patch $merge_base..$headrev || status=1
-if test -z "$branch"
+if test -z "$ref"
then
echo "warn: No branch of $url is at:" >&2
git show -s --format='warn: %h: %s' $headrev >&2