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git/git-request-pull.sh
Junio C Hamano 2ad9ba0382 request-pull: explicitly ask tags/$name to be pulled
When asking for a tag to be pulled, disambiguate by leaving tags/ prefix
in front of the name of the tag. E.g.

    ... in the git repository at:

      git://example.com/git/git.git/ tags/v1.2.3

    for you to fetch changes up to 123456...

This way, older versions of "git pull" can be used to respond to such a
request more easily, as "git pull $URL v1.2.3" did not DWIM to fetch
v1.2.3 tag in older versions. Also this makes it clearer for humans that
the pull request is made for a tag and he should anticipate a signed one.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-31 21:27:58 -08:00

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#!/bin/sh
# Copyright 2005, Ryan Anderson <ryan@michonline.com>
#
# This file is licensed under the GPL v2, or a later version
# at the discretion of Linus Torvalds.
USAGE='<start> <url> [<end>]'
LONG_USAGE='Summarizes the changes between two commits to the standard output,
and includes the given URL in the generated summary.'
SUBDIRECTORY_OK='Yes'
OPTIONS_KEEPDASHDASH=
OPTIONS_SPEC='git request-pull [options] start url [end]
--
p show patch text as well
'
. git-sh-setup
GIT_PAGER=
export GIT_PAGER
patch=
while case "$#" in 0) break ;; esac
do
case "$1" in
-p)
patch=-p ;;
--)
shift; break ;;
-*)
usage ;;
*)
break ;;
esac
shift
done
base=$1 url=$2 head=${3-HEAD} status=0 branch_name=
headref=$(git symbolic-ref -q "$head")
if git show-ref -q --verify "$headref"
then
branch_name=${headref#refs/heads/}
if test "z$branch_name" = "z$headref" ||
! git config "branch.$branch_name.description" >/dev/null
then
branch_name=
fi
fi
tag_name=$(git describe --exact "$head^0" 2>/dev/null)
test -n "$base" && test -n "$url" || usage
baserev=$(git rev-parse --verify "$base"^0) &&
headrev=$(git rev-parse --verify "$head"^0) || exit
merge_base=$(git merge-base $baserev $headrev) ||
die "fatal: No commits in common between $base and $head"
# $head is the token given from the command line. If a ref with that
# name exists at the remote and their values match, we should use it.
# Otherwise find a 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 $ref;
}
}
my ($exact, $found);
while (<STDIN>) {
my ($sha1, $ref, $deref) = /^(\S+)\s+(\S+?)(\^\{\})?$/;
next unless ($sha1 eq $ARGV[1]);
$found = abbr($ref);
if ($ref =~ m|/\Q$ARGV[0]\E$|) {
$exact = $found;
last;
}
}
if ($exact) {
print "$exact\n";
} elsif ($found) {
print "$found\n";
}
'
ref=$(git ls-remote "$url" | perl -e "$find_matching_ref" "$head" "$headrev")
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:
' $merge_base &&
echo " $url${ref+ $ref}" &&
git show -s --format='
for you to fetch changes up to %H:
%s (%ci)
----------------------------------------------------------------' $headrev &&
if test -n "$branch_name"
then
echo "(from the branch description for $branch_name local branch)"
echo
git config "branch.$branch_name.description"
fi &&
if test -n "$tag_name"
then
git cat-file tag "$tag_name" |
sed -n -e '1,/^$/d' -e '/^-----BEGIN PGP /q' -e p
echo
fi &&
if test -n "$branch_name" || test -n "$tag_name"
then
echo "----------------------------------------------------------------"
fi &&
git shortlog ^$baserev $headrev &&
git diff -M --stat --summary $patch $merge_base..$headrev || status=1
if test -z "$ref"
then
echo "warn: No branch of $url is at:" >&2
git show -s --format='warn: %h: %s' $headrev >&2
echo "warn: Are you sure you pushed '$head' there?" >&2
status=1
fi
exit $status