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git/git-request-pull.sh
Junio C Hamano f032d66ddb request-pull: do not emit "tag" before the tagname
The whole point of the recent update to allow "git pull $url $tagname" is
so that the integrator does not have to store the (signed) tag that is
used to convey authenticity to be recorded in the resulting merge in the
local repository's tag namespace.  Asking for a merge be made with "git
pull $url tag $tagname" defeats it.

Note that the request can become ambiguous if the requestor has a branch
with the same name as the tag, but that is not a new problem limited to
pulling. I wouldn't mind if somebody wants to add disambiguation to the
find_matching_ref logic in the script as a separate patch, though.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-19 11:59:57 -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/||) {
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:
' $baserev &&
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