pull: do nothing on --dry-run
Pull was never meant to take --dry-run at all. However, it
passes unknown arguments to git-fetch, which does do a
dry-run. Unfortunately, pull then attempts to merge whatever
cruft was in FETCH_HEAD (which the dry-run fetch will not
have written to).
Even though we never advertise --dry-run as something that
should work, it is still worth being defensive because:
1. Other commands (including fetch) take --dry-run, so a
user might try it.
2. Rather than simply producing an error, it actually
changes the repository in totally unexpected ways.
This patch makes "pull --dry-run" equivalent to "fetch
--dry-run".
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git-pull.sh b/git-pull.sh
index 1a4729f..a09a44e 100755
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -43,6 +43,7 @@
curr_branch=$(git symbolic-ref -q HEAD)
curr_branch_short="${curr_branch#refs/heads/}"
rebase=$(git config --bool branch.$curr_branch_short.rebase)
+dry_run=
while :
do
case "$1" in
@@ -104,6 +105,9 @@
--no-r|--no-re|--no-reb|--no-reba|--no-rebas|--no-rebase)
rebase=false
;;
+ --d|--dr|--dry|--dry-|--dry-r|--dry-ru|--dry-run)
+ dry_run=--dry-run
+ ;;
-h|--h|--he|--hel|--help)
usage
;;
@@ -216,7 +220,8 @@
done
}
orig_head=$(git rev-parse -q --verify HEAD)
-git fetch $verbosity $progress --update-head-ok "$@" || exit 1
+git fetch $verbosity $progress $dry_run --update-head-ok "$@" || exit 1
+test -z "$dry_run" || exit 0
curr_head=$(git rev-parse -q --verify HEAD)
if test -n "$orig_head" && test "$curr_head" != "$orig_head"
