diff options
| -rwxr-xr-x | git-fetch-script | 34 | ||||
| -rwxr-xr-x | git-pull-script | 20 |
2 files changed, 49 insertions, 5 deletions
diff --git a/git-fetch-script b/git-fetch-script index b581dc4cd6..dd94edeb38 100755 --- a/git-fetch-script +++ b/git-fetch-script @@ -7,28 +7,33 @@ _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40" append= force= +update_head_ok= while case "$#" in 0) break ;; esac do case "$1" in -a|--a|--ap|--app|--appe|--appen|--append) append=t - shift ;; -f|--f|--fo|--for|--forc|--force) force=t - shift + ;; + -u|--u|--up|--upd|--upda|--updat|--update|--update-|--update-h|\ + --update-he|--update-hea|--update-head|--update-head-|\ + --update-head-o|--update-head-ok) + update_head_ok=t ;; *) break ;; esac + shift done case "$#" in 0) test -f "$GIT_DIR/branches/origin" || test -f "$GIT_DIR/remotes/origin" || - die "Where do you want to fetch from?" + die "Where do you want to fetch from today?" set origin ;; esac @@ -124,6 +129,12 @@ fast_forward_local () { esac } +case "$update_head_ok" in +'') + orig_head=$(cat "$GIT_DIR/HEAD" 2>/dev/null) + ;; +esac + for ref in $(get_remote_refs_for_fetch "$@") do refs="$refs $ref" @@ -150,7 +161,7 @@ do fi head=$(curl -nsf $curl_extra_args "$remote/$remote_name") && expr "$head" : "$_x40\$" >/dev/null || - die "Failed to fetch $remote_name from $remote" + die "Failed to fetch $remote_name from $remote" echo Fetching "$remote_name from $remote" using http git-http-pull -v -a "$head" "$remote/" || exit ;; @@ -201,3 +212,18 @@ http://* | https://* | rsync://* ) done ;; esac + +# If the original head was empty (i.e. no "master" yet), or +# if we were told not to worry, we do not have to check. +case ",$update_head_ok,$orig_head," in +*,, | t,* ) + ;; +*) + curr_head=$(cat "$GIT_DIR/HEAD" 2>/dev/null) + if test "$curr_head" != "$orig_head" + then + echo "$orig_head" >$GIT_DIR/HEAD + die "Cannot fetch into the current branch." + fi + ;; +esac diff --git a/git-pull-script b/git-pull-script index 7016fbf943..c31a65ca8c 100755 --- a/git-pull-script +++ b/git-pull-script @@ -5,7 +5,25 @@ # Fetch one or more remote refs and merge it/them into the current HEAD. . git-sh-setup-script || die "Not a git archive" -git-fetch-script "$@" || exit 1 + +orig_head=$(cat "$GIT_DIR/HEAD") || die "Pulling into a black hole?" +git-fetch-script --update-head-ok "$@" || exit 1 + +curr_head=$(cat "$GIT_DIR/HEAD") +if test "$curr_head" != "$orig_head" +then + # The fetch involved updating the current branch. + + # The working tree and the index file is still based on the + # $orig_head commit, but we are merging into $curr_head. + # First update the working tree to match $curr_head. + + echo >&2 "Warning: fetch updated the current branch head." + echo >&2 "Warning: fast forwarding your working tree." + git-read-tree -u -m "$orig_head" "$curr_head" || + die "You need to first update your working tree." +fi + merge_head=$(sed -e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | tr '\012' ' ') merge_name=$(sed -e 's/^[0-9a-f]* //' "$GIT_DIR"/FETCH_HEAD | tr '\012' ' ') |