Merge branch 'maint'

diff --git a/git-pull.sh b/git-pull.sh
index c8920596050abc531d721dc95dfc8b11096ecd92..0bbd5bf7df185acd24302f9e5ce06e4a314d040a 100755 (executable)
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -16,7 +16,7 @@ cd_to_toplevel
 test -z "$(git ls-files -u)" ||
        die "You are in the middle of a conflicted merge."
 
-strategy_args= no_stat= no_commit= squash= no_ff= log_arg= verbosity=
+strategy_args= diffstat= no_commit= squash= no_ff= log_arg= verbosity=
 curr_branch=$(git symbolic-ref -q HEAD)
 curr_branch_short=$(echo "$curr_branch" | sed "s|refs/heads/||")
 rebase=$(git config --bool branch.$curr_branch_short.rebase)
@@ -28,9 +28,9 @@ do
        -v|--verbose)
                verbosity="$verbosity -v" ;;
        -n|--no-stat|--no-summary)
-               no_stat=-n ;;
+               diffstat=--no-stat ;;
        --stat|--summary)
-               no_stat=$1 ;;
+               diffstat=--stat ;;
        --log|--no-log)
                log_arg=$1 ;;
        --no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
@@ -119,18 +119,31 @@ error_on_no_merge_candidates () {
 }
 
 test true = "$rebase" && {
-       git update-index --ignore-submodules --refresh &&
-       git diff-files --ignore-submodules --quiet &&
-       git diff-index --ignore-submodules --cached --quiet HEAD -- ||
-       die "refusing to pull with rebase: your working tree is not up-to-date"
-
+       if ! git rev-parse -q --verify HEAD >/dev/null
+       then
+               # On an unborn branch
+               if test -f "$GIT_DIR/index"
+               then
+                       die "updating an unborn branch with changes added to the index"
+               fi
+       else
+               git update-index --ignore-submodules --refresh &&
+               git diff-files --ignore-submodules --quiet &&
+               git diff-index --ignore-submodules --cached --quiet HEAD -- ||
+               die "refusing to pull with rebase: your working tree is not up-to-date"
+       fi
+       oldremoteref= &&
        . git-parse-remote &&
-       origin="$1"
-       test -z "$origin" && origin=$(get_default_remote)
-       reflist="$(get_remote_refs_for_fetch "$@" 2>/dev/null |
-               sed "s|refs/heads/\(.*\):|\1|")" &&
-       oldremoteref="$(git rev-parse -q --verify \
-               "refs/remotes/$origin/$reflist")"
+       remoteref="$(get_remote_merge_branch "$@" 2>/dev/null)" &&
+       oldremoteref="$(git rev-parse -q --verify "$remoteref")" &&
+       for reflog in $(git rev-list -g $remoteref 2>/dev/null)
+       do
+               if test "$reflog" = "$(git merge-base $reflog $curr_branch)"
+               then
+                       oldremoteref="$reflog"
+                       break
+               fi
+       done
 }
 orig_head=$(git rev-parse -q --verify HEAD)
 git fetch $verbosity --update-head-ok "$@" || exit 1
@@ -147,7 +160,7 @@ then
        echo >&2 "Warning: fetch updated the current branch head."
        echo >&2 "Warning: fast forwarding your working tree from"
        echo >&2 "Warning: commit $orig_head."
-       git update-index --refresh 2>/dev/null
+       git update-index -q --refresh
        git read-tree -u -m "$orig_head" "$curr_head" ||
                die 'Cannot fast-forward your working tree.
 After making sure that you saved anything precious from
@@ -176,13 +189,11 @@ case "$merge_head" in
 ?*' '?*)
        if test -z "$orig_head"
        then
-               echo >&2 "Cannot merge multiple branches into empty head"
-               exit 1
+               die "Cannot merge multiple branches into empty head"
        fi
        if test true = "$rebase"
        then
-               echo >&2 "Cannot rebase onto multiple branches"
-               exit 1
+               die "Cannot rebase onto multiple branches"
        fi
        ;;
 esac
@@ -196,7 +207,7 @@ fi
 
 merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
 test true = "$rebase" &&
-       exec git-rebase $strategy_args --onto $merge_head \
+       exec git-rebase $diffstat $strategy_args --onto $merge_head \
        ${oldremoteref:-$merge_head}
-exec git-merge $no_stat $no_commit $squash $no_ff $log_arg $strategy_args \
+exec git-merge $diffstat $no_commit $squash $no_ff $log_arg $strategy_args \
        "$merge_name" HEAD $merge_head $verbosity