Merge branch 'jn/submodule-basic-test'

[~andy/git] / git-rebase.sh

diff --git a/git-rebase.sh b/git-rebase.sh
index 18bc6946cfa592c11cf7499b1c1ff9a6cb378b26..44f5c65fdb5e81c4b660a666c2edd71aa75c5c1a 100755 (executable)
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2005 Junio C Hamano.
 #
 
-USAGE='[--interactive | -i] [-v] [--force-rebase | -f] [--onto <newbase>] [<upstream>|--root] [<branch>] [--quiet | -q]'
+USAGE='[--interactive | -i] [-v] [--force-rebase | -f] [--no-ff] [--onto <newbase>] [<upstream>|--root] [<branch>] [--quiet | -q]'
 LONG_USAGE='git-rebase replaces <branch> with a new branch of the
 same name.  When the --onto option is provided the new branch starts
 out with a HEAD equal to <newbase>, otherwise it is equal to <upstream>
@@ -34,6 +34,8 @@ set_reflog_action rebase
 require_work_tree
 cd_to_toplevel
 
+LF='
+'
 OK_TO_SKIP_PRE_REBASE=
 RESOLVEMSG="
 When you have resolved this problem run \"git rebase --continue\".
@@ -50,6 +52,7 @@ diffstat=$(git config --bool rebase.stat)
 git_am_opt=
 rebase_root=
 force_rebase=
+allow_rerere_autoupdate=
 
 continue_merge () {
        test -n "$prev_head" || die "prev_head must be defined"
@@ -76,16 +79,15 @@ continue_merge () {
                then
                        printf "Committed: %0${prec}d " $msgnum
                fi
+               echo "$cmt $(git rev-parse HEAD^0)" >> "$dotest/rewritten"
        else
                if test -z "$GIT_QUIET"
                then
                        printf "Already applied: %0${prec}d " $msgnum
                fi
        fi
-       if test -z "$GIT_QUIET"
-       then
-               git rev-list --pretty=oneline -1 "$cmt" | sed -e 's/^[^ ]* //'
-       fi
+       test -z "$GIT_QUIET" &&
+       GIT_PAGER='' git log --format=%s -1 "$cmt"
 
        prev_head=`git rev-parse HEAD^0`
        # save the resulting commit so we can read-tree on it later
@@ -118,7 +120,7 @@ call_merge () {
                return
                ;;
        1)
-               git rerere
+               git rerere $allow_rerere_autoupdate
                die "$RESOLVEMSG"
                ;;
        2)
@@ -150,6 +152,11 @@ move_to_original_branch () {
 
 finish_rb_merge () {
        move_to_original_branch
+       git notes copy --for-rewrite=rebase < "$dotest"/rewritten
+       if test -x "$GIT_DIR"/hooks/post-rewrite &&
+               test -s "$dotest"/rewritten; then
+               "$GIT_DIR"/hooks/post-rewrite rebase < "$dotest"/rewritten
+       fi
        rm -r "$dotest"
        say All done.
 }
@@ -333,6 +340,9 @@ do
                        ;;
                esac
                ;;
+       --ignore-whitespace)
+               git_am_opt="$git_am_opt $1"
+               ;;
        --committer-date-is-author-date|--ignore-date)
                git_am_opt="$git_am_opt $1"
                force_rebase=t
@@ -343,9 +353,12 @@ do
        --root)
                rebase_root=t
                ;;
-       -f|--f|--fo|--for|--forc|force|--force-r|--force-re|--force-reb|--force-reba|--force-rebas|--force-rebase)
+       -f|--f|--fo|--for|--forc|force|--force-r|--force-re|--force-reb|--force-reba|--force-rebas|--force-rebase|--no-ff)
                force_rebase=t
                ;;
+       --rerere-autoupdate|--no-rerere-autoupdate)
+               allow_rerere_autoupdate="$1"
+               ;;
        -*)
                usage
                ;;
@@ -382,8 +395,10 @@ else
 fi
 
 # The tree must be really really clean.
-if ! git update-index --ignore-submodules --refresh; then
-       die "cannot rebase: you have unstaged changes"
+if ! git update-index --ignore-submodules --refresh > /dev/null; then
+       echo >&2 "cannot rebase: you have unstaged changes"
+       git diff-files --name-status -r --ignore-submodules -- >&2
+       exit 1
 fi
 diff=$(git diff-index --cached --name-status -r --ignore-submodules HEAD --)
 case "$diff" in
@@ -412,7 +427,27 @@ fi
 
 # Make sure the branch to rebase onto is valid.
 onto_name=${newbase-"$upstream_name"}
-onto=$(git rev-parse --verify "${onto_name}^0") || exit
+case "$onto_name" in
+*...*)
+       if      left=${onto_name%...*} right=${onto_name#*...} &&
+               onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD})
+       then
+               case "$onto" in
+               ?*"$LF"?*)
+                       die "$onto_name: there are more than one merge bases"
+                       ;;
+               '')
+                       die "$onto_name: there is no merge base"
+                       ;;
+               esac
+       else
+               die "$onto_name: there is no merge base"
+       fi
+       ;;
+*)
+       onto=$(git rev-parse --verify "${onto_name}^0") || exit
+       ;;
+esac
 
 # If a hook exists, give it a chance to interrupt
 run_pre_rebase_hook "$upstream_arg" "$@"
@@ -462,7 +497,7 @@ orig_head=$branch
 mb=$(git merge-base "$onto" "$branch")
 if test "$upstream" = "$onto" && test "$mb" = "$onto" &&
        # linear history?
-       ! (git rev-list --parents "$onto".."$branch" | grep " .* ") > /dev/null
+       ! (git rev-list --parents "$onto".."$branch" | sane_grep " .* ") > /dev/null
 then
        if test -z "$force_rebase"
        then
@@ -491,7 +526,7 @@ then
 fi
 
 # If the $onto is a proper descendant of the tip of the branch, then
-# we just fast forwarded.
+# we just fast-forwarded.
 if test "$mb" = "$branch"
 then
        say "Fast-forwarded $branch_name to $onto_name."