diff.c: Reuse the pprint_rename function for diff --summary output.

diff --git a/git-rebase.sh b/git-rebase.sh
index 413636e2086a8c7274c0bc4cb04037f2e07f588e..b51d19d12e6d5a108f13c4ec60c5f5a6e560ef47 100755 (executable)
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2005 Junio C Hamano.
 #
 
-USAGE='[--onto <newbase>] <upstream> [<branch>]'
+USAGE='[-v] [--onto <newbase>] <upstream> [<branch>]'
 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>
@@ -27,7 +27,12 @@ Example:       git-rebase master~1 topic
        /                   -->           /
   D---E---F---G master          D---E---F---G master
 '
+
+SUBDIRECTORY_OK=Yes
 . git-sh-setup
+set_reflog_action rebase
+require_work_tree
+cd_to_toplevel
 
 RESOLVEMSG="
 When you have resolved this problem run \"git rebase --continue\".
@@ -39,6 +44,8 @@ strategy=recursive
 do_merge=
 dotest=$GIT_DIR/.dotest-merge
 prec=4
+verbose=
+git_am_opt=
 
 continue_merge () {
        test -n "$prev_head" || die "prev_head must be defined"
@@ -79,10 +86,18 @@ continue_merge () {
 call_merge () {
        cmt="$(cat $dotest/cmt.$1)"
        echo "$cmt" > "$dotest/current"
-       git-merge-$strategy "$cmt^" -- HEAD "$cmt"
+       hd=$(git-rev-parse --verify HEAD)
+       cmt_name=$(git-symbolic-ref HEAD)
+       msgnum=$(cat $dotest/msgnum)
+       end=$(cat $dotest/end)
+       eval GITHEAD_$cmt='"${cmt_name##refs/heads/}~$(($end - $msgnum))"'
+       eval GITHEAD_$hd='"$(cat $dotest/onto_name)"'
+       export GITHEAD_$cmt GITHEAD_$hd
+       git-merge-$strategy "$cmt^" -- "$hd" "$cmt"
        rv=$?
        case "$rv" in
        0)
+               unset GITHEAD_$cmt GITHEAD_$hd
                return
                ;;
        1)
@@ -131,13 +146,16 @@ do
                        finish_rb_merge
                        exit
                fi
-               git am --resolved --3way --resolvemsg="$RESOLVEMSG" \
-                       --reflog-action=rebase
+               git am --resolved --3way --resolvemsg="$RESOLVEMSG"
                exit
                ;;
        --skip)
                if test -d "$dotest"
                then
+                       if test -d "$GIT_DIR/rr-cache"
+                       then
+                               git-rerere clear
+                       fi
                        prev_head="`cat $dotest/prev_head`"
                        end="`cat $dotest/end`"
                        msgnum="`cat $dotest/msgnum`"
@@ -151,11 +169,14 @@ do
                        finish_rb_merge
                        exit
                fi
-               git am -3 --skip --resolvemsg="$RESOLVEMSG" \
-                       --reflog-action=rebase
+               git am -3 --skip --resolvemsg="$RESOLVEMSG"
                exit
                ;;
        --abort)
+               if test -d "$GIT_DIR/rr-cache"
+               then
+                       git-rerere clear
+               fi
                if test -d "$dotest"
                then
                        rm -r "$dotest"
@@ -190,6 +211,13 @@ do
                esac
                do_merge=t
                ;;
+       -v|--verbose)
+               verbose=t
+               ;;
+       -C*)
+               git_am_opt=$1
+               shift
+               ;;
        -*)
                usage
                ;;
@@ -226,7 +254,8 @@ fi
 git-update-index --refresh || exit
 diff=$(git-diff-index --cached --name-status -r HEAD)
 case "$diff" in
-?*)    echo "$diff"
+?*)    echo "cannot rebase: your index is not up-to-date"
+       echo "$diff"
        exit 1
        ;;
 esac
@@ -252,8 +281,12 @@ case "$#" in
        git-checkout "$2" || usage
        ;;
 *)
-       branch_name=`git symbolic-ref HEAD` || die "No current branch"
-       branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'`
+       if branch_name=`git symbolic-ref -q HEAD`
+       then
+               branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'`
+       else
+               branch_name=HEAD ;# detached
+       fi
        ;;
 esac
 branch=$(git-rev-parse --verify "${branch_name}^0") || exit
@@ -273,7 +306,14 @@ then
        exit 0
 fi
 
+if test -n "$verbose"
+then
+       echo "Changes from $mb to $onto:"
+       git-diff-tree --stat --summary "$mb" "$onto"
+fi
+
 # Rewind the head to "$onto"; this saves our current head in ORIG_HEAD.
+echo "First, rewinding head to replay your work on top of it..."
 git-reset --hard "$onto"
 
 # If the $onto is a proper descendant of the tip of the branch, then
@@ -287,25 +327,16 @@ fi
 if test -z "$do_merge"
 then
        git-format-patch -k --stdout --full-index --ignore-if-in-upstream "$upstream"..ORIG_HEAD |
-       git am --binary -3 -k --resolvemsg="$RESOLVEMSG" \
-               --reflog-action=rebase
+       git am $git_am_opt --binary -3 -k --resolvemsg="$RESOLVEMSG"
        exit $?
 fi
 
-if test "@@NO_PYTHON@@" && test "$strategy" = "recursive-old"
-then
-       die 'The recursive-old merge strategy is written in Python,
-which this installation of git was not configured with.  Please consider
-a different merge strategy (e.g. recursive, resolve, or stupid)
-or install Python and git with Python support.'
-
-fi
-
 # start doing a rebase with git-merge
 # this is rename-aware if the recursive (default) strategy is used
 
 mkdir -p "$dotest"
 echo "$onto" > "$dotest/onto"
+echo "$onto_name" > "$dotest/onto_name"
 prev_head=`git-rev-parse HEAD^0`
 echo "$prev_head" > "$dotest/prev_head"