cherry-pick: handle root commits with external strategies

diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index b5e1943b1d166b543998c80579c65e82de36516a..4db9212331259664732f031438b7b87b7a10244f 100644 (file)
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -10,17 +10,20 @@ merge_mode() {
 
 translate_merge_tool_path () {
        case "$1" in
-       vimdiff)
-               echo vim
+       araxis)
+               echo compare
                ;;
-       gvimdiff)
-               echo gvim
+       bc3)
+               echo bcompare
                ;;
        emerge)
                echo emacs
                ;;
-       araxis)
-               echo compare
+       gvimdiff|gvimdiff2)
+               echo gvim
+               ;;
+       vimdiff|vimdiff2)
+               echo vim
                ;;
        *)
                echo "$1"
@@ -46,16 +49,16 @@ check_unchanged () {
 
 valid_tool () {
        case "$1" in
-       kdiff3 | tkdiff | xxdiff | meld | opendiff | \
-       emerge | vimdiff | gvimdiff | ecmerge | diffuse | araxis | p4merge)
+       araxis | bc3 | diffuse | ecmerge | emerge | gvimdiff | gvimdiff2 | \
+       kdiff3 | meld | opendiff | p4merge | tkdiff | vimdiff | vimdiff2 | xxdiff)
                ;; # happy
-       tortoisemerge)
-               if ! merge_mode; then
+       kompare)
+               if ! diff_mode; then
                        return 1
                fi
                ;;
-       kompare)
-               if ! diff_mode; then
+       tortoisemerge)
+               if ! merge_mode; then
                        return 1
                fi
                ;;
@@ -88,133 +91,153 @@ run_merge_tool () {
        status=0
 
        case "$1" in
-       kdiff3)
+       araxis)
                if merge_mode; then
+                       touch "$BACKUP"
                        if $base_present; then
-                               ("$merge_tool_path" --auto \
-                                       --L1 "$MERGED (Base)" \
-                                       --L2 "$MERGED (Local)" \
-                                       --L3 "$MERGED (Remote)" \
-                                       -o "$MERGED" \
-                                       "$BASE" "$LOCAL" "$REMOTE" \
-                               > /dev/null 2>&1)
+                               "$merge_tool_path" -wait -merge -3 -a1 \
+                                       "$BASE" "$LOCAL" "$REMOTE" "$MERGED" \
+                                       >/dev/null 2>&1
                        else
-                               ("$merge_tool_path" --auto \
-                                       --L1 "$MERGED (Local)" \
-                                       --L2 "$MERGED (Remote)" \
-                                       -o "$MERGED" \
-                                       "$LOCAL" "$REMOTE" \
-                               > /dev/null 2>&1)
+                               "$merge_tool_path" -wait -2 \
+                                       "$LOCAL" "$REMOTE" "$MERGED" \
+                                       >/dev/null 2>&1
                        fi
-                       status=$?
+                       check_unchanged
                else
-                       ("$merge_tool_path" --auto \
-                               --L1 "$MERGED (A)" \
-                               --L2 "$MERGED (B)" "$LOCAL" "$REMOTE" \
-                       > /dev/null 2>&1)
+                       "$merge_tool_path" -wait -2 "$LOCAL" "$REMOTE" \
+                               >/dev/null 2>&1
                fi
                ;;
-       kompare)
-               "$merge_tool_path" "$LOCAL" "$REMOTE"
-               ;;
-       tkdiff)
+       bc3)
                if merge_mode; then
+                       touch "$BACKUP"
                        if $base_present; then
-                               "$merge_tool_path" -a "$BASE" \
-                                       -o "$MERGED" "$LOCAL" "$REMOTE"
+                               "$merge_tool_path" "$LOCAL" "$REMOTE" "$BASE" \
+                                       -mergeoutput="$MERGED"
                        else
-                               "$merge_tool_path" \
-                                       -o "$MERGED" "$LOCAL" "$REMOTE"
+                               "$merge_tool_path" "$LOCAL" "$REMOTE" \
+                                       -mergeoutput="$MERGED"
                        fi
-                       status=$?
+                       check_unchanged
                else
                        "$merge_tool_path" "$LOCAL" "$REMOTE"
                fi
                ;;
-       p4merge)
+       diffuse)
                if merge_mode; then
-                   touch "$BACKUP"
+                       touch "$BACKUP"
                        if $base_present; then
-                               "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" "$MERGED"
+                               "$merge_tool_path" \
+                                       "$LOCAL" "$MERGED" "$REMOTE" \
+                                       "$BASE" | cat
                        else
-                               "$merge_tool_path" "$LOCAL" "$LOCAL" "$REMOTE" "$MERGED"
+                               "$merge_tool_path" \
+                                       "$LOCAL" "$MERGED" "$REMOTE" | cat
                        fi
                        check_unchanged
                else
-                       "$merge_tool_path" "$LOCAL" "$REMOTE"
+                       "$merge_tool_path" "$LOCAL" "$REMOTE" | cat
                fi
                ;;
-       meld)
+       ecmerge)
                if merge_mode; then
                        touch "$BACKUP"
-                       "$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE"
+                       if $base_present; then
+                               "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" \
+                                       --default --mode=merge3 --to="$MERGED"
+                       else
+                               "$merge_tool_path" "$LOCAL" "$REMOTE" \
+                                       --default --mode=merge2 --to="$MERGED"
+                       fi
                        check_unchanged
                else
-                       "$merge_tool_path" "$LOCAL" "$REMOTE"
+                       "$merge_tool_path" --default --mode=diff2 \
+                               "$LOCAL" "$REMOTE"
                fi
                ;;
-       diffuse)
+       emerge)
                if merge_mode; then
-                       touch "$BACKUP"
                        if $base_present; then
                                "$merge_tool_path" \
-                                       "$LOCAL" "$MERGED" "$REMOTE" \
-                                       "$BASE" | cat
+                                       -f emerge-files-with-ancestor-command \
+                                       "$LOCAL" "$REMOTE" "$BASE" \
+                                       "$(basename "$MERGED")"
                        else
                                "$merge_tool_path" \
-                                       "$LOCAL" "$MERGED" "$REMOTE" | cat
+                                       -f emerge-files-command \
+                                       "$LOCAL" "$REMOTE" \
+                                       "$(basename "$MERGED")"
                        fi
-                       check_unchanged
+                       status=$?
                else
-                       "$merge_tool_path" "$LOCAL" "$REMOTE" | cat
+                       "$merge_tool_path" -f emerge-files-command \
+                               "$LOCAL" "$REMOTE"
                fi
                ;;
-       vimdiff)
+       gvimdiff|vimdiff)
                if merge_mode; then
                        touch "$BACKUP"
-                       "$merge_tool_path" -d -c "wincmd l" \
-                               "$LOCAL" "$MERGED" "$REMOTE"
+                       if $base_present; then
+                               "$merge_tool_path" -f -d -c "wincmd J" \
+                                       "$MERGED" "$LOCAL" "$BASE" "$REMOTE"
+                       else
+                               "$merge_tool_path" -f -d -c "wincmd l" \
+                                       "$LOCAL" "$MERGED" "$REMOTE"
+                       fi
                        check_unchanged
                else
-                       "$merge_tool_path" -d -c "wincmd l" \
+                       "$merge_tool_path" -R -f -d -c "wincmd l" \
                                "$LOCAL" "$REMOTE"
                fi
                ;;
-       gvimdiff)
+       gvimdiff2|vimdiff2)
                if merge_mode; then
                        touch "$BACKUP"
-                       "$merge_tool_path" -d -c "wincmd l" -f \
+                       "$merge_tool_path" -f -d -c "wincmd l" \
                                "$LOCAL" "$MERGED" "$REMOTE"
                        check_unchanged
                else
-                       "$merge_tool_path" -d -c "wincmd l" -f \
+                       "$merge_tool_path" -R -f -d -c "wincmd l" \
                                "$LOCAL" "$REMOTE"
                fi
                ;;
-       xxdiff)
+       kdiff3)
                if merge_mode; then
-                       touch "$BACKUP"
                        if $base_present; then
-                               "$merge_tool_path" -X --show-merged-pane \
-                                       -R 'Accel.SaveAsMerged: "Ctrl-S"' \
-                                       -R 'Accel.Search: "Ctrl+F"' \
-                                       -R 'Accel.SearchForward: "Ctrl-G"' \
-                                       --merged-file "$MERGED" \
-                                       "$LOCAL" "$BASE" "$REMOTE"
+                               ("$merge_tool_path" --auto \
+                                       --L1 "$MERGED (Base)" \
+                                       --L2 "$MERGED (Local)" \
+                                       --L3 "$MERGED (Remote)" \
+                                       -o "$MERGED" \
+                                       "$BASE" "$LOCAL" "$REMOTE" \
+                               > /dev/null 2>&1)
                        else
-                               "$merge_tool_path" -X $extra \
-                                       -R 'Accel.SaveAsMerged: "Ctrl-S"' \
-                                       -R 'Accel.Search: "Ctrl+F"' \
-                                       -R 'Accel.SearchForward: "Ctrl-G"' \
-                                       --merged-file "$MERGED" \
-                                       "$LOCAL" "$REMOTE"
+                               ("$merge_tool_path" --auto \
+                                       --L1 "$MERGED (Local)" \
+                                       --L2 "$MERGED (Remote)" \
+                                       -o "$MERGED" \
+                                       "$LOCAL" "$REMOTE" \
+                               > /dev/null 2>&1)
                        fi
+                       status=$?
+               else
+                       ("$merge_tool_path" --auto \
+                               --L1 "$MERGED (A)" \
+                               --L2 "$MERGED (B)" "$LOCAL" "$REMOTE" \
+                       > /dev/null 2>&1)
+               fi
+               ;;
+       kompare)
+               "$merge_tool_path" "$LOCAL" "$REMOTE"
+               ;;
+       meld)
+               if merge_mode; then
+                       touch "$BACKUP"
+                       "$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE"
                        check_unchanged
                else
-                       "$merge_tool_path" \
-                               -R 'Accel.Search: "Ctrl+F"' \
-                               -R 'Accel.SearchForward: "Ctrl-G"' \
-                               "$LOCAL" "$REMOTE"
+                       "$merge_tool_path" "$LOCAL" "$REMOTE"
                fi
                ;;
        opendiff)
@@ -233,39 +256,28 @@ run_merge_tool () {
                        "$merge_tool_path" "$LOCAL" "$REMOTE" | cat
                fi
                ;;
-       ecmerge)
+       p4merge)
                if merge_mode; then
                        touch "$BACKUP"
-                       if $base_present; then
-                               "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" \
-                                       --default --mode=merge3 --to="$MERGED"
-                       else
-                               "$merge_tool_path" "$LOCAL" "$REMOTE" \
-                                       --default --mode=merge2 --to="$MERGED"
-                       fi
+                       $base_present || >"$BASE"
+                       "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" "$MERGED"
                        check_unchanged
                else
-                       "$merge_tool_path" --default --mode=diff2 \
-                               "$LOCAL" "$REMOTE"
+                       "$merge_tool_path" "$LOCAL" "$REMOTE"
                fi
                ;;
-       emerge)
+       tkdiff)
                if merge_mode; then
                        if $base_present; then
-                               "$merge_tool_path" \
-                                       -f emerge-files-with-ancestor-command \
-                                       "$LOCAL" "$REMOTE" "$BASE" \
-                                       "$(basename "$MERGED")"
+                               "$merge_tool_path" -a "$BASE" \
+                                       -o "$MERGED" "$LOCAL" "$REMOTE"
                        else
                                "$merge_tool_path" \
-                                       -f emerge-files-command \
-                                       "$LOCAL" "$REMOTE" \
-                                       "$(basename "$MERGED")"
+                                       -o "$MERGED" "$LOCAL" "$REMOTE"
                        fi
                        status=$?
                else
-                       "$merge_tool_path" -f emerge-files-command \
-                               "$LOCAL" "$REMOTE"
+                       "$merge_tool_path" "$LOCAL" "$REMOTE"
                fi
                ;;
        tortoisemerge)
@@ -280,22 +292,30 @@ run_merge_tool () {
                        status=1
                fi
                ;;
-       araxis)
+       xxdiff)
                if merge_mode; then
                        touch "$BACKUP"
                        if $base_present; then
-                               "$merge_tool_path" -wait -merge -3 -a1 \
-                                       "$BASE" "$LOCAL" "$REMOTE" "$MERGED" \
-                                       >/dev/null 2>&1
+                               "$merge_tool_path" -X --show-merged-pane \
+                                       -R 'Accel.SaveAsMerged: "Ctrl-S"' \
+                                       -R 'Accel.Search: "Ctrl+F"' \
+                                       -R 'Accel.SearchForward: "Ctrl-G"' \
+                                       --merged-file "$MERGED" \
+                                       "$LOCAL" "$BASE" "$REMOTE"
                        else
-                               "$merge_tool_path" -wait -2 \
-                                       "$LOCAL" "$REMOTE" "$MERGED" \
-                                       >/dev/null 2>&1
+                               "$merge_tool_path" -X $extra \
+                                       -R 'Accel.SaveAsMerged: "Ctrl-S"' \
+                                       -R 'Accel.Search: "Ctrl+F"' \
+                                       -R 'Accel.SearchForward: "Ctrl-G"' \
+                                       --merged-file "$MERGED" \
+                                       "$LOCAL" "$REMOTE"
                        fi
                        check_unchanged
                else
-                       "$merge_tool_path" -wait -2 "$LOCAL" "$REMOTE" \
-                               >/dev/null 2>&1
+                       "$merge_tool_path" \
+                               -R 'Accel.Search: "Ctrl+F"' \
+                               -R 'Accel.SearchForward: "Ctrl-G"' \
+                               "$LOCAL" "$REMOTE"
                fi
                ;;
        *)
@@ -337,7 +357,7 @@ guess_merge_tool () {
                else
                        tools="opendiff kdiff3 tkdiff xxdiff meld $tools"
                fi
-               tools="$tools gvimdiff diffuse ecmerge p4merge araxis"
+               tools="$tools gvimdiff diffuse ecmerge p4merge araxis bc3"
        fi
        case "${VISUAL:-$EDITOR}" in
        *vim*)