mergetool: Add prompt to continue after failing to merge a file

diff --git a/git-mergetool.sh b/git-mergetool.sh
index fcdec4a504acd5681e0695fb9657d6a1cd513ab0..5144971647c177533bfe6cdd1be974bd60555728 100755 (executable)
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -8,7 +8,7 @@
 # at the discretion of Junio C Hamano.
 #
 
-USAGE='[--tool=tool] [file to merge] ...'
+USAGE='[--tool=tool] [-y|--no-prompt|--prompt] [file to merge] ...'
 SUBDIRECTORY_OK=Yes
 OPTIONS_SPEC=
 . git-sh-setup
@@ -70,16 +70,16 @@ resolve_symlink_merge () {
                git checkout-index -f --stage=2 -- "$MERGED"
                git add -- "$MERGED"
                cleanup_temp_files --save-backup
-               return
+               return 0
                ;;
            [rR]*)
                git checkout-index -f --stage=3 -- "$MERGED"
                git add -- "$MERGED"
                cleanup_temp_files --save-backup
-               return
+               return 0
                ;;
            [aA]*)
-               exit 1
+               return 1
                ;;
            esac
        done
@@ -97,15 +97,15 @@ resolve_deleted_merge () {
            [mMcC]*)
                git add -- "$MERGED"
                cleanup_temp_files --save-backup
-               return
+               return 0
                ;;
            [dD]*)
                git rm -- "$MERGED" > /dev/null
                cleanup_temp_files
-               return
+               return 0
                ;;
            [aA]*)
-               exit 1
+               return 1
                ;;
            esac
        done
@@ -137,14 +137,14 @@ merge_file () {
        else
            echo "$MERGED: file does not need merging"
        fi
-       exit 1
+       return 1
     fi
 
     ext="$$$(expr "$MERGED" : '.*\(\.[^/]*\)$')"
-    BACKUP="$MERGED.BACKUP.$ext"
-    LOCAL="$MERGED.LOCAL.$ext"
-    REMOTE="$MERGED.REMOTE.$ext"
-    BASE="$MERGED.BASE.$ext"
+    BACKUP="./$MERGED.BACKUP.$ext"
+    LOCAL="./$MERGED.LOCAL.$ext"
+    REMOTE="./$MERGED.REMOTE.$ext"
+    BASE="./$MERGED.BASE.$ext"
 
     mv -- "$MERGED" "$BACKUP"
     cp -- "$BACKUP" "$MERGED"
@@ -176,36 +176,38 @@ merge_file () {
     echo "Normal merge conflict for '$MERGED':"
     describe_file "$local_mode" "local" "$LOCAL"
     describe_file "$remote_mode" "remote" "$REMOTE"
-    printf "Hit return to start merge resolution tool (%s): " "$merge_tool"
-    read ans
+    if "$prompt" = true; then
+       printf "Hit return to start merge resolution tool (%s): " "$merge_tool"
+       read ans
+    fi
 
     case "$merge_tool" in
        kdiff3)
            if base_present ; then
                ("$merge_tool_path" --auto --L1 "$MERGED (Base)" --L2 "$MERGED (Local)" --L3 "$MERGED (Remote)" \
-                   -o "$MERGED" -- "$BASE" "$LOCAL" "$REMOTE" > /dev/null 2>&1)
+                   -o "$MERGED" "$BASE" "$LOCAL" "$REMOTE" > /dev/null 2>&1)
            else
                ("$merge_tool_path" --auto --L1 "$MERGED (Local)" --L2 "$MERGED (Remote)" \
-                   -o "$MERGED" -- "$LOCAL" "$REMOTE" > /dev/null 2>&1)
+                   -o "$MERGED" "$LOCAL" "$REMOTE" > /dev/null 2>&1)
            fi
            status=$?
            ;;
        tkdiff)
            if base_present ; then
-               "$merge_tool_path" -a "$BASE" -o "$MERGED" -- "$LOCAL" "$REMOTE"
+               "$merge_tool_path" -a "$BASE" -o "$MERGED" "$LOCAL" "$REMOTE"
            else
-               "$merge_tool_path" -o "$MERGED" -- "$LOCAL" "$REMOTE"
+               "$merge_tool_path" -o "$MERGED" "$LOCAL" "$REMOTE"
            fi
            status=$?
            ;;
        meld|vimdiff)
            touch "$BACKUP"
-           "$merge_tool_path" -- "$LOCAL" "$MERGED" "$REMOTE"
+           "$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE"
            check_unchanged
            ;;
        gvimdiff)
            touch "$BACKUP"
-           "$merge_tool_path" -f -- "$LOCAL" "$MERGED" "$REMOTE"
+           "$merge_tool_path" -f "$LOCAL" "$MERGED" "$REMOTE"
            check_unchanged
            ;;
        xxdiff)
@@ -215,13 +217,13 @@ merge_file () {
                    -R 'Accel.SaveAsMerged: "Ctrl-S"' \
                    -R 'Accel.Search: "Ctrl+F"' \
                    -R 'Accel.SearchForward: "Ctrl-G"' \
-                   --merged-file "$MERGED" -- "$LOCAL" "$BASE" "$REMOTE"
+                   --merged-file "$MERGED" "$LOCAL" "$BASE" "$REMOTE"
            else
                "$merge_tool_path" -X --show-merged-pane \
                    -R 'Accel.SaveAsMerged: "Ctrl-S"' \
                    -R 'Accel.Search: "Ctrl+F"' \
                    -R 'Accel.SearchForward: "Ctrl-G"' \
-                   --merged-file "$MERGED" -- "$LOCAL" "$REMOTE"
+                   --merged-file "$MERGED" "$LOCAL" "$REMOTE"
            fi
            check_unchanged
            ;;
@@ -267,7 +269,7 @@ merge_file () {
     if test "$status" -ne 0; then
        echo "merge of $MERGED failed" 1>&2
        mv -- "$BACKUP" "$MERGED"
-       exit 1
+       return 1
     fi
 
     if test "$merge_keep_backup" = "true"; then
@@ -278,8 +280,11 @@ merge_file () {
 
     git add -- "$MERGED"
     cleanup_temp_files
+    return 0
 }
 
+prompt=$(git config --bool mergetool.prompt || echo true)
+
 while test $# != 0
 do
     case "$1" in
@@ -295,6 +300,12 @@ do
                    shift ;;
            esac
            ;;
+       -y|--no-prompt)
+           prompt=false
+           ;;
+       --prompt)
+           prompt=true
+           ;;
        --)
            break
            ;;
@@ -340,6 +351,22 @@ init_merge_tool_path() {
        fi
 }
 
+prompt_after_failed_merge() {
+    while true; do
+       printf "Continue merging other unresolved paths (y/n) ? "
+       read ans
+       case "$ans" in
+
+           [yY]*)
+               return 0
+               ;;
+
+           [nN]*)
+               return 1
+               ;;
+       esac
+    done
+}
 
 if test -z "$merge_tool"; then
     merge_tool=`git config merge.tool`
@@ -399,27 +426,44 @@ else
     fi
 fi
 
+last_status=0
+rollup_status=0
 
 if test $# -eq 0 ; then
-       files=`git ls-files -u | sed -e 's/^[^  ]*      //' | sort -u`
-       if test -z "$files" ; then
-               echo "No files need merging"
-               exit 0
+    files=`git ls-files -u | sed -e 's/^[^     ]*      //' | sort -u`
+    if test -z "$files" ; then
+       echo "No files need merging"
+       exit 0
+    fi
+    echo Merging the files: "$files"
+    git ls-files -u |
+    sed -e 's/^[^      ]*      //' |
+    sort -u |
+    while IFS= read i
+    do
+       if test $last_status -ne 0; then
+           prompt_after_failed_merge < /dev/tty || exit 1
        fi
-       echo Merging the files: "$files"
-       git ls-files -u |
-       sed -e 's/^[^   ]*      //' |
-       sort -u |
-       while IFS= read i
-       do
-               printf "\n"
-               merge_file "$i" < /dev/tty > /dev/tty
-       done
+       printf "\n"
+       merge_file "$i" < /dev/tty > /dev/tty
+       last_status=$?
+       if test $last_status -ne 0; then
+           rollup_status=1
+       fi
+    done
 else
-       while test $# -gt 0; do
-               printf "\n"
-               merge_file "$1"
-               shift
-       done
+    while test $# -gt 0; do
+       if test $last_status -ne 0; then
+           prompt_after_failed_merge || exit 1
+       fi
+       printf "\n"
+       merge_file "$1"
+       last_status=$?
+       if test $last_status -ne 0; then
+           rollup_status=1
+       fi
+       shift
+    done
 fi
-exit 0
+
+exit $rollup_status