Merge branch 'cb/mergetool'

* cb/mergetool:
mergetool: Don't keep temporary merge files unless told to
mergetool: Add prompt to continue after failing to merge a file
Add -y/--no-prompt option to mergetool
Fix some tab/space inconsistencies in git-mergetool.sh

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 52786c7df5eb902cf97fee165ceb25e3c4763e9e..7408bb2d34441dede61718e5d77dd08e26de3731 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1044,6 +1044,16 @@ mergetool.keepBackup::
        is set to `false` then this file is not preserved.  Defaults to
        `true` (i.e. keep the backup files).
 
+mergetool.keepTemporaries::
+       When invoking a custom merge tool, git uses a set of temporary
+       files to pass to the tool. If the tool returns an error and this
+       variable is set to `true`, then these temporary files will be
+       preserved, otherwise they will be removed after the tool has
+       exited. Defaults to `false`.
+
+mergetool.prompt::
+       Prompt before each invocation of the merge resolution program.
+
 pack.window::
        The size of the window used by linkgit:git-pack-objects[1] when no
        window size is given on the command line. Defaults to 10.

diff --git a/Documentation/git-mergetool.txt b/Documentation/git-mergetool.txt
index 602e7c6d3b497aa4f891915305d507ae88910a54..4c0ffec507185dfe1e88683e1a23066089571d2c 100644 (file)
--- a/Documentation/git-mergetool.txt
+++ b/Documentation/git-mergetool.txt
@@ -7,7 +7,7 @@ git-mergetool - Run merge conflict resolution tools to resolve merge conflicts
 
 SYNOPSIS
 --------
-'git mergetool' [--tool=<tool>] [<file>]...
+'git mergetool' [--tool=<tool>] [-y|--no-prompt|--prompt] [<file>]...
 
 DESCRIPTION
 -----------
@@ -60,6 +60,15 @@ variable `mergetool.<tool>.trustExitCode` can be set to `true`.
 Otherwise, 'git-mergetool' will prompt the user to indicate the
 success of the resolution after the custom tool has exited.
 
+-y or --no-prompt::
+       Don't prompt before each invocation of the merge resolution
+       program.
+
+--prompt::
+       Prompt before each invocation of the merge resolution program.
+       This is the default behaviour; the option is provided to
+       override any configuration settings.
+
 Author
 ------
 Written by Theodore Y Ts'o <tytso@mit.edu>

diff --git a/git-mergetool.sh b/git-mergetool.sh
index d4078a6affd9b4c1fa52e6dba0fe6c151fa452dc..b2d53752ae49ff2c8323836e2907de584cb1e979 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
@@ -137,7 +137,7 @@ merge_file () {
        else
            echo "$MERGED: file does not need merging"
        fi
-       exit 1
+       return 1
     fi
 
     ext="$$$(expr "$MERGED" : '.*\(\.[^/]*\)$')"
@@ -176,8 +176,10 @@ merge_file () {
     echo "Normal merge conflict for '$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 "$merge_tool" in
        kdiff3)
@@ -267,7 +269,12 @@ merge_file () {
     if test "$status" -ne 0; then
        echo "merge of $MERGED failed" 1>&2
        mv -- "$BACKUP" "$MERGED"
-       exit 1
+
+       if test "$merge_keep_temporaries" = "false"; then
+           cleanup_temp_files
+       fi
+
+       return 1
     fi
 
     if test "$merge_keep_backup" = "true"; then
@@ -278,8 +285,11 @@ 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 +305,12 @@ do
                    shift ;;
            esac
            ;;
+       -y|--no-prompt)
+           prompt=false
+           ;;
+       --prompt)
+           prompt=true
+           ;;
        --)
            shift
            break
@@ -341,6 +357,22 @@ 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 "$merge_tool"; then
     merge_tool=`git config merge.tool`
@@ -389,6 +421,7 @@ else
     init_merge_tool_path "$merge_tool"
 
     merge_keep_backup="$(git config --bool merge.keepBackup || echo true)"
+    merge_keep_temporaries="$(git config --bool mergetool.keepTemporaries || echo false)"
 
     if test -z "$merge_tool_cmd" && ! type "$merge_tool_path" > /dev/null 2>&1; then
         echo "The merge tool $merge_tool is not available as '$merge_tool_path'"
@@ -400,27 +433,44 @@ 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