[PATCH] mergetool--lib: add support for araxis merge

[David Aguilar <davvid@gmail.com>]

Araxis merge is now a built-in diff/merge tool.
This adds araxis to git-completion and updates
the documentation as well.

Signed-off-by: David Aguilar <davvid@gmail.com>
---

This patch is a result of the discussion on the msysgit list:

http://groups.google.com/group/msysgit/browse_thread/thread/fa353fa2240594d7

'compare' is the command-line utility that is provided
on MacOS.  Users on other platforms may have to manually
set their mergetool.araxis.path.


 Documentation/git-difftool.txt         |    2 +-
 Documentation/git-mergetool.txt        |    2 +-
 Documentation/merge-config.txt         |    2 +-
 contrib/completion/git-completion.bash |    2 +-
 git-mergetool--lib.sh                  |   24 ++++++++++++++++++++++--
 5 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/Documentation/git-difftool.txt b/Documentation/git-difftool.txt
index 15b247b..96a6c51 100644
--- a/Documentation/git-difftool.txt
+++ b/Documentation/git-difftool.txt
@@ -31,7 +31,7 @@ OPTIONS
 	Use the diff tool specified by <tool>.
 	Valid merge tools are:
 	kdiff3, kompare, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff,
-	ecmerge, diffuse and opendiff
+	ecmerge, diffuse, opendiff and araxis.
 +
 If a diff tool is not specified, 'git-difftool'
 will use the configuration variable `diff.tool`.  If the
diff --git a/Documentation/git-mergetool.txt b/Documentation/git-mergetool.txt
index ff9700d..68ed6c0 100644
--- a/Documentation/git-mergetool.txt
+++ b/Documentation/git-mergetool.txt
@@ -27,7 +27,7 @@ OPTIONS
 	Use the merge resolution program specified by <tool>.
 	Valid merge tools are:
 	kdiff3, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff, ecmerge,
-	diffuse, tortoisemerge and opendiff
+	diffuse, tortoisemerge, opendiff and araxis.
 +
 If a merge resolution program is not specified, 'git-mergetool'
 will use the configuration variable `merge.tool`.  If the
diff --git a/Documentation/merge-config.txt b/Documentation/merge-config.txt
index 4832bc7..c0f96e7 100644
--- a/Documentation/merge-config.txt
+++ b/Documentation/merge-config.txt
@@ -23,7 +23,7 @@ merge.tool::
 	Controls which merge resolution program is used by
 	linkgit:git-mergetool[1].  Valid built-in values are: "kdiff3",
 	"tkdiff", "meld", "xxdiff", "emerge", "vimdiff", "gvimdiff",
-	"diffuse", "ecmerge", "tortoisemerge", and
+	"diffuse", "ecmerge", "tortoisemerge", "araxis", and
 	"opendiff".  Any other value is treated is custom merge tool
 	and there must be a corresponding mergetool.<tool>.cmd option.
 
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 1a90cb8..dfd128b 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -911,7 +911,7 @@ _git_diff ()
 }
 
 __git_mergetools_common="diffuse ecmerge emerge kdiff3 meld opendiff
-			tkdiff vimdiff gvimdiff xxdiff
+			tkdiff vimdiff gvimdiff xxdiff araxis
 "
 
 _git_difftool ()
diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index a16a279..f3c63ef 100644
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -18,6 +18,9 @@ translate_merge_tool_path () {
 	emerge)
 		echo emacs
 		;;
+	araxis)
+		echo compare
+		;;
 	*)
 		echo "$1"
 		;;
@@ -43,7 +46,7 @@ check_unchanged () {
 valid_tool () {
 	case "$1" in
 	kdiff3 | tkdiff | xxdiff | meld | opendiff | \
-	emerge | vimdiff | gvimdiff | ecmerge | diffuse)
+	emerge | vimdiff | gvimdiff | ecmerge | diffuse | araxis)
 		;; # happy
 	tortoisemerge)
 		if ! merge_mode; then
@@ -263,6 +266,23 @@ run_merge_tool () {
 			status=1
 		fi
 		;;
+	araxis)
+		if merge_mode; then
+			if $base_present; then
+				"$merge_tool_path" -wait -merge -3 -a1 \
+					"$BASE" "$LOCAL" "$REMOTE" "$MERGED" \
+					>/dev/null 2>&1
+			else
+				"$merge_tool_path" -wait -2 \
+					"$LOCAL" "$REMOTE" "$MERGED" \
+					>/dev/null 2>&1
+			fi
+			check_unchanged
+		else
+			"$merge_tool_path" -wait -2 "$LOCAL" "$REMOTE" \
+				>/dev/null 2>&1
+		fi
+		;;
 	*)
 		merge_tool_cmd="$(get_merge_tool_cmd "$1")"
 		if test -z "$merge_tool_cmd"; then
@@ -302,7 +322,7 @@ guess_merge_tool () {
 		else
 			tools="opendiff kdiff3 tkdiff xxdiff meld $tools"
 		fi
-		tools="$tools gvimdiff diffuse ecmerge"
+		tools="$tools gvimdiff diffuse ecmerge araxis"
 	fi
 	if echo "${VISUAL:-$EDITOR}" | grep emacs > /dev/null 2>&1; then
 		# $EDITOR is emacs so add emerge as a candidate
-- 
1.6.3.rc4