[PATCH 1/2] mergetools: split config files for vim and gvim

[Tim Henigan <tim.henigan@gmail.com>]

In ae69fd0 (mergetool-lib: combine vimdiff and gvimdiff run blocks),
the config files for these two tools were combined since they were
nearly identical.  This remains true, but having a single config
file for both makes it difficult to test that each is installed
and capable of running.

This commit splits the two config files. Now 'vim' and 'gvim'
follow the pattern used by all the other diff/merge tools:
  - There is a single file per tool
  - To use the tool, 'diff.tool' (or other similar option) may be
    set to the exact name of the file.

Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
---

This series should apply cleanly on the current master, but it was
developed on top of the series that implements the 'difftool --dir-diff'
option (currently th/difftool-diffall branched from pu).

This patch does some cleanup needed to be compatible with the new
'--dir-diff' option for 'difftool'.

One side-effect of this change which may be a problem is that we
lose support for the 'vimdiff2' and 'gvimdiff2' tools that were
created in 0008669 (mergetool-lib: make the three-way diff the
default for vim/gvim).  The 2-panel options were not advertised in
any way, so I don't know if it is important to keep them.


 git-mergetool--lib.sh |    9 +--------
 mergetools/gvim       |   21 +++++++++++++++++++++
 mergetools/vim        |   41 +++++++++--------------------------------
 3 files changed, 31 insertions(+), 40 deletions(-)
 create mode 100644 mergetools/gvim

diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index ed630b2..89b16dc 100644
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -44,14 +44,7 @@ valid_tool () {
 }
 
 setup_tool () {
-	case "$1" in
-	vim*|gvim*)
-		tool=vim
-		;;
-	*)
-		tool="$1"
-		;;
-	esac
+	tool="$1"
 	mergetools="$(git --exec-path)/mergetools"
 
 	# Load the default definitions
diff --git a/mergetools/gvim b/mergetools/gvim
new file mode 100644
index 0000000..b746e6f
--- /dev/null
+++ b/mergetools/gvim
@@ -0,0 +1,21 @@
+diff_cmd () {
+	"$merge_tool_path" -R -f -d \
+		-c 'wincmd l' -c 'cd $GIT_PREFIX' "$LOCAL" "$REMOTE"
+}
+
+merge_cmd () {
+	touch "$BACKUP"
+	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
+}
+
+translate_merge_tool_path() {
+	echo gvim
+}
diff --git a/mergetools/vim b/mergetools/vim
index 619594a..6817708 100644
--- a/mergetools/vim
+++ b/mergetools/vim
@@ -1,44 +1,21 @@
 diff_cmd () {
-	case "$1" in
-	gvimdiff|vimdiff)
-		"$merge_tool_path" -R -f -d \
-			-c 'wincmd l' -c 'cd $GIT_PREFIX' "$LOCAL" "$REMOTE"
-		;;
-	gvimdiff2|vimdiff2)
-		"$merge_tool_path" -R -f -d \
-			-c 'wincmd l' -c 'cd $GIT_PREFIX' "$LOCAL" "$REMOTE"
-		;;
-	esac
+	"$merge_tool_path" -R -f -d \
+		-c 'wincmd l' -c 'cd $GIT_PREFIX' "$LOCAL" "$REMOTE"
 }
 
 merge_cmd () {
 	touch "$BACKUP"
-	case "$1" in
-	gvimdiff|vimdiff)
-		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
-		;;
-	gvimdiff2|vimdiff2)
+	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"
-		;;
-	esac
+	fi
 	check_unchanged
 }
 
 translate_merge_tool_path() {
-	case "$1" in
-	gvimdiff|gvimdiff2)
-		echo gvim
-		;;
-	vimdiff|vimdiff2)
-		echo vim
-		;;
-	esac
+	echo vim
 }
-- 
1.7.10.rc2.21.g8cb1a