[PATCH] mergetool: avoid misleading message "Resetting to default..."

[Steffen Prohaska <prohaska@zib.de>]

If no mergetool is configured in the configuration variable
merge.tool the resetting message should not be printed.

This is fixed. The message is only printed if a tool is configured
but the entry in merge.tool is invalid.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
---
 git-mergetool.sh |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/git-mergetool.sh b/git-mergetool.sh
index 94511f9..a68b403 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -334,7 +334,7 @@ init_merge_tool_path() {
 
 if test -z "$merge_tool"; then
     merge_tool=`git config merge.tool`
-    if ! valid_tool "$merge_tool"; then
+    if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then
 	    echo >&2 "git config option merge.tool set to unknown tool: $merge_tool"
 	    echo >&2 "Resetting to default..."
 	    unset merge_tool
-- 
1.5.3.4.222.g2830