[BROKEN NEXT] merge-recursive thinkofix

[Junio C Hamano <junkio@cox.net>]

The version I pushed out on 'next' has a serious breakage that
would affect merges to anybody who has 'merge.summary' or
'merge.tool' set.

Sorry for the gotcha --- here is a quickfix.

I'll be pushing out an updated 'next', hopefully shortly.

---

 merge-recursive.c |   14 ++++++--------
 1 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/merge-recursive.c b/merge-recursive.c
index ec8438b..96e461c 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -809,6 +809,9 @@ static int ll_ext_merge(const struct ll_merge_driver *fn,
 	int status, fd, i;
 	struct stat st;
 
+	if (fn->cmdline == NULL)
+		die("custom merge driver %s lacks command line.", fn->name);
+
 	result->ptr = NULL;
 	result->size = 0;
 	create_temp(orig, temp[0]);
@@ -879,7 +882,7 @@ static int read_merge_config(const char *var, const char *value)
 	 * especially, we do not want to look at variables such as
 	 * "merge.summary", "merge.tool", and "merge.verbosity".
 	 */
-	if (prefixcmp(var, "merge.") || (ep = strrchr(var, '.')) == var + 6)
+	if (prefixcmp(var, "merge.") || (ep = strrchr(var, '.')) == var + 5)
 		return 0;
 
 	/*
@@ -1021,13 +1024,8 @@ static int ll_merge(mmbuffer_t *result_buf,
 	ll_driver_name = git_path_check_merge(a->path);
 	driver = find_ll_merge_driver(ll_driver_name);
 
-	if (index_only && driver->recursive) {
-		void *merge_attr;
-
-		ll_driver_name = driver->recursive;
-		merge_attr = git_attr(ll_driver_name, strlen(ll_driver_name));
-		driver = find_ll_merge_driver(merge_attr);
-	}
+	if (index_only && driver->recursive)
+		driver = find_ll_merge_driver(driver->recursive);
 	merge_status = driver->fn(driver, a->path,
 				  &orig, &src1, name1, &src2, name2,
 				  result_buf);