Introduce usagef() that takes a printf-style format

diff --git a/xdiff/xmerge.c b/xdiff/xmerge.c
index d9737f04c220645aa762d79ff14a84855721ffda..1cb65a95166a8cb60af590118f59d78aa4d24b74 100644 (file)
--- a/xdiff/xmerge.c
+++ b/xdiff/xmerge.c
@@ -563,23 +563,22 @@ int xdl_merge(mmfile_t *orig, mmfile_t *mf1, const char *name1,
                return -1;
        }
        status = 0;
-       if (xscr1 || xscr2) {
-               if (!xscr1) {
-                       result->ptr = xdl_malloc(mf2->size);
-                       memcpy(result->ptr, mf2->ptr, mf2->size);
-                       result->size = mf2->size;
-               } else if (!xscr2) {
-                       result->ptr = xdl_malloc(mf1->size);
-                       memcpy(result->ptr, mf1->ptr, mf1->size);
-                       result->size = mf1->size;
-               } else {
-                       status = xdl_do_merge(&xe1, xscr1, name1,
-                                             &xe2, xscr2, name2,
-                                             flags, xpp, result);
-               }
-               xdl_free_script(xscr1);
-               xdl_free_script(xscr2);
+       if (!xscr1) {
+               result->ptr = xdl_malloc(mf2->size);
+               memcpy(result->ptr, mf2->ptr, mf2->size);
+               result->size = mf2->size;
+       } else if (!xscr2) {
+               result->ptr = xdl_malloc(mf1->size);
+               memcpy(result->ptr, mf1->ptr, mf1->size);
+               result->size = mf1->size;
+       } else {
+               status = xdl_do_merge(&xe1, xscr1, name1,
+                                     &xe2, xscr2, name2,
+                                     flags, xpp, result);
        }
+       xdl_free_script(xscr1);
+       xdl_free_script(xscr2);
+
        xdl_free_env(&xe1);
        xdl_free_env(&xe2);