git-mv: succeed even if source is a prefix of destination

[git.git] / builtin-mv.c

diff --git a/builtin-mv.c b/builtin-mv.c
index a731f8d9cfed783fb59cb64db93f854ef0a4ebf9..e7b5eb7088dc3d45608a7d9b3ebaf1c66501596e 100644 (file)
--- a/builtin-mv.c
+++ b/builtin-mv.c
@@ -119,6 +119,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
 
        /* Checking */
        for (i = 0; i < count; i++) {
+               int length;
                const char *bad = NULL;
 
                if (show_only)
@@ -204,7 +205,9 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
                }
 
                if (!bad &&
-                   !strncmp(destination[i], source[i], strlen(source[i])))
+                   (length = strlen(source[i])) >= 0 &&
+                   !strncmp(destination[i], source[i], length) &&
+                   (destination[i][length] == 0 || destination[i][length] == '/'))
                        bad = "can not move directory into itself";
 
                if (!bad && cache_name_pos(source[i], strlen(source[i])) < 0)