git-add--interactive: Improve behavior on bogus input

diff --git a/diff.c b/diff.c
index 97cc5bc085ba21693007328bb402860420949ec0..0ee9ea1c1b47b82710a3850e7e9f679e4486f7bd 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -17,8 +17,9 @@
 #endif
 
 static int diff_detect_rename_default;
-static int diff_rename_limit_default = -1;
+static int diff_rename_limit_default = 100;
 static int diff_use_color_default;
+int diff_auto_refresh_index = 1;
 
 static char diff_colors[][COLOR_MAXLEN] = {
        "\033[m",       /* reset */
@@ -166,6 +167,10 @@ int git_diff_ui_config(const char *var, const char *value)
                        diff_detect_rename_default = DIFF_DETECT_RENAME;
                return 0;
        }
+       if (!strcmp(var, "diff.autorefreshindex")) {
+               diff_auto_refresh_index = git_config_bool(var, value);
+               return 0;
+       }
        if (!prefixcmp(var, "diff.")) {
                const char *ep = strrchr(var, '.');
 
@@ -2919,10 +2924,6 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
                                fill_mmfile(&mf2, p->two) < 0)
                        return error("unable to read files to diff");
 
-               /* Maybe hash p->two? into the patch id? */
-               if (diff_filespec_is_binary(p->two))
-                       continue;
-
                len1 = remove_space(p->one->path, strlen(p->one->path));
                len2 = remove_space(p->two->path, strlen(p->two->path));
                if (p->one->mode == 0)
@@ -3143,6 +3144,22 @@ static void diffcore_apply_filter(const char *filter)
        *q = outq;
 }
 
+/* Check whether two filespecs with the same mode and size are identical */
+static int diff_filespec_is_identical(struct diff_filespec *one,
+                                     struct diff_filespec *two)
+{
+       if (S_ISGITLINK(one->mode)) {
+               diff_fill_sha1_info(one);
+               diff_fill_sha1_info(two);
+               return !hashcmp(one->sha1, two->sha1);
+       }
+       if (diff_populate_filespec(one, 0))
+               return 0;
+       if (diff_populate_filespec(two, 0))
+               return 0;
+       return !memcmp(one->data, two->data, one->size);
+}
+
 static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
 {
        int i;
@@ -3174,10 +3191,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
                    diff_populate_filespec(p->one, 1) ||
                    diff_populate_filespec(p->two, 1) ||
                    (p->one->size != p->two->size) ||
-
-                   diff_populate_filespec(p->one, 0) || /* (2) */
-                   diff_populate_filespec(p->two, 0) ||
-                   memcmp(p->one->data, p->two->data, p->one->size))
+                   !diff_filespec_is_identical(p->one, p->two)) /* (2) */
                        diff_q(&outq, p);
                else {
                        /*