Add missing functions to contrib/emacs/vc-git.el

diff --git a/diff-lib.c b/diff-lib.c
index c6d127346ab38b3b73285f61d2dc6874ab1dc7ac..92c0e39ad6f21e0511ee84052e2b762d6e447f61 100644 (file)
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -24,7 +24,7 @@ static int read_directory(const char *path, struct path_list *list)
 
        while ((e = readdir(dir)))
                if (strcmp(".", e->d_name) && strcmp("..", e->d_name))
-                       path_list_insert(xstrdup(e->d_name), list);
+                       path_list_insert(e->d_name, list);
 
        closedir(dir);
        return 0;
@@ -142,18 +142,34 @@ static int queue_diff(struct diff_options *o,
        }
 }
 
+/*
+ * Does the path name a blob in the working tree, or a directory
+ * in the working tree?
+ */
 static int is_in_index(const char *path)
 {
-       int len = strlen(path);
-       int pos = cache_name_pos(path, len);
-       char c;
-
-       if (pos < 0)
-               return 0;
-       if (strncmp(active_cache[pos]->name, path, len))
-               return 0;
-       c = active_cache[pos]->name[len];
-       return c == '\0' || c == '/';
+       int len, pos;
+       struct cache_entry *ce;
+
+       len = strlen(path);
+       while (path[len-1] == '/')
+               len--;
+       if (!len)
+               return 1; /* "." */
+       pos = cache_name_pos(path, len);
+       if (0 <= pos)
+               return 1;
+       pos = -1 - pos;
+       while (pos < active_nr) {
+               ce = active_cache[pos++];
+               if (ce_namelen(ce) <= len ||
+                   strncmp(ce->name, path, len) ||
+                   (ce->name[len] > '/'))
+                       break; /* path cannot be a prefix */
+               if (ce->name[len] == '/')
+                       return 1;
+       }
+       return 0;
 }
 
 static int handle_diff_files_args(struct rev_info *revs,
@@ -648,7 +664,7 @@ int run_diff_index(struct rev_info *revs, int cached)
        const char *tree_name;
        int match_missing = 0;
 
-       /* 
+       /*
         * Backward compatibility wart - "diff-index -m" does
         * not mean "do not ignore merges", but totally different.
         */