t6023: merge-file fails to output anything for a degenerate merge

diff --git a/dir.c b/dir.c
index d79762c7c0bc9e762ed8dc5f00fb2fd3ce01ad57..4e6b988d37a0fb58fde4a170ebf7fe3702a3a474 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -52,8 +52,13 @@ int common_prefix(const char **pathspec)
        return prefix;
 }
 
+static inline int special_char(unsigned char c1)
+{
+       return !c1 || c1 == '*' || c1 == '[' || c1 == '?' || c1 == '\\';
+}
+
 /*
- * Does 'match' matches the given name?
+ * Does 'match' match the given name?
  * A match is found if
  *
  * (1) the 'match' string is leading directory of 'name', or
@@ -69,14 +74,27 @@ static int match_one(const char *match, const char *name, int namelen)
        int matchlen;
 
        /* If the match was just the prefix, we matched */
-       matchlen = strlen(match);
-       if (!matchlen)
+       if (!*match)
                return MATCHED_RECURSIVELY;
 
+       for (;;) {
+               unsigned char c1 = *match;
+               unsigned char c2 = *name;
+               if (special_char(c1))
+                       break;
+               if (c1 != c2)
+                       return 0;
+               match++;
+               name++;
+               namelen--;
+       }
+
+
        /*
         * If we don't match the matchstring exactly,
         * we need to match by fnmatch
         */
+       matchlen = strlen(match);
        if (strncmp(match, name, matchlen))
                return !fnmatch(match, name, 0) ? MATCHED_FNMATCH : 0;
 
@@ -121,7 +139,7 @@ int match_pathspec(const char **pathspec, const char *name, int namelen, int pre
 
 static int no_wildcard(const char *string)
 {
-       return string[strcspn(string, "*?[{")] == '\0';
+       return string[strcspn(string, "*?[{\\")] == '\0';
 }
 
 void add_exclude(const char *string, const char *base,
@@ -274,7 +292,7 @@ static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
        dir->basebuf[baselen] = '\0';
 }
 
-/* Scan the list and let the last match determines the fate.
+/* Scan the list and let the last match determine the fate.
  * Return 1 for exclude, 0 for include and -1 for undecided.
  */
 static int excluded_1(const char *pathname,
@@ -371,7 +389,7 @@ static struct dir_entry *dir_entry_new(const char *pathname, int len)
 
 struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len)
 {
-       if (cache_name_exists(pathname, len))
+       if (cache_name_exists(pathname, len, ignore_case))
                return NULL;
 
        ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
@@ -819,3 +837,23 @@ void setup_standard_excludes(struct dir_struct *dir)
        if (excludes_file && !access(excludes_file, R_OK))
                add_excludes_from_file(dir, excludes_file);
 }
+
+int remove_path(const char *name)
+{
+       char *slash;
+
+       if (unlink(name) && errno != ENOENT)
+               return -1;
+
+       slash = strrchr(name, '/');
+       if (slash) {
+               char *dirs = xstrdup(name);
+               slash = dirs + (slash - name);
+               do {
+                       *slash = '\0';
+               } while (rmdir(dirs) && (slash = strrchr(dirs, '/')));
+               free(dirs);
+       }
+       return 0;
+}
+