Fix getting status of files containing brackets

src/diff.c

@@ -20,14 +20,21 @@ static char *diff_prefix_from_pathspec(const git_strarray *pathspec)
 		return NULL;
 
 	/* diff prefix will only be leading non-wildcards */
-	for (scan = prefix.ptr; *scan && !git__iswildcard(*scan); ++scan);
+	for (scan = prefix.ptr; *scan; ++scan) {
+		if (git__iswildcard(*scan) &&
+			(scan == prefix.ptr || (*(scan - 1) != '\\')))
+			break;
+	}
 	git_buf_truncate(&prefix, scan - prefix.ptr);
 
-	if (prefix.size > 0)
-		return git_buf_detach(&prefix);
+	if (prefix.size <= 0) {
+		git_buf_free(&prefix);
+		return NULL;
+	}
 
-	git_buf_free(&prefix);
-	return NULL;
+	git_buf_unescape(&prefix);
+
+	return git_buf_detach(&prefix);
 }
 
 static bool diff_pathspec_is_interesting(const git_strarray *pathspec)
@@ -54,7 +61,10 @@ static bool diff_path_matches_pathspec(git_diff_list *diff, const char *path)
 		return true;
 
 	git_vector_foreach(&diff->pathspec, i, match) {
-		int result = p_fnmatch(match->pattern, path, 0);
+		int result = strcmp(match->pattern, path);
+		
+		if (result != 0)
+			result = p_fnmatch(match->pattern, path, 0);
 
 		/* if we didn't match, look for exact dirname prefix match */
 		if (result == FNM_NOMATCH &&
@@ -826,4 +836,3 @@ int git_diff_merge(
 
 	return error;
 }
-

src/status.c

@@ -176,10 +176,12 @@ static int get_one_status(const char *path, unsigned int status, void *data)
 	sfi->count++;
 	sfi->status = status;
 
-	if (sfi->count > 1 || strcmp(sfi->expected, path) != 0) {
+	if (sfi->count > 1 || 
+		(strcmp(sfi->expected, path) != 0 &&
+		p_fnmatch(sfi->expected, path, 0) != 0)) {
 		giterr_set(GITERR_INVALID,
 			"Ambiguous path '%s' given to git_status_file", sfi->expected);
-		return -1;
+		return GIT_EAMBIGUOUS;
 	}
 
 	return 0;