read_directory: show_both option.

This teaches the internal read_directory() routine to return
both interesting and ignored pathnames.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

dir.c

@@ -260,7 +260,8 @@ int excluded(struct dir_struct *dir, const char *pathname)
 	return 0;
 }
 
-static void add_name(struct dir_struct *dir, const char *pathname, int len)
+static void add_name(struct dir_struct *dir, const char *pathname, int len,
+		     int ignored_entry)
 {
 	struct dir_entry *ent;
 
@@ -273,6 +274,7 @@ static void add_name(struct dir_struct *dir, const char *pathname, int len)
 		dir->entries = xrealloc(dir->entries, alloc*sizeof(ent));
 	}
 	ent = xmalloc(sizeof(*ent) + len + 1);
+	ent->ignored_entry = ignored_entry;
 	ent->len = len;
 	memcpy(ent->name, pathname, len);
 	ent->name[len] = 0;
@@ -314,6 +316,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
 
 		while ((de = readdir(fdir)) != NULL) {
 			int len;
+			int ignored_entry;
 
 			if ((de->d_name[0] == '.') &&
 			    (de->d_name[1] == 0 ||
@@ -322,11 +325,12 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
 				continue;
 			len = strlen(de->d_name);
 			memcpy(fullname + baselen, de->d_name, len+1);
-			if (excluded(dir, fullname) != dir->show_ignored) {
-				if (!dir->show_ignored || DTYPE(de) != DT_DIR) {
-					continue;
-				}
-			}
+			ignored_entry = excluded(dir, fullname);
+
+			if (!dir->show_both &&
+			    (ignored_entry != dir->show_ignored) &&
+			    (!dir->show_ignored || DTYPE(de) != DT_DIR))
+				continue;
 
 			switch (DTYPE(de)) {
 			struct stat st;
@@ -364,7 +368,8 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
 			if (check_only)
 				goto exit_early;
 			else
-				add_name(dir, fullname, baselen + len);
+				add_name(dir, fullname, baselen + len,
+					 ignored_entry);
 		}
 exit_early:
 		closedir(fdir);

dir.h

@@ -13,7 +13,8 @@
 
 
 struct dir_entry {
-	int len;
+	unsigned ignored_entry : 1;
+	unsigned int len : 15;
 	char name[FLEX_ARRAY]; /* more */
 };
 
@@ -29,7 +30,8 @@ struct exclude_list {
 
 struct dir_struct {
 	int nr, alloc;
-	unsigned int show_ignored:1,
+	unsigned int show_both: 1,
+		     show_ignored:1,
 		     show_other_directories:1,
 		     hide_empty_directories:1;
 	struct dir_entry **entries;