command: restore the "playlistinfo -1" behavior

If a range is "-1", display the whole list. This behavior is undocumented, but some clients rely on it.

command: restore the "playlistinfo -1" behavior
983822ea · Max Kellermann · e33cd80f · 983822ea
Commit 983822ea authored Jan 11, 2009 by Max Kellermann
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command.c src/command.c +8 -0

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--- a/src/command.c
+++ b/src/command.c
@@ -177,6 +177,14 @@ check_range(struct client *client, unsigned *value_r1, unsigned *value_r2,
 		return false;
 	}

+	if (value == -1 && *test == 0) {
+		/* compatibility with older MPD versions: specifying
+		   "-1" makes MPD display the whole list */
+		*value_r1 = 0;
+		*value_r2 = UINT_MAX;
+		return true;
+	}
+
 	if (value < 0) {
 		command_error(client, ACK_ERROR_ARG,
 			      "Number is negative: %s", s);