Ignore backspace at empty filter prompt

README.md

@@ -96,7 +96,7 @@ It runs smoothly on the Pi, [Termux](https://www.youtube.com/watch?v=AbaauM7gUJw
 3. To open text files in `$VISUAL` (else `$EDITOR`, fallback vi) add program option `-e` in your alias.
 4. For additional functionality [install plugins](https://github.com/jarun/nnn/tree/master/plugins#installing-plugins).
 5. To copy selected file paths to system clipboard and show notis on cp, mv, rm completion use option `-x`.
-6. For a strictly CLI environment, customize and use plugin [`nuke`](https://github.com/jarun/nnn/blob/master/plugins/nuke).
+6. For a strictly CLI environment, customize and use plugin [`nuke`](https://github.com/jarun/nnn/blob/master/plugins/nuke) with option `-c`.
 
 Don't memorize! Arrows (or <kbd>h</kbd> <kbd>j</kbd> <kbd>k</kbd> <kbd>l</kbd>), <kbd>/</kbd>, <kbd>q</kbd> suffice. <kbd>Tab</kbd> creates, cycles contexts. <kbd>?</kbd> lists shortcuts.
 

src/nnn.c

@@ -2469,7 +2469,7 @@ static int filterentries(char *path, char *lastname)
 				wcstombs(ln, wln, REGEX_MAX);
 				ndents = total;
 			} else
-				*ch = CONTROL('L');
+				continue;
 			// fallthrough
 		case CONTROL('L'):
 			if (*ch == CONTROL('L')) {