nested_up() search for first legal depth to change to

plugins/clish/sym_misc.c

@@ -156,12 +156,16 @@ CLISH_PLUGIN_SYM(clish_nested_up)
 
 	if (!this)
 		return -1;
-	/* If depth=0 then exit */
-	if (((depth = clish_shell__get_depth(this)) == 0) ||
-		!clish_shell__set_depth(this, --depth)) {
-		clish_shell__set_state(this, SHELL_STATE_CLOSING);
-		return 0;
+	depth = clish_shell__get_depth(this);
+
+	/* Iterate up through the pwd stack */
+	while (depth > 0) {
+		depth--;
+		if (clish_shell__set_depth(this, depth))
+			return 0;
 	}
+	/* If depth == 0 then exit */
+	clish_shell__set_state(this, SHELL_STATE_CLOSING);
 
 	script = script; /* Happy compiler */
 	out = out; /* Happy compiler */