* lisp/flow-ctrl.el: Use lexical-binding.

* lisp/flow-ctrl.el (enable-flow-control): Minor cleanup.

diff --git a/lisp/flow-ctrl.el b/lisp/flow-ctrl.el
index 656edf2eb09883f31088652df549943cff8fdafc..adb52d7253a22c63616dd53e0f8a820871c242a5 100644 (file)
--- a/lisp/flow-ctrl.el
+++ b/lisp/flow-ctrl.el
@@ -1,4 +1,4 @@
-;;; flow-ctrl.el --- help for lusers on cu(1) or ttys with wired-in ^S/^Q flow control
+;;; flow-ctrl.el --- help for lusers on cu(1) or ttys with wired-in ^S/^Q flow control  -*- lexical-binding: t -*-
 
 ;; Copyright (C) 1990-1991, 1994, 2001-2021 Free Software Foundation,
 ;; Inc.
@@ -64,12 +64,11 @@ With arg, enable flow control mode if arg is positive, otherwise disable."
       (progn
        ;; Turn flow control off, and stop exchanging chars.
        (set-input-mode t nil (nth 2 (current-input-mode)))
-       (if keyboard-translate-table
-           (progn
-             (aset keyboard-translate-table flow-control-c-s-replacement nil)
-             (aset keyboard-translate-table ?\^s nil)
-             (aset keyboard-translate-table flow-control-c-q-replacement nil)
-             (aset keyboard-translate-table ?\^q nil))))
+        (when keyboard-translate-table
+          (aset keyboard-translate-table flow-control-c-s-replacement nil)
+          (aset keyboard-translate-table ?\^s nil)
+          (aset keyboard-translate-table flow-control-c-q-replacement nil)
+          (aset keyboard-translate-table ?\^q nil)))
     ;; Turn flow control on.
     ;; Tell emacs to pass C-s and C-q to OS.
     (set-input-mode nil t (nth 2 (current-input-mode)))