From de6ec20aec4af67f8de5ab94b76f43722c8e655f Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Fri, 6 Jan 2017 19:35:18 +1300
Subject: Clean binding of ^L in ksh93 to clear screen

<http://unix.stackexchange.com/questions/272591/how-to-make-ctrl-l-to-clear-screen-in-ksh-under-red-hat-linux/272720#272720>
---
 ksh/kshrc.d/bind.ksh | 25 +++++++------------------
 1 file changed, 7 insertions(+), 18 deletions(-)

(limited to 'ksh')

diff --git a/ksh/kshrc.d/bind.ksh b/ksh/kshrc.d/bind.ksh
index 22fb53a8..e32b9565 100644
--- a/ksh/kshrc.d/bind.ksh
+++ b/ksh/kshrc.d/bind.ksh
@@ -6,29 +6,18 @@ case $KSH_VERSION in
         bind ^L=clear-screen
         ;;
 
-    # Works pretty well, but only on an empty line
-    *'PD KSH'*)
-        bind -m '^L'=clear'^J'
-        ;;
-
-    # Not great; only works on an empty line, and skips a line after clearing;
-    # need a better way to redraw the prompt after clearing, or some suitable
-    # way to fake it with tput (can I clear-but-one)?
+    # Works great
     *'93'*)
-
-        # Bind function to run on each KEYBD trap
         bind() {
             case ${.sh.edchar} in
-                $'\x0c') # ^L
-
-                    # Write a sequence to clear the screen
-                    tput clear
-
-                    # Change key to Enter to redraw the prompt
-                    .sh.edchar=$'\x0d'
-                    ;;
+                $'\f') .sh.edchar=$'\e\f' ;;
             esac
         }
         trap bind KEYBD
         ;;
+
+    # Works pretty well, but only on an empty line
+    *'PD KSH'*)
+        bind -m '^L'=clear'^J'
+        ;;
 esac
-- 
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