From 476c8387539015904acbdfe864261f14a5a1c2d8 Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Thu, 9 Jul 2020 20:55:37 +0200
Subject: [PATCH] bindings: allow typing digits on the numeric keypad by
 holding Shift

Until now, on an xterm, Shift plus any keypad key would say
"Unknown sequence", which is not useful.  On other terminal
emulators (urxvt, Pantheon, LXTerminal), Shift plus a keypad
key already produces the relevant digit or symbol, so this
change harmonizes the behavior of the different emulators.

However, on a Linux console, Shift plus a keypad key moves
the cursor and selects the text that is passed over.  And
holding Alt while pressing a keypad key does nothing at all.
---
 src/winio.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/winio.c b/src/winio.c
index 40adc66b..ead5b018 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -368,12 +368,19 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
 		/* ->->->->->->-> */
 						}
 						break;
-					case '2':
-						if (length > 2)
+					case '2':  /* Shift */
+					case '4':  /* Shift+Alt */
+					case '6':  /* Shift+Ctrl */
+						if (length > 2) {
 							*consumed = 3;
+							/* Allow typing digits on the numeric keypad without
+							 * engaging NumLock.  Esc O 2 p == Shift-0, .... */
+							return (seq[2] - 0x40);
+						}
 						break;
-					case '3':
-					case '5':
+					case '3':  /* Alt */
+					case '5':  /* Ctrl */
+					case '7':  /* Alt+Ctrl */
 						if (length > 2) {
 							*consumed = 3;
 							switch (seq[2]) {