nano

commit 476c8387539015904acbdfe864261f14a5a1c2d8
parent ecb4dac4942032f56f1dbadc738c56aa6cfa0e38
Author: Benno Schulenberg <bensberg@telfort.nl>
Date:   Thu,  9 Jul 2020 20:55:37 +0200

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.

Diffstat:
M
src/winio.c
 | 
15
+++++++++++----

1 file changed, 11 insertions(+), 4 deletions(-)
diff --git 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]) {