From 3f938e29b6b5fd3f62e99902a7daaf9a1f08034a Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Wed, 30 Sep 2020 19:57:23 +0200
Subject: [PATCH] build: exclude bunches of raw escape sequences from the tiny
 version

The tiny version is probably only ever used in the Debian installer,
on the bterm terminal, which produces escape sequences like those of
a Linux console.  So, exclude all other raw sequences.

(After support for Slang has been removed, we can maybe even exclude
ALL raw sequences from the tiny version, and the corresponding option
(-K/--rawsequences) too.)
---
 src/winio.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/winio.c b/src/winio.c
index c2511018..4da9b9ed 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -395,6 +395,7 @@ int convert_SS3_sequence(const int *seq, size_t length, int *consumed)
 			return KEY_END;
 		case 'H': /* Esc O H == Home on old xterm. */
 			return KEY_HOME;
+#ifndef NANO_TINY
 		case 'M': /* Esc O M == Enter on numeric keypad
 				   * with NumLock off on VT100/VT220/VT320. */
 			return KEY_ENTER;
@@ -452,6 +453,7 @@ int convert_SS3_sequence(const int *seq, size_t length, int *consumed)
 			return KEY_UP;
 		case 'y': /* Esc O y == PageUp (9) on the same. */
 			return KEY_PPAGE;
+#endif
 	}
 
 	return FOREIGN_SEQUENCE;
@@ -470,19 +472,23 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 			else if (length > 2 && seq[2] == '~') {
 				*consumed = 3;
 				switch (seq[1]) {
+#ifndef NANO_TINY
 					case '1': /* Esc [ 1 1 ~ == F1 on rxvt/Eterm. */
 					case '2': /* Esc [ 1 2 ~ == F2 on rxvt/Eterm. */
 					case '3': /* Esc [ 1 3 ~ == F3 on rxvt/Eterm. */
 					case '4': /* Esc [ 1 4 ~ == F4 on rxvt/Eterm. */
 					case '5': /* Esc [ 1 5 ~ == F5 on xterm/rxvt/Eterm. */
 						return KEY_F(seq[1] - '0');
+#endif
 					case '7': /* Esc [ 1 7 ~ == F6 on VT220/VT320/
 							   * Linux console/xterm/rxvt/Eterm. */
 					case '8': /* Esc [ 1 8 ~ == F7 on the same. */
 					case '9': /* Esc [ 1 9 ~ == F8 on the same. */
 						return KEY_F(seq[1] - '1');
 				}
-			} else if (length > 3 && seq[1] == ';') {
+			}
+#ifndef NANO_TINY
+			 else if (length > 3 && seq[1] == ';') {
 				*consumed = 4;
 				switch (seq[2]) {
 					case '2':
@@ -493,15 +499,12 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 							case 'D': /* Esc [ 1 ; 2 D == Shift-Left on xterm. */
 								shift_held = TRUE;
 								return arrow_from_ABCD(seq[3]);
-#ifndef NANO_TINY
 							case 'F': /* Esc [ 1 ; 2 F == Shift-End on xterm. */
 								return SHIFT_END;
 							case 'H': /* Esc [ 1 ; 2 H == Shift-Home on xterm. */
 								return SHIFT_HOME;
-#endif
 						}
 						break;
-#ifndef NANO_TINY
 					case '9': /* To accommodate iTerm2 in "xterm mode". */
 					case '3':
 						switch (seq[3]) {
@@ -529,7 +532,6 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 								return SHIFT_HOME;
 						}
 						break;
-#endif
 					case '5':
 						switch (seq[3]) {
 							case 'A': /* Esc [ 1 ; 5 A == Ctrl-Up on xterm. */
@@ -546,7 +548,6 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 								return CONTROL_HOME;
 						}
 						break;
-#ifndef NANO_TINY
 					case '6':
 						switch (seq[3]) {
 							case 'A': /* Esc [ 1 ; 6 A == Shift-Ctrl-Up on xterm. */
@@ -563,11 +564,11 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 								return shiftcontrolhome;
 						}
 						break;
-#endif
 				}
 			} else if (length > 4 && seq[2] == ';' && seq[4] == '~')
 				/* Esc [ 1 n ; 2 ~ == F17...F20 on some terminals. */
 				*consumed = 5;
+#endif /* !NANO-TINY */
 #ifdef USE_SLANG
 			else if (length == 3 && seq[2] == ';')
 				/* Discard broken sequences that Slang produces. */
@@ -744,6 +745,7 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 			return KEY_PPAGE;
 		case 'L': /* Esc [ L == Insert on ANSI/FreeBSD console. */
 			return KEY_IC;
+#ifndef NANO_TINY
 		case 'M': /* Esc [ M == F1 on FreeBSD console. */
 		case 'N': /* Esc [ N == F2 on FreeBSD console. */
 		case 'O': /* Esc [ O == F3 on FreeBSD console. */
@@ -753,25 +755,30 @@ int convert_CSI_sequence(const int *seq, size_t length, int *consumed)
 		case 'S': /* Esc [ S == F7 on FreeBSD console. */
 		case 'T': /* Esc [ T == F8 on FreeBSD console. */
 			return KEY_F(seq[0] - 'L');
+#endif
 		case 'U': /* Esc [ U == PageDown on Mach console. */
 			return KEY_NPAGE;
 		case 'V': /* Esc [ V == PageUp on Mach console. */
 			return KEY_PPAGE;
+#ifndef NANO_TINY
 		case 'W': /* Esc [ W == F11 on FreeBSD console. */
 			return KEY_F(11);
 		case 'X': /* Esc [ X == F12 on FreeBSD console. */
 			return KEY_F(12);
+#endif
 		case 'Y': /* Esc [ Y == End on Mach console. */
 			return KEY_END;
 		case 'Z': /* Esc [ Z == Shift-Tab on ANSI/Linux console/
 				   * FreeBSD console/xterm/rxvt/Terminal. */
 			return SHIFT_TAB;
+#ifndef NANO_TINY
 		case 'a': /* Esc [ a == Shift-Up on rxvt/Eterm. */
 		case 'b': /* Esc [ b == Shift-Down on rxvt/Eterm. */
 		case 'c': /* Esc [ c == Shift-Right on rxvt/Eterm. */
 		case 'd': /* Esc [ d == Shift-Left on rxvt/Eterm. */
 			shift_held = TRUE;
 			return arrow_from_ABCD(seq[0] - 0x20);
+#endif
 		case '[':
 			if (length > 1) {
 				*consumed = 2;