From 4ce2e146eab8f8779d5ae56a8977da71f76e5c45 Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Thu, 19 Mar 2020 14:27:57 +0100
Subject: [PATCH] tweaks: elide three unneeded #defines

Backspace and Tab and Carriage Return have standard backslash escapes.
---
 src/chars.c  | 2 +-
 src/global.c | 4 ++--
 src/nano.c   | 4 ++--
 src/nano.h   | 3 ---
 src/prompt.c | 2 +-
 src/winio.c  | 6 +++---
 6 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/src/chars.c b/src/chars.c
index f8492a1b..0382827e 100644
--- a/src/chars.c
+++ b/src/chars.c
@@ -83,7 +83,7 @@ bool is_blank_char(const char *c)
 	wchar_t wc;
 
 	if ((signed char)*c >= 0)
-		return (*c == ' ' || *c == TAB_CODE);
+		return (*c == ' ' || *c == '\t');
 
 	if (mbtowc(&wc, c, MAXCHARLEN) < 0)
 		return FALSE;
diff --git a/src/global.c b/src/global.c
index fefc9809..ca9a7bb0 100644
--- a/src/global.c
+++ b/src/global.c
@@ -1130,13 +1130,13 @@ void shortcut_init(void)
 	/* Link key combos to functions in certain menus. */
 	add_to_sclist(MMOST|MBROWSER, "^M", 0, do_enter, 0);
 	add_to_sclist(MMOST|MBROWSER, "Enter", KEY_ENTER, do_enter, 0);
-	add_to_sclist(MMOST, "^H", BS_CODE, do_backspace, 0);
+	add_to_sclist(MMOST, "^H", '\b', do_backspace, 0);
 	add_to_sclist(MMOST, "Bsp", KEY_BACKSPACE, do_backspace, 0);
 	add_to_sclist(MMOST, "Sh-Del", SHIFT_DELETE, do_backspace, 0);
 	add_to_sclist(MMOST, "^D", 0, do_delete, 0);
 	add_to_sclist(MMOST, "Del", KEY_DC, do_delete, 0);
 	add_to_sclist(MMOST, "^I", 0, do_tab, 0);
-	add_to_sclist(MMOST, "Tab", TAB_CODE, do_tab, 0);
+	add_to_sclist(MMOST, "Tab", '\t', do_tab, 0);
 	add_to_sclist((MMOST|MBROWSER) & ~MFINDINHELP, "^G", 0, do_help, 0);
 	add_to_sclist(MMAIN|MBROWSER|MHELP, "^X", 0, do_exit, 0);
 	if (!ISSET(PRESERVE))
diff --git a/src/nano.c b/src/nano.c
index d3a32325..5f358707 100644
--- a/src/nano.c
+++ b/src/nano.c
@@ -1469,13 +1469,13 @@ void suck_up_input_and_paste_it(void)
 	while (bracketed_paste) {
 		int input = get_kbinput(edit, BLIND);
 
-		if (input == CR_CODE) {
+		if (input == '\r') {
 			line->next = make_new_node(line);
 			line = line->next;
 			line->data = copy_of("");
 			index = 0;
 		} else if ((0x20 <= input && input <= 0xFF && input != DEL_CODE) ||
-													input == TAB_CODE) {
+														input == '\t') {
 			line->data = charealloc(line->data, index + 2);
 			line->data[index++] = (char)input;
 			line->data[index] = '\0';
diff --git a/src/nano.h b/src/nano.h
index 06f6e876..98bf2e03 100644
--- a/src/nano.h
+++ b/src/nano.h
@@ -565,9 +565,6 @@ enum
 #endif
 
 /* Basic control codes. */
-#define BS_CODE   0x08
-#define TAB_CODE  0x09
-#define CR_CODE   0x0D
 #define ESC_CODE  0x1B
 #define DEL_CODE  0x7F
 
diff --git a/src/prompt.c b/src/prompt.c
index d75b984a..796344aa 100644
--- a/src/prompt.c
+++ b/src/prompt.c
@@ -460,7 +460,7 @@ functionptrtype acquire_an_answer(int *actual, bool allow_tabs,
 		if (func == do_tab) {
 #ifdef ENABLE_HISTORIES
 			if (history_list != NULL) {
-				if (last_kbinput != the_code_for(do_tab, TAB_CODE))
+				if (last_kbinput != the_code_for(do_tab, '\t'))
 					complete_len = strlen(answer);
 
 				if (complete_len > 0) {
diff --git a/src/winio.c b/src/winio.c
index 63f359cc..b7f533ab 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -930,7 +930,7 @@ int parse_kbinput(WINDOW *win)
 		case 1:
 			if (keycode >= 0x80)
 				retval = keycode;
-			else if (keycode == TAB_CODE)
+			else if (keycode == '\t')
 				retval = SHIFT_TAB;
 			else if ((keycode != 'O' && keycode != 'o' && keycode != '[') ||
 						key_buffer_len == 0 || *key_buffer == ESC_CODE) {
@@ -1144,7 +1144,7 @@ int parse_kbinput(WINDOW *win)
 		}
 		/* Is Shift being held? */
 		if (modifiers & 0x01) {
-			if (retval == TAB_CODE)
+			if (retval == '\t')
 				return SHIFT_TAB;
 			if (!meta_key)
 				shift_held = TRUE;
@@ -1194,7 +1194,7 @@ int parse_kbinput(WINDOW *win)
 
 #ifndef NANO_TINY
 	/* When <Tab> is pressed while the mark is on, do an indent. */
-	if (retval == TAB_CODE && openfile->mark && currmenu == MMAIN &&
+	if (retval == '\t' && openfile->mark && currmenu == MMAIN &&
 				!bracketed_paste && openfile->mark != openfile->current)
 		return INDENT_KEY;
 #endif