bindings: make ^Home and ^End go to top and tail of buffer

On some terminal emulators, Ctrl+Home and Ctrl+End produce special
keycodes, distinct from plain Home and End.  Make the users of those
emulators (and of the Linux console) glad by making ^Home and ^End
do the obvious thing, and the combinations with Shift too.

src/global.c

@@ -59,9 +59,10 @@ message_type lastmessage = HUSH;
 filestruct *pletion_line = NULL;
 	/* The line where the last completion was found, if any. */
 
-int controlleft, controlright, controlup, controldown;
+int controlleft, controlright, controlup, controldown, controlhome, controlend;
 #ifndef NANO_TINY
 int shiftcontrolleft, shiftcontrolright, shiftcontrolup, shiftcontroldown;
+int shiftcontrolhome, shiftcontrolend;
 int shiftaltleft, shiftaltright, shiftaltup, shiftaltdown;
 #endif
 
@@ -1078,8 +1079,10 @@ void shortcut_init(void)
     add_to_sclist(MMAIN|MHELP|MBROWSER|MLINTER, "F8", 0, do_page_down, 0);
     add_to_sclist(MMAIN|MHELP|MBROWSER|MLINTER, "PgDn", KEY_NPAGE, do_page_down, 0);
     add_to_sclist(MMAIN|MHELP, "M-\\", 0, do_first_line, 0);
+    add_to_sclist(MMAIN|MHELP, "^Home", CONTROL_HOME, do_first_line, 0);
     add_to_sclist(MMAIN|MHELP, "M-|", 0, do_first_line, 0);
     add_to_sclist(MMAIN|MHELP, "M-/", 0, do_last_line, 0);
+    add_to_sclist(MMAIN|MHELP, "^End", CONTROL_END, do_last_line, 0);
     add_to_sclist(MMAIN|MHELP, "M-?", 0, do_last_line, 0);
     add_to_sclist(MMAIN|MBROWSER, "M-W", 0, do_research, 0);
     add_to_sclist(MMAIN|MBROWSER, "F16", 0, do_research, 0);
@@ -1239,6 +1242,8 @@ void shortcut_init(void)
     add_to_sclist(MBROWSER|MWHEREISFILE, "M-?", 0, do_last_file, 0);
     add_to_sclist(MBROWSER, "Home", KEY_HOME, do_first_file, 0);
     add_to_sclist(MBROWSER, "End", KEY_END, do_last_file, 0);
+    add_to_sclist(MBROWSER, "^Home", CONTROL_HOME, do_first_file, 0);
+    add_to_sclist(MBROWSER, "^End", CONTROL_HOME, do_last_file, 0);
     add_to_sclist(MBROWSER, "^_", 0, goto_dir_void, 0);
     add_to_sclist(MBROWSER, "M-G", 0, goto_dir_void, 0);
     add_to_sclist(MBROWSER, "F13", 0, goto_dir_void, 0);

src/nano.c

@@ -2514,12 +2514,18 @@ int main(int argc, char **argv)
     controlright = get_keycode("kRIT5", CONTROL_RIGHT);
     controlup = get_keycode("kUP5", CONTROL_UP);
     controldown = get_keycode("kDN5", CONTROL_DOWN);
+    /* Ask for the codes for Control+Home/End. */
+    controlhome = get_keycode("kHOM5", CONTROL_HOME);
+    controlend = get_keycode("kEND5", CONTROL_END);
 #ifndef NANO_TINY
     /* Ask for the codes for Shift+Control+Left/Right/Up/Down. */
     shiftcontrolleft = get_keycode("kLFT6", SHIFT_CONTROL_LEFT);
     shiftcontrolright = get_keycode("kRIT6", SHIFT_CONTROL_RIGHT);
     shiftcontrolup = get_keycode("kUP6", SHIFT_CONTROL_UP);
     shiftcontroldown = get_keycode("kDN6", SHIFT_CONTROL_DOWN);
+    /* Ask for the codes for Shift+Control+Home/End. */
+    shiftcontrolhome = get_keycode("kHOM6", SHIFT_CONTROL_HOME);
+    shiftcontrolend = get_keycode("kEND6", SHIFT_CONTROL_END);
     /* Ask for the codes for Shift+Alt+Left/Right/Up/Down. */
     shiftaltleft = get_keycode("kLFT4", SHIFT_ALT_LEFT);
     shiftaltright = get_keycode("kRIT4", SHIFT_ALT_RIGHT);

src/nano.h

@@ -553,10 +553,14 @@ enum
 #define CONTROL_RIGHT 0x402
 #define CONTROL_UP 0x403
 #define CONTROL_DOWN 0x404
+#define CONTROL_HOME 0x411
+#define CONTROL_END 0x412
 #define SHIFT_CONTROL_LEFT 0x405
 #define SHIFT_CONTROL_RIGHT 0x406
 #define SHIFT_CONTROL_UP 0x407
 #define SHIFT_CONTROL_DOWN 0x408
+#define SHIFT_CONTROL_HOME 0x413
+#define SHIFT_CONTROL_END 0x414
 #define SHIFT_ALT_LEFT 0x409
 #define SHIFT_ALT_RIGHT 0x40a
 #define SHIFT_ALT_UP 0x40b

src/proto.h

@@ -51,11 +51,15 @@ extern int controlleft;
 extern int controlright;
 extern int controlup;
 extern int controldown;
+extern int controlhome;
+extern int controlend;
 #ifndef NANO_TINY
 extern int shiftcontrolleft;
 extern int shiftcontrolright;
 extern int shiftcontrolup;
 extern int shiftcontroldown;
+extern int shiftcontrolhome;
+extern int shiftcontrolend;
 extern int shiftaltleft;
 extern int shiftaltright;
 extern int shiftaltup;

src/winio.c

@@ -505,6 +505,10 @@ int parse_kbinput(WINDOW *win)
 	return CONTROL_UP;
     else if (retval == controldown)
 	return CONTROL_DOWN;
+    else if (retval == controlhome)
+	return CONTROL_HOME;
+    else if (retval == controlend)
+	return CONTROL_END;
 #ifndef NANO_TINY
     else if (retval == shiftcontrolleft) {
 	shift_held = TRUE;
@@ -518,6 +522,12 @@ int parse_kbinput(WINDOW *win)
     } else if (retval == shiftcontroldown) {
 	shift_held = TRUE;
 	return CONTROL_DOWN;
+    } else if (retval == shiftcontrolhome) {
+	shift_held = TRUE;
+	return CONTROL_HOME;
+    } else if (retval == shiftcontrolend) {
+	shift_held = TRUE;
+	return CONTROL_END;
     } else if (retval == shiftaltleft) {
 	shift_held = TRUE;
 	return KEY_HOME;
@@ -554,6 +564,10 @@ int parse_kbinput(WINDOW *win)
 		return CONTROL_LEFT;
 	    else if (retval == KEY_RIGHT)
 		return CONTROL_RIGHT;
+	    else if (retval == KEY_HOME)
+		return CONTROL_HOME;
+	    else if (retval == KEY_END)
+		return CONTROL_END;
 	}
 #ifndef NANO_TINY
 	/* Are both Shift and Alt being held? */