TTY: new function: tty_display_8bit().

tty_display_8bit() is used instead of NCurses meta() and
S-Lang SLsmg_Display_Eight_Bit.

src/boxes.c

@@ -548,10 +548,10 @@ display_bits_box (void)
 
     eight_bit_clean = new_mode < 3;
     full_eight_bits = new_mode < 2;
-#ifndef HAVE_SLANG
-    meta (stdscr, eight_bit_clean);
+#ifdef HAVE_SLANG
+    tty_display_8bit (full_eight_bits != 0);
 #else
-    SLsmg_Display_Eight_Bit = full_eight_bits ? 128 : 160;
+    tty_display_8bit (eight_bit_clean != 0);
 #endif
     use_8th_bit_as_meta = !new_meta;
 }
@@ -649,11 +649,10 @@ display_bits_box (void)
 	    init_translation_table (source_codepage, display_codepage);
 	if (errmsg)
 	    message (D_ERROR, MSG_ERROR, "%s", errmsg);
-#ifndef HAVE_SLANG
-	meta (stdscr, display_codepage != 0);
+#ifdef HAVE_SLANG
+	tty_display_8bit (display_codepage != 0 && display_codepage != 1);
 #else
-	SLsmg_Display_Eight_Bit = (display_codepage != 0
-				   && display_codepage != 1) ? 128 : 160;
+	tty_display_8bit (display_codepage != 0);
 #endif
 	use_8th_bit_as_meta = !(inpcheck->state & C_BOOL);
     }

src/main.c

@@ -1373,10 +1373,10 @@ setup_pre (void)
 #define eight_bit_clean (1)
 #endif				/* !HAVE_CHARSET */
 
-#ifndef HAVE_SLANG
-    meta (stdscr, eight_bit_clean);
+#ifdef HAVE_SLANG
+    tty_display_8bit (full_eight_bits != 0);
 #else
-    SLsmg_Display_Eight_Bit = full_eight_bits ? 128 : 160;
+    tty_display_8bit (eight_bit_clean != 0);
 #endif
 }
 

src/tty/tty-ncurses.c

@@ -232,6 +232,12 @@ tty_set_alt_charset (gboolean alt_charset)
     (void) alt_charset;
 }
 
+void
+tty_display_8bit (gboolean what)
+{
+    meta (stdscr, (int) what);
+}
+
 void
 tty_print_char (int c)
 {

src/tty/tty-slang.c

@@ -473,6 +473,12 @@ tty_set_alt_charset (gboolean alt_charset)
     SLsmg_set_char_set ((int) alt_charset);
 }
 
+void
+tty_display_8bit (gboolean what)
+{
+    SLsmg_Display_Eight_Bit = what ? 128 : 160;
+}
+
 void
 tty_print_char (int c)
 {

src/tty/tty.h

@@ -57,6 +57,7 @@ extern void tty_getyx(int *py, int *px);
 
 extern void tty_set_alt_charset (gboolean alt_charset);
 
+extern void tty_display_8bit (gboolean what);
 extern void tty_print_char(int c);
 extern void tty_print_alt_char(int c);
 extern void tty_print_string(const char *s);