make the changed suspend/continue routines work properly under slang

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3650 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -150,7 +150,7 @@ CVS code -
 	  (Benno Schulenberg, minor tweaks by DLR and Nick Warne)
 	- Make suspension clear the screen and put the cursor on the
 	  last line before displaying anything, as Pico does.  Changes
-	  to do_suspend() and do_continue(). (DLR)
+	  to do_suspend(), do_continue(), and terminal_init(). (DLR)
 - browser.c:
   do_browser()
 	- Reference NANO_GOTODIR_(ALT|F)?KEY instead of

src/nano.c

@@ -1027,7 +1027,11 @@ RETSIGTYPE do_continue(int signal)
     /* Restore the terminal to its previous state. */
     terminal_init();
 
-    /* Update the screen. */
+    /* Turn the cursor back on for sure. */
+    curs_set(1);
+
+    /* Redraw the contents of the windows that need it. */
+    blank_statusbar();
     total_refresh();
 #endif
 }
@@ -1228,13 +1232,27 @@ void enable_flow_control(void)
  * interpretation of the flow control characters too. */
 void terminal_init(void)
 {
-    cbreak();
-    nonl();
-    noecho();
-    disable_extended_io();
-    disable_signals();
-    if (!ISSET(PRESERVE))
-	disable_flow_control();
+    static struct termios newterm;
+    static bool newterm_set = FALSE;
+
+    /* Slang curses emulation brain damage, part 2: Slang doesn't
+     * implement some of these curses calls properly, so there's no way
+     * to properly reinitialize the terminal using them.  We have to
+     * save the termios state on the first call and restore it on
+     * subsequent calls. */
+    if (!newterm_set) {
+	cbreak();
+	nonl();
+	noecho();
+	disable_extended_io();
+	disable_signals();
+	if (!ISSET(PRESERVE))
+	    disable_flow_control();
+
+	tcgetattr(0, &newterm);
+	newterm_set = TRUE;
+    } else
+	tcsetattr(0, TCSANOW, &newterm);
 }
 
 /* Read in a character, interpret it as a shortcut or toggle if

src/nano.h

@@ -64,7 +64,7 @@
 #ifdef USE_SLANG
 /* Slang support. */
 #include <slcurses.h>
-/* Slang curses emulation brain damage, part 2: Slang doesn't define the
+/* Slang curses emulation brain damage, part 3: Slang doesn't define the
  * curses equivalents of the Insert or Delete keys. */
 #define KEY_DC SL_KEY_DELETE
 #define KEY_IC SL_KEY_IC

src/winio.c

@@ -2976,7 +2976,7 @@ void edit_update(update_type location)
 void total_redraw(void)
 {
 #ifdef USE_SLANG
-    /* Slang curses emulation brain damage, part 3: Slang doesn't define
+    /* Slang curses emulation brain damage, part 4: Slang doesn't define
      * curscr. */
     SLsmg_touch_screen();
     SLsmg_refresh();