ui: Remove/adapt some old code for a big UI refactor

- Remove abstract_ui global, now it is always active
- Remove some terminal handling code
- Remove unused functions
- Remove HAVE_TGETENT/TERMINFO/TERMIOS/IOCTL #ifdefs
- Remove tgetent/terminfo from version.c
- Remove curses/terminfo dependencies
- Only start/stop termcap when starting/exiting the program
- msg_use_printf will return true if there are no attached UIs(
  messages will be written to stdout)
- Remove `ex_winpos`(implement `:winpos` with `ex_ni`)

1 files changed, 5 insertions, 25 deletions

diff --git a/src/nvim/option.c b/src/nvim/option.c
index 71d19e24f1..f026663ae5 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -4226,23 +4226,6 @@ did_set_string_option (
 
   }
 
-
-
-#if defined(FEAT_MOUSE_TTY) && defined(UNIX)
-  /* 'ttymouse' */
-  else if (varp == &p_ttym) {
-    /* Switch the mouse off before changing the escape sequences used for
-     * that. */
-    mch_setmouse(FALSE);
-    if (opt_strings_flags(p_ttym, p_ttym_values, &ttym_flags, FALSE) != OK)
-      errmsg = e_invarg;
-    else
-      check_mouse_termcode();
-    if (termcap_active)
-      setmouse();               /* may switch it on again */
-  }
-#endif
-
   /* 'selection' */
   else if (varp == &p_sel) {
     if (*p_sel == NUL
@@ -5439,8 +5422,7 @@ set_num_option (
       curbuf->b_p_iminsert = B_IMODE_NONE;
     }
     p_iminsert = curbuf->b_p_iminsert;
-    if (termcap_active)         /* don't do this in the alternate screen */
-      showmode();
+    showmode();
     /* Show/unshow value of 'keymap' in status lines. */
     status_redraw_curbuf();
   } else if (pp == &p_window) {
@@ -5559,12 +5541,11 @@ set_num_option (
    */
   if (old_Rows != Rows || old_Columns != Columns) {
     /* Changing the screen size is not allowed while updating the screen. */
-    if (updating_screen)
+    if (updating_screen) {
       *pp = old_value;
-    else if (full_screen
-             )
-      screen_resize((int)Columns, (int)Rows, TRUE);
-    else {
+    } else if (full_screen) {
+      screen_resize((int)Columns, (int)Rows);
+    } else {
       /* Postpone the resizing; check the size and cmdline position for
        * messages. */
       check_shellsize();
@@ -6414,7 +6395,6 @@ void clear_termoptions(void)
    */
   mch_setmouse(FALSE);              /* switch mouse off */
   mch_restore_title(3);             /* restore window titles */
-  stoptermcap();                        /* stop termcap mode */
 
   free_termoptions();
 }