refactor: Remove term modules and termcap options

- Removed term.c, term.h and term_defs.h
- Tests for T_* values were removed. screen.c was simplified as a
  consequence(the best strategy for drawing is implemented in the UI layer)
- Redraw functions now call ui.c functions directly. Updates are flushed with
  `ui_flush()`
- Removed all termcap options(they now return empty strings for compatibility)
- &term/&ttybuiltin options return a constant value(nvim)
- &t_Co is still available, but it mirrors t_colors directly
- Remove cursor tracking from screen.c and the `screen_start` function. Now the
  UI is expected to maintain cursor state across any call, and reset it when
  resized.
- Remove unused code

1 files changed, 0 insertions, 58 deletions

diff --git a/src/nvim/term.h b/src/nvim/term.h
deleted file mode 100644
index 3f70f484a7..0000000000
--- a/src/nvim/term.h
+++ /dev/null
@@ -1,58 +0,0 @@
-#ifndef NVIM_TERM_H
-#define NVIM_TERM_H
-
-/* Size of the buffer used for tgetent().  Unfortunately this is largely
- * undocumented, some systems use 1024.  Using a buffer that is too small
- * causes a buffer overrun and a crash.  Use the maximum known value to stay
- * on the safe side. */
-#define TBUFSZ 2048             /* buffer size for termcap entry */
-
-/* Codes for mouse button events in lower three bits: */
-#define MOUSE_LEFT     0x00
-#define MOUSE_MIDDLE   0x01
-#define MOUSE_RIGHT    0x02
-#define MOUSE_RELEASE  0x03
-
-/* bit masks for modifiers: */
-#define MOUSE_SHIFT    0x04
-#define MOUSE_ALT      0x08
-#define MOUSE_CTRL     0x10
-
-/* mouse buttons that are handled like a key press (GUI only) */
-/* Note that the scroll wheel keys are inverted: MOUSE_5 scrolls lines up but
- * the result of this is that the window moves down, similarly MOUSE_6 scrolls
- * columns left but the window moves right. */
-#define MOUSE_4        0x100   /* scroll wheel down */
-#define MOUSE_5        0x200   /* scroll wheel up */
-
-#define MOUSE_X1       0x300 /* Mouse-button X1 (6th) */
-#define MOUSE_X2       0x400 /* Mouse-button X2 */
-
-#define MOUSE_6        0x500   /* scroll wheel left */
-#define MOUSE_7        0x600   /* scroll wheel right */
-
-/* 0x20 is reserved by xterm */
-#define MOUSE_DRAG_XTERM   0x40
-
-#define MOUSE_DRAG     (0x40 | MOUSE_RELEASE)
-
-/* Lowest button code for using the mouse wheel (xterm only) */
-#define MOUSEWHEEL_LOW         0x60
-
-#define MOUSE_CLICK_MASK       0x03
-
-#define NUM_MOUSE_CLICKS(code) \
-  (((unsigned)((code) & 0xC0) >> 6) + 1)
-
-#define SET_NUM_MOUSE_CLICKS(code, num) \
-  (code) = ((code) & 0x3f) | ((((num) - 1) & 3) << 6)
-
-/* Added to mouse column for GUI when 'mousefocus' wants to give focus to a
- * window by simulating a click on its status line.  We could use up to 128 *
- * 128 = 16384 columns, now it's reduced to 10000. */
-#define MOUSE_COLOFF 10000
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "term.h.generated.h"
-#endif
-#endif  // NVIM_TERM_H