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, 5 insertions, 5 deletions

diff --git a/src/nvim/os/shell.c b/src/nvim/os/shell.c
index d481d6af56..32c7ea564d 100644
--- a/src/nvim/os/shell.c
+++ b/src/nvim/os/shell.c
@@ -17,7 +17,7 @@
 #include "nvim/vim.h"
 #include "nvim/message.h"
 #include "nvim/memory.h"
-#include "nvim/term.h"
+#include "nvim/ui.h"
 #include "nvim/misc2.h"
 #include "nvim/screen.h"
 #include "nvim/memline.h"
@@ -99,7 +99,7 @@ int os_call_shell(char_u *cmd, ShellOpts opts, char_u *extra_args)
   char *output = NULL, **output_ptr = NULL;
   int current_state = State;
   bool forward_output = true;
-  out_flush();
+  ui_flush();
 
   // While the child is running, ignore terminating signals
   signal_reject_deadly();
@@ -421,7 +421,7 @@ static size_t write_output(char *output, size_t remaining, bool to_buffer,
       if (to_buffer) {
         ml_append(curwin->w_cursor.lnum++, (char_u *)output, 0, false);
       } else {
-        screen_del_lines(0, 0, 1, (int)Rows, true, NULL);
+        screen_del_lines(0, 0, 1, (int)Rows, NULL);
         screen_puts_len((char_u *)output, (int)off, lastrow, 0, 0);
       }
       size_t skip = off + 1;
@@ -446,7 +446,7 @@ static size_t write_output(char *output, size_t remaining, bool to_buffer,
         // remember that the NL was missing
         curbuf->b_no_eol_lnum = curwin->w_cursor.lnum;
       } else {
-        screen_del_lines(0, 0, 1, (int)Rows, true, NULL);
+        screen_del_lines(0, 0, 1, (int)Rows, NULL);
         screen_puts_len((char_u *)output, (int)remaining, lastrow, 0, 0);
       }
       output += remaining;
@@ -455,7 +455,7 @@ static size_t write_output(char *output, size_t remaining, bool to_buffer,
     }
   }
 
-  out_flush();
+  ui_flush();
 
   return (size_t)(output - start);
 }