build: allow IWYU to fix includes for all .c files

Allow Include What You Use to remove unnecessary includes and only
include what is necessary. This helps with reducing compilation times
and makes it easier to visualise which dependencies are actually
required.

Work on https://github.com/neovim/neovim/issues/549, but doesn't close
it since this only works fully for .c files and not headers.

4 files changed, 35 insertions, 15 deletions

diff --git a/src/nvim/tui/input.c b/src/nvim/tui/input.c
index 2089686e5e..9171f79c37 100644
--- a/src/nvim/tui/input.c
+++ b/src/nvim/tui/input.c
@@ -1,20 +1,32 @@
 // This is an open source non-commercial project. Dear PVS-Studio, please check
 // it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
 
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "nvim/api/private/defs.h"
 #include "nvim/api/private/helpers.h"
 #include "nvim/api/vim.h"
 #include "nvim/ascii.h"
 #include "nvim/autocmd.h"
 #include "nvim/charset.h"
-#include "nvim/ex_docmd.h"
+#include "nvim/event/defs.h"
+#include "nvim/event/multiqueue.h"
+#include "nvim/globals.h"
+#include "nvim/log.h"
 #include "nvim/macros.h"
 #include "nvim/main.h"
+#include "nvim/map.h"
+#include "nvim/memory.h"
+#include "nvim/message.h"
 #include "nvim/option.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/tui/input.h"
+#include "nvim/tui/input_defs.h"
 #include "nvim/tui/tui.h"
-#include "nvim/vim.h"
 #ifdef MSWIN
 # include "nvim/os/os_win_console.h"
 #endif
diff --git a/src/nvim/tui/input.h b/src/nvim/tui/input.h
index 0b60394850..5df108b107 100644
--- a/src/nvim/tui/input.h
+++ b/src/nvim/tui/input.h
@@ -2,10 +2,14 @@
 #define NVIM_TUI_INPUT_H
 
 #include <stdbool.h>
+#include <stdint.h>
 #include <termkey.h>
+#include <uv.h>
 
+#include "nvim/event/loop.h"
 #include "nvim/event/stream.h"
 #include "nvim/event/time.h"
+#include "nvim/rbuffer.h"
 #include "nvim/tui/input_defs.h"
 #include "nvim/tui/tui.h"
 
diff --git a/src/nvim/tui/terminfo.c b/src/nvim/tui/terminfo.c
index 229e340dc3..0f6ae03d35 100644
--- a/src/nvim/tui/terminfo.c
+++ b/src/nvim/tui/terminfo.c
@@ -8,14 +8,16 @@
 #include <unibilium.h>
 
 #include "nvim/globals.h"
-#include "nvim/log.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
-#include "nvim/os/os.h"
 #include "nvim/tui/terminfo.h"
 #include "nvim/tui/terminfo_defs.h"
 
+#ifdef __FreeBSD__
+# include "nvim/os/os.h"
+#endif
+
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "tui/terminfo.c.generated.h"
 #endif
diff --git a/src/nvim/tui/tui.c b/src/nvim/tui/tui.c
index e2d37860c4..be7658616f 100644
--- a/src/nvim/tui/tui.c
+++ b/src/nvim/tui/tui.c
@@ -4,31 +4,35 @@
 // Terminal UI functions. Invoked (by ui_bridge.c) on the TUI thread.
 
 #include <assert.h>
-#include <limits.h>
+#include <signal.h>
 #include <stdbool.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include <unibilium.h>
 #include <uv.h>
-#if defined(HAVE_TERMIOS_H)
-# include <termios.h>
-#endif
 
+#include "auto/config.h"
 #include "klib/kvec.h"
-#include "nvim/api/private/helpers.h"
-#include "nvim/api/vim.h"
+#include "nvim/api/private/defs.h"
 #include "nvim/ascii.h"
+#include "nvim/event/defs.h"
 #include "nvim/event/loop.h"
+#include "nvim/event/multiqueue.h"
 #include "nvim/event/signal.h"
-#include "nvim/highlight.h"
+#include "nvim/event/stream.h"
+#include "nvim/globals.h"
+#include "nvim/grid_defs.h"
+#include "nvim/highlight_defs.h"
 #include "nvim/log.h"
 #include "nvim/main.h"
-#include "nvim/map.h"
+#include "nvim/mbyte.h"
 #include "nvim/memory.h"
+#include "nvim/message.h"
 #include "nvim/option.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/os/signal.h"
-#include "nvim/os/tty.h"
 #include "nvim/ui.h"
 #include "nvim/vim.h"
 #ifdef MSWIN
@@ -36,8 +40,6 @@
 #endif
 #include "nvim/cursor_shape.h"
 #include "nvim/macros.h"
-#include "nvim/strings.h"
-#include "nvim/syntax.h"
 #include "nvim/tui/input.h"
 #include "nvim/tui/terminfo.h"
 #include "nvim/tui/tui.h"