refactor: reorganize option header files (#25437)

- Move vimoption_T to option.h
- option_defs.h is for option-related types
- option_vars.h corresponds to Vim's option.h
- option_defs.h and option_vars.h don't include each other

scripts/vim-patch.sh

@@ -288,6 +288,10 @@ preprocess_patch() {
   LC_ALL=C sed -Ee 's/( [ab]\/src\/nvim)\/keymap\.h/\1\/keycodes.h/g' \
     "$file" > "$file".tmp && mv "$file".tmp "$file"
 
+  # Rename option.h to option_vars.h
+  LC_ALL=C sed -Ee 's/( [ab]\/src\/nvim)\/option\.h/\1\/option_vars.h/g' \
+    "$file" > "$file".tmp && mv "$file".tmp "$file"
+
   # Rename terminal.txt to nvim_terminal_emulator.txt
   LC_ALL=C sed -Ee 's/( [ab]\/runtime\/doc)\/terminal\.txt/\1\/nvim_terminal_emulator.txt/g' \
     "$file" > "$file".tmp && mv "$file".tmp "$file"

src/nvim/api/vim.c

@@ -55,6 +55,7 @@
 #include "nvim/msgpack_rpc/unpacker.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os_defs.h"

src/nvim/arabic.c

@@ -28,7 +28,7 @@
 #include "nvim/ascii.h"
 #include "nvim/macros.h"
 #include "nvim/mbyte.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/vim.h"
 
 // Unicode values for Arabic characters.

src/nvim/arglist.c

@@ -31,6 +31,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/path.h"
 #include "nvim/pos.h"

src/nvim/autocmd.c

@@ -34,7 +34,7 @@
 #include "nvim/memline_defs.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/buffer.c

@@ -79,6 +79,7 @@
 #include "nvim/move.h"
 #include "nvim/normal.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"

src/nvim/buffer_defs.h

@@ -28,7 +28,7 @@ typedef struct {
 #include "nvim/mapping_defs.h"
 #include "nvim/mark_defs.h"
 #include "nvim/marktree.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/pos.h"
 #include "nvim/statusline_defs.h"
 #include "nvim/undo_defs.h"

src/nvim/bufwrite.c

@@ -37,6 +37,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/change.c

@@ -39,6 +39,7 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/time.h"
 #include "nvim/plines.h"
 #include "nvim/pos.h"

src/nvim/charset.h

@@ -7,6 +7,7 @@
 #include "nvim/buffer_defs.h"
 #include "nvim/eval/typval_defs.h"
 #include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/pos.h"
 #include "nvim/strings.h"
 

src/nvim/cmdexpand.c

@@ -48,6 +48,7 @@
 #include "nvim/menu.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/lang.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"

src/nvim/cmdhist.c

@@ -22,7 +22,7 @@
 #include "nvim/macros.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/pos.h"
 #include "nvim/regexp.h"
 #include "nvim/strings.h"

src/nvim/cursor.c

@@ -21,6 +21,7 @@
 #include "nvim/memory.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/plines.h"
 #include "nvim/pos.h"
 #include "nvim/state.h"

src/nvim/cursor_shape.c

@@ -17,7 +17,7 @@
 #include "nvim/log.h"
 #include "nvim/macros.h"
 #include "nvim/memory.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/strings.h"
 #include "nvim/ui.h"
 #include "nvim/vim.h"

src/nvim/diff.c

@@ -47,6 +47,7 @@
 #include "nvim/move.h"
 #include "nvim/normal.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/os.h"

src/nvim/digraph.c

@@ -31,7 +31,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/normal.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/runtime.h"
 #include "nvim/strings.h"

src/nvim/drawline.c

@@ -38,6 +38,7 @@
 #include "nvim/memory.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/plines.h"
 #include "nvim/pos.h"
 #include "nvim/quickfix.h"

src/nvim/drawscreen.c

@@ -94,6 +94,7 @@
 #include "nvim/move.h"
 #include "nvim/normal.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/os_defs.h"
 #include "nvim/plines.h"
 #include "nvim/popupmenu.h"

src/nvim/edit.c

@@ -48,6 +48,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/plines.h"
 #include "nvim/popupmenu.h"

src/nvim/eval.c

@@ -60,6 +60,7 @@
 #include "nvim/msgpack_rpc/channel_defs.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/fileio.h"
 #include "nvim/os/fs_defs.h"

src/nvim/eval/funcs.c

@@ -87,6 +87,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/dl.h"
 #include "nvim/os/fileio.h"

src/nvim/eval/typval.c

@@ -50,6 +50,14 @@ typedef struct {
   bool item_compare_func_err;
 } sortinfo_T;
 
+/// Structure representing one list item, used for sort array.
+typedef struct {
+  listitem_T *item;  ///< Sorted list item.
+  int idx;  ///< Sorted list item index.
+} ListSortItem;
+
+typedef int (*ListSorter)(const void *, const void *);
+
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "eval/typval.c.generated.h"
 #endif

src/nvim/eval/typval_defs.h

@@ -273,6 +273,12 @@ typedef struct {
   linenr_T sc_lnum;  ///< line number
 } sctx_T;
 
+/// Stores an identifier of a script or channel that last set an option.
+typedef struct {
+  sctx_T script_ctx;       /// script context where the option was last set
+  uint64_t channel_id;     /// Only used when script_id is SID_API_CLIENT.
+} LastSet;
+
 /// Maximum number of function arguments
 enum { MAX_FUNC_ARGS = 20, };
 /// Short variable name length
@@ -367,12 +373,4 @@ typedef struct list_stack_S {
   struct list_stack_S *prev;
 } list_stack_T;
 
-/// Structure representing one list item, used for sort array.
-typedef struct {
-  listitem_T *item;  ///< Sorted list item.
-  int idx;  ///< Sorted list item index.
-} ListSortItem;
-
-typedef int (*ListSorter)(const void *, const void *);
-
 #endif  // NVIM_EVAL_TYPVAL_DEFS_H

src/nvim/eval/userfunc.c

@@ -37,7 +37,7 @@
 #include "nvim/mbyte.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/path.h"
 #include "nvim/profile.h"

src/nvim/eval/vars.c

@@ -36,6 +36,7 @@
 #include "nvim/message.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/os.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"

src/nvim/eval/window.c

@@ -25,7 +25,6 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/move.h"
-#include "nvim/option_defs.h"
 #include "nvim/pos.h"
 #include "nvim/types.h"
 #include "nvim/vim.h"

src/nvim/eval/window.h

@@ -11,6 +11,7 @@
 #include "nvim/globals.h"
 #include "nvim/mark.h"
 #include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/os.h"
 #include "nvim/pos.h"
 #include "nvim/vim.h"

src/nvim/ex_cmds.c

@@ -66,6 +66,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"

src/nvim/ex_cmds2.c

@@ -36,7 +36,7 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/normal.h"
-#include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/os_defs.h"
 #include "nvim/path.h"
 #include "nvim/pos.h"

src/nvim/ex_docmd.c

@@ -61,6 +61,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/ex_eval.c

@@ -25,7 +25,7 @@
 #include "nvim/globals.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/pos.h"
 #include "nvim/regexp.h"
 #include "nvim/runtime.h"

src/nvim/ex_getln.c

@@ -58,6 +58,8 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/ex_getln.h

@@ -6,6 +6,7 @@
 #include "klib/kvec.h"
 #include "nvim/eval/typval_defs.h"
 #include "nvim/ex_cmds_defs.h"
+#include "nvim/option_defs.h"
 #include "nvim/types.h"
 
 struct cmdline_info;

src/nvim/ex_session.c

@@ -31,6 +31,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"
 #include "nvim/pos.h"

src/nvim/file_search.c

@@ -64,6 +64,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/fileio.c

@@ -47,6 +47,7 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"

src/nvim/fold.c

@@ -41,7 +41,7 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/ops.h"
-#include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/plines.h"
 #include "nvim/pos.h"

src/nvim/generators/gen_options.lua

@@ -189,7 +189,6 @@ local function dump_option(i, o)
 end
 
 w([[
-#include "nvim/ex_cmds.h"
 #include "nvim/ex_getln.h"
 #include "nvim/insexpand.h"
 #include "nvim/mapping.h"
@@ -198,8 +197,6 @@ w([[
 #include "nvim/optionstr.h"
 #include "nvim/quickfix.h"
 #include "nvim/runtime.h"
-#include "nvim/spell.h"
-#include "nvim/spellfile.h"
 #include "nvim/tag.h"
 #include "nvim/window.h"
 

src/nvim/getchar.c

@@ -48,7 +48,7 @@
 #include "nvim/move.h"
 #include "nvim/normal.h"
 #include "nvim/ops.h"
-#include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fileio.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/grid.c

@@ -29,7 +29,7 @@
 #include "nvim/map.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/types.h"
 #include "nvim/ui.h"
 #include "nvim/vim.h"

src/nvim/help.c

@@ -30,6 +30,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/highlight.h

@@ -8,6 +8,7 @@
 #include "nvim/buffer_defs.h"
 #include "nvim/highlight_defs.h"
 #include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/ui.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS

src/nvim/highlight_group.c

@@ -37,6 +37,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/time.h"
 #include "nvim/runtime.h"
 #include "nvim/strings.h"

src/nvim/indent.c

@@ -32,6 +32,7 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/plines.h"

src/nvim/indent_c.c

@@ -20,6 +20,7 @@
 #include "nvim/memline.h"
 #include "nvim/memory.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/plines.h"
 #include "nvim/pos.h"
 #include "nvim/search.h"

src/nvim/insexpand.c

@@ -46,6 +46,8 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/time.h"

src/nvim/insexpand.h

@@ -4,6 +4,7 @@
 #include <stdbool.h>
 
 #include "nvim/macros.h"
+#include "nvim/option_defs.h"
 #include "nvim/vim.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS

src/nvim/keycodes.h

@@ -5,6 +5,7 @@
 
 #include "nvim/ascii.h"
 #include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/strings.h"
 
 // Keycode definitions for special keys.

src/nvim/lua/executor.c

@@ -49,7 +49,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/msgpack_rpc/channel.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fileio.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"

src/nvim/main.c

@@ -60,7 +60,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/fileio.h"
 #include "nvim/os/input.h"

src/nvim/mapping.c

@@ -39,6 +39,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/pos.h"
 #include "nvim/regexp.h"
 #include "nvim/regexp_defs.h"

src/nvim/mark.c

@@ -31,7 +31,7 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/normal.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"

src/nvim/match.c

@@ -29,7 +29,7 @@
 #include "nvim/memline.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/pos.h"
 #include "nvim/profile.h"
 #include "nvim/regexp.h"

src/nvim/mbyte.c

@@ -60,7 +60,7 @@
 #include "nvim/memline.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/os.h"
 #include "nvim/os/os_defs.h"

src/nvim/memline.c

@@ -73,6 +73,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/memory.c

@@ -29,6 +29,7 @@
 #include "nvim/memfile.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
+#include "nvim/option_vars.h"
 #include "nvim/sign.h"
 #include "nvim/ui.h"
 #include "nvim/usercmd.h"

src/nvim/menu.c

@@ -29,7 +29,7 @@
 #include "nvim/menu.h"
 #include "nvim/menu_defs.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/popupmenu.h"
 #include "nvim/pos.h"
 #include "nvim/state.h"

src/nvim/message.c

@@ -43,6 +43,7 @@
 #include "nvim/mouse.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/os/time.h"

src/nvim/mouse.c

@@ -33,6 +33,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/plines.h"
 #include "nvim/popupmenu.h"
 #include "nvim/pos.h"

src/nvim/move.c

@@ -38,6 +38,7 @@
 #include "nvim/mouse.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/plines.h"
 #include "nvim/popupmenu.h"
 #include "nvim/pos.h"

src/nvim/normal.c

@@ -56,6 +56,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/os/time.h"
 #include "nvim/plines.h"

src/nvim/ops.c

@@ -49,6 +49,8 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/os/time.h"
 #include "nvim/plines.h"

src/nvim/ops.h

@@ -11,6 +11,7 @@
 #include "nvim/extmark.h"
 #include "nvim/macros.h"
 #include "nvim/normal.h"
+#include "nvim/option_defs.h"
 #include "nvim/os/time.h"
 #include "nvim/pos.h"
 #include "nvim/types.h"

src/nvim/option.c

@@ -76,6 +76,7 @@
 #include "nvim/ops.h"
 #include "nvim/option.h"
 #include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/os/lang.h"

src/nvim/option.h

@@ -1,15 +1,95 @@
 #ifndef NVIM_OPTION_H
 #define NVIM_OPTION_H
 
+#include <stdint.h>
+
 #include "nvim/api/private/helpers.h"
+#include "nvim/eval/typval_defs.h"
 #include "nvim/ex_cmds_defs.h"
+#include "nvim/option_defs.h"
 
-// flags for buf_copy_options()
-#define BCO_ENTER       1       // going to enter the buffer
-#define BCO_ALWAYS      2       // always copy the options
-#define BCO_NOHELP      4       // don't touch the help related options
+/// The options that are local to a window or buffer have "indir" set to one of
+/// these values.  Special values:
+/// PV_NONE: global option.
+/// PV_WIN is added: window-local option
+/// PV_BUF is added: buffer-local option
+/// PV_BOTH is added: global option which also has a local value.
+enum {
+  PV_BOTH = 0x1000,
+  PV_WIN  = 0x2000,
+  PV_BUF  = 0x4000,
+  PV_MASK = 0x0fff,
+};
+#define OPT_WIN(x)  (idopt_T)(PV_WIN + (int)(x))
+#define OPT_BUF(x)  (idopt_T)(PV_BUF + (int)(x))
+#define OPT_BOTH(x) (idopt_T)(PV_BOTH + (int)(x))
 
-#define MAX_NUMBERWIDTH 20      // used for 'numberwidth' and 'statuscolumn'
+/// WV_ and BV_ values get typecasted to this for the "indir" field
+typedef enum {
+  PV_NONE = 0,
+  PV_MAXVAL = 0xffff,  ///< to avoid warnings for value out of range
+} idopt_T;
+
+// Options local to a window have a value local to a buffer and global to all
+// buffers.  Indicate this by setting "var" to VAR_WIN.
+#define VAR_WIN ((char *)-1)
+
+typedef struct vimoption {
+  char *fullname;    ///< full option name
+  char *shortname;   ///< permissible abbreviation
+  uint32_t flags;    ///< see above
+  void *var;         ///< global option: pointer to variable;
+                     ///< window-local option: VAR_WIN;
+                     ///< buffer-local option: global value
+  idopt_T indir;     ///< global option: PV_NONE;
+                     ///< local option: indirect option index
+                     ///< callback function to invoke after an option is modified to validate and
+                     ///< apply the new value.
+  opt_did_set_cb_T opt_did_set_cb;
+  void *def_val;     ///< default values for variable (neovim!!)
+  LastSet last_set;  ///< script in which the option was last set
+} vimoption_T;
+
+/// flags for buf_copy_options()
+enum {
+  BCO_ENTER  = 1,  ///< going to enter the buffer
+  BCO_ALWAYS = 2,  ///< always copy the options
+  BCO_NOHELP = 4,  ///< don't touch the help related options
+};
+
+/// Flags for option-setting functions
+///
+/// When OPT_GLOBAL and OPT_LOCAL are both missing, set both local and global
+/// values, get local value.
+typedef enum {
+  OPT_FREE      = 0x01,   ///< Free old value if it was allocated.
+  OPT_GLOBAL    = 0x02,   ///< Use global value.
+  OPT_LOCAL     = 0x04,   ///< Use local value.
+  OPT_MODELINE  = 0x08,   ///< Option in modeline.
+  OPT_WINONLY   = 0x10,   ///< Only set window-local options.
+  OPT_NOWIN     = 0x20,   ///< Don’t set window-local options.
+  OPT_ONECOLUMN = 0x40,   ///< list options one per line
+  OPT_NO_REDRAW = 0x80,   ///< ignore redraw flags on option
+  OPT_SKIPRTP   = 0x100,  ///< "skiprtp" in 'sessionoptions'
+} OptionFlags;
+
+/// Return value from get_option_value_strict
+enum {
+  SOPT_BOOL   = 0x01,  ///< Boolean option
+  SOPT_NUM    = 0x02,  ///< Number option
+  SOPT_STRING = 0x04,  ///< String option
+  SOPT_GLOBAL = 0x08,  ///< Option has global value
+  SOPT_WIN    = 0x10,  ///< Option has window-local value
+  SOPT_BUF    = 0x20,  ///< Option has buffer-local value
+  SOPT_UNSET  = 0x40,  ///< Option does not have local value set
+};
+
+/// Option types for various functions in option.c
+enum {
+  SREQ_GLOBAL = 0,  ///< Request global option value
+  SREQ_WIN    = 1,  ///< Request window-local option value
+  SREQ_BUF    = 2,  ///< Request buffer-local option value
+};
 
 // OptVal helper macros.
 #define NIL_OPTVAL ((OptVal) { .type = kOptValTypeNil })

src/nvim/option_vars.h

@@ -0,0 +1,946 @@
+#ifndef NVIM_OPTION_VARS_H
+#define NVIM_OPTION_VARS_H
+
+#include "nvim/macros.h"
+#include "nvim/types.h"
+
+// option_vars.h: definition of global variables for settable options
+
+// Option Flags
+#define P_BOOL         0x01U        ///< the option is boolean
+#define P_NUM          0x02U        ///< the option is numeric
+#define P_STRING       0x04U        ///< the option is a string
+#define P_ALLOCED      0x08U        ///< the string option is in allocated memory,
+                                    ///< must use free_string_option() when
+                                    ///< assigning new value. Not set if default is
+                                    ///< the same.
+#define P_EXPAND       0x10U        ///< environment expansion.  NOTE: P_EXPAND can
+                                    ///< never be used for local or hidden options
+#define P_NODEFAULT    0x40U        ///< don't set to default value
+#define P_DEF_ALLOCED  0x80U        ///< default value is in allocated memory, must
+                                    ///< use free() when assigning new value
+#define P_WAS_SET      0x100U       ///< option has been set/reset
+#define P_NO_MKRC      0x200U       ///< don't include in :mkvimrc output
+
+// when option changed, what to display:
+#define P_UI_OPTION    0x400U       ///< send option to remote UI
+#define P_RTABL        0x800U       ///< redraw tabline
+#define P_RSTAT        0x1000U      ///< redraw status lines
+#define P_RWIN         0x2000U      ///< redraw current window and recompute text
+#define P_RBUF         0x4000U      ///< redraw current buffer and recompute text
+#define P_RALL         0x6000U      ///< redraw all windows
+#define P_RCLR         0x7000U      ///< clear and redraw all
+
+#define P_COMMA        0x8000U      ///< comma separated list
+#define P_ONECOMMA     0x18000U     ///< P_COMMA and cannot have two consecutive
+                                    ///< commas
+#define P_NODUP        0x20000U     ///< don't allow duplicate strings
+#define P_FLAGLIST     0x40000U     ///< list of single-char flags
+
+#define P_SECURE       0x80000U     ///< cannot change in modeline or secure mode
+#define P_GETTEXT      0x100000U    ///< expand default value with _()
+#define P_NOGLOB       0x200000U    ///< do not use local value for global vimrc
+#define P_NFNAME       0x400000U    ///< only normal file name chars allowed
+#define P_INSECURE     0x800000U    ///< option was set from a modeline
+#define P_PRI_MKRC     0x1000000U   ///< priority for :mkvimrc (setting option
+                                    ///< has side effects)
+#define P_NO_ML        0x2000000U   ///< not allowed in modeline
+#define P_CURSWANT     0x4000000U   ///< update curswant required; not needed
+                                    ///< when there is a redraw flag
+#define P_NDNAME       0x8000000U   ///< only normal dir name chars allowed
+#define P_RWINONLY     0x10000000U  ///< only redraw current window
+#define P_MLE          0x20000000U  ///< under control of 'modelineexpr'
+#define P_FUNC         0x40000000U  ///< accept a function reference or a lambda
+
+#define P_NO_DEF_EXP   0x80000000U  ///< Do not expand default value.
+
+#define HIGHLIGHT_INIT \
+  "8:SpecialKey,~:EndOfBuffer,z:TermCursor,Z:TermCursorNC,@:NonText,d:Directory,e:ErrorMsg," \
+  "i:IncSearch,l:Search,y:CurSearch,m:MoreMsg,M:ModeMsg,n:LineNr,a:LineNrAbove,b:LineNrBelow," \
+  "N:CursorLineNr,G:CursorLineSign,O:CursorLineFold" \
+  "r:Question,s:StatusLine,S:StatusLineNC,c:VertSplit,t:Title,v:Visual,V:VisualNOS,w:WarningMsg," \
+  "W:WildMenu,f:Folded,F:FoldColumn,A:DiffAdd,C:DiffChange,D:DiffDelete,T:DiffText,>:SignColumn," \
+  "-:Conceal,B:SpellBad,P:SpellCap,R:SpellRare,L:SpellLocal,+:Pmenu,=:PmenuSel," \
+  "[:PmenuKind,]:PmenuKindSel,{:PmenuExtra,}:PmenuExtraSel,x:PmenuSbar,X:PmenuThumb," \
+  "*:TabLine,#:TabLineSel,_:TabLineFill,!:CursorColumn,.:CursorLine,o:ColorColumn," \
+  "q:QuickFixLine,0:Whitespace,I:NormalNC"
+
+// Default values for 'errorformat'.
+// The "%f|%l| %m" one is used for when the contents of the quickfix window is
+// written to a file.
+#ifdef MSWIN
+# define DFLT_EFM \
+  "%f(%l) \\=: %t%*\\D%n: %m,%*[^\"]\"%f\"%*\\D%l: %m,%f(%l) \\=: %m,%*[^ ] %f %l: %m,%f:%l:%c:%m,%f(%l):%m,%f:%l:%m,%f|%l| %m"
+#else
+# define DFLT_EFM \
+  "%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%-Gg%\\?make[%*\\d]: *** [%f:%l:%m,%-Gg%\\?make: *** [%f:%l:%m,%-G%f:%l: (Each undeclared identifier is reported only once,%-G%f:%l: for each function it appears in.),%-GIn file included from %f:%l:%c:,%-GIn file included from %f:%l:%c\\,,%-GIn file included from %f:%l:%c,%-GIn file included from %f:%l,%-G%*[ ]from %f:%l:%c,%-G%*[ ]from %f:%l:,%-G%*[ ]from %f:%l\\,,%-G%*[ ]from %f:%l,%f:%l:%c:%m,%f(%l):%m,%f:%l:%m,\"%f\"\\, line %l%*\\D%c%*[^ ] %m,%D%*\\a[%*\\d]: Entering directory %*[`']%f',%X%*\\a[%*\\d]: Leaving directory %*[`']%f',%D%*\\a: Entering directory %*[`']%f',%X%*\\a: Leaving directory %*[`']%f',%DMaking %*\\a in %f,%f|%l| %m"
+#endif
+
+#define DFLT_GREPFORMAT "%f:%l:%m,%f:%l%m,%f  %l%m"
+
+// default values for b_p_ff 'fileformat' and p_ffs 'fileformats'
+#define FF_DOS          "dos"
+#define FF_MAC          "mac"
+#define FF_UNIX         "unix"
+
+#ifdef USE_CRNL
+# define DFLT_FF        "dos"
+# define DFLT_FFS_VIM   "dos,unix"
+# define DFLT_FFS_VI    "dos,unix"      // also autodetect in compatible mode
+#else
+# define DFLT_FF       "unix"
+# define DFLT_FFS_VIM  "unix,dos"
+# define DFLT_FFS_VI  ""
+#endif
+
+// Possible values for 'encoding'
+#define ENC_UCSBOM     "ucs-bom"       // check for BOM at start of file
+
+// default value for 'encoding'
+#define ENC_DFLT       "utf-8"
+
+// end-of-line style
+#define EOL_UNKNOWN     (-1)    // not defined yet
+#define EOL_UNIX        0       // NL
+#define EOL_DOS         1       // CR NL
+#define EOL_MAC         2       // CR
+
+// Formatting options for p_fo 'formatoptions'
+#define FO_WRAP         't'
+#define FO_WRAP_COMS    'c'
+#define FO_RET_COMS     'r'
+#define FO_OPEN_COMS    'o'
+#define FO_NO_OPEN_COMS '/'
+#define FO_Q_COMS       'q'
+#define FO_Q_NUMBER     'n'
+#define FO_Q_SECOND     '2'
+#define FO_INS_VI       'v'
+#define FO_INS_LONG     'l'
+#define FO_INS_BLANK    'b'
+#define FO_MBYTE_BREAK  'm'     // break before/after multi-byte char
+#define FO_MBYTE_JOIN   'M'     // no space before/after multi-byte char
+#define FO_MBYTE_JOIN2  'B'     // no space between multi-byte chars
+#define FO_ONE_LETTER   '1'
+#define FO_WHITE_PAR    'w'     // trailing white space continues paragr.
+#define FO_AUTO         'a'     // automatic formatting
+#define FO_RIGOROUS_TW  ']'     // respect textwidth rigorously
+#define FO_REMOVE_COMS  'j'     // remove comment leaders when joining lines
+#define FO_PERIOD_ABBR  'p'     // don't break a single space after a period
+
+#define DFLT_FO_VI      "vt"
+#define DFLT_FO_VIM     "tcqj"
+#define FO_ALL          "tcro/q2vlb1mMBn,aw]jp"   // for do_set()
+
+// characters for the p_cpo option:
+#define CPO_ALTREAD     'a'     // ":read" sets alternate file name
+#define CPO_ALTWRITE    'A'     // ":write" sets alternate file name
+#define CPO_BAR         'b'     // "\|" ends a mapping
+#define CPO_BSLASH      'B'     // backslash in mapping is not special
+#define CPO_SEARCH      'c'
+#define CPO_CONCAT      'C'     // Don't concatenate sourced lines
+#define CPO_DOTTAG      'd'     // "./tags" in 'tags' is in current dir
+#define CPO_DIGRAPH     'D'     // No digraph after "r", "f", etc.
+#define CPO_EXECBUF     'e'
+#define CPO_EMPTYREGION 'E'     // operating on empty region is an error
+#define CPO_FNAMER      'f'     // set file name for ":r file"
+#define CPO_FNAMEW      'F'     // set file name for ":w file"
+#define CPO_INTMOD      'i'     // interrupt a read makes buffer modified
+#define CPO_INDENT      'I'     // remove auto-indent more often
+#define CPO_ENDOFSENT   'J'     // need two spaces to detect end of sentence
+#define CPO_KOFFSET     'K'     // don't wait for key code in mappings
+#define CPO_LITERAL     'l'     // take char after backslash in [] literal
+#define CPO_LISTWM      'L'     // 'list' changes wrapmargin
+#define CPO_SHOWMATCH   'm'
+#define CPO_MATCHBSL    'M'     // "%" ignores use of backslashes
+#define CPO_NUMCOL      'n'     // 'number' column also used for text
+#define CPO_LINEOFF     'o'
+#define CPO_OVERNEW     'O'     // silently overwrite new file
+#define CPO_LISP        'p'     // 'lisp' indenting
+#define CPO_FNAMEAPP    'P'     // set file name for ":w >>file"
+#define CPO_JOINCOL     'q'     // with "3J" use column after first join
+#define CPO_REDO        'r'
+#define CPO_REMMARK     'R'     // remove marks when filtering
+#define CPO_BUFOPT      's'
+#define CPO_BUFOPTGLOB  'S'
+#define CPO_TAGPAT      't'     // tag pattern is used for "n"
+#define CPO_UNDO        'u'     // "u" undoes itself
+#define CPO_BACKSPACE   'v'     // "v" keep deleted text
+#define CPO_FWRITE      'W'     // "w!" doesn't overwrite readonly files
+#define CPO_ESC         'x'
+#define CPO_REPLCNT     'X'     // "R" with a count only deletes chars once
+#define CPO_YANK        'y'
+#define CPO_KEEPRO      'Z'     // don't reset 'readonly' on ":w!"
+#define CPO_DOLLAR      '$'
+#define CPO_FILTER      '!'
+#define CPO_MATCH       '%'
+#define CPO_PLUS        '+'     // ":write file" resets 'modified'
+#define CPO_REGAPPEND   '>'     // insert NL when appending to a register
+#define CPO_SCOLON      ';'     // using "," and ";" will skip over char if
+                                // cursor would not move
+#define CPO_CHANGEW     '_'     // "cw" special-case
+// default values for Vim and Vi
+#define CPO_VIM         "aABceFs_"
+#define CPO_VI          "aAbBcCdDeEfFiIJKlLmMnoOpPqrRsStuvWxXyZ$!%+>;_"
+
+// characters for p_ww option:
+#define WW_ALL          "bshl<>[],~"
+
+// characters for p_mouse option:
+#define MOUSE_NORMAL    'n'             // use mouse in Normal mode
+#define MOUSE_VISUAL    'v'             // use mouse in Visual/Select mode
+#define MOUSE_INSERT    'i'             // use mouse in Insert mode
+#define MOUSE_COMMAND   'c'             // use mouse in Command-line mode
+#define MOUSE_HELP      'h'             // use mouse in help buffers
+#define MOUSE_RETURN    'r'             // use mouse for hit-return message
+#define MOUSE_A         "nvich"         // used for 'a' flag
+#define MOUSE_ALL       "anvichr"       // all possible characters
+#define MOUSE_NONE      ' '             // don't use Visual selection
+#define MOUSE_NONEF     'x'             // forced modeless selection
+
+// default vertical and horizontal mouse scroll values.
+// Note: This should be in sync with the default mousescroll option.
+#define MOUSESCROLL_VERT_DFLT   3
+#define MOUSESCROLL_HOR_DFLT    6
+
+#define COCU_ALL        "nvic"          // flags for 'concealcursor'
+
+/// characters for p_shm option:
+enum {
+  SHM_RO             = 'r',  ///< Readonly.
+  SHM_MOD            = 'm',  ///< Modified.
+  SHM_LINES          = 'l',  ///< "L" instead of "lines".
+  SHM_WRI            = 'w',  ///< "[w]" instead of "written".
+  SHM_ABBREVIATIONS  = 'a',  ///< Use abbreviations from #SHM_ALL_ABBREVIATIONS.
+  SHM_WRITE          = 'W',  ///< Don't use "written" at all.
+  SHM_TRUNC          = 't',  ///< Truncate file messages.
+  SHM_TRUNCALL       = 'T',  ///< Truncate all messages.
+  SHM_OVER           = 'o',  ///< Overwrite file messages.
+  SHM_OVERALL        = 'O',  ///< Overwrite more messages.
+  SHM_SEARCH         = 's',  ///< No search hit bottom messages.
+  SHM_ATTENTION      = 'A',  ///< No ATTENTION messages.
+  SHM_INTRO          = 'I',  ///< Intro messages.
+  SHM_COMPLETIONMENU = 'c',  ///< Completion menu messages.
+  SHM_COMPLETIONSCAN = 'C',  ///< Completion scanning messages.
+  SHM_RECORDING      = 'q',  ///< Short recording message.
+  SHM_FILEINFO       = 'F',  ///< No file info messages.
+  SHM_SEARCHCOUNT    = 'S',  ///< No search stats: '[1/10]'
+};
+/// Represented by 'a' flag.
+#define SHM_ALL_ABBREVIATIONS ((char[]) { \
+    SHM_RO, SHM_MOD, SHM_LINES, SHM_WRI, \
+    0 })
+
+// characters for p_go:
+#define GO_ASEL         'a'             // autoselect
+#define GO_ASELML       'A'             // autoselect modeless selection
+#define GO_BOT          'b'             // use bottom scrollbar
+#define GO_CONDIALOG    'c'             // use console dialog
+#define GO_DARKTHEME    'd'             // use dark theme variant
+#define GO_TABLINE      'e'             // may show tabline
+#define GO_FORG         'f'             // start GUI in foreground
+#define GO_GREY         'g'             // use grey menu items
+#define GO_HORSCROLL    'h'             // flexible horizontal scrolling
+#define GO_ICON         'i'             // use Vim icon
+#define GO_LEFT         'l'             // use left scrollbar
+#define GO_VLEFT        'L'             // left scrollbar with vert split
+#define GO_MENUS        'm'             // use menu bar
+#define GO_NOSYSMENU    'M'             // don't source system menu
+#define GO_POINTER      'p'             // pointer enter/leave callbacks
+#define GO_ASELPLUS     'P'             // autoselectPlus
+#define GO_RIGHT        'r'             // use right scrollbar
+#define GO_VRIGHT       'R'             // right scrollbar with vert split
+#define GO_TOOLBAR      'T'             // add toolbar
+#define GO_FOOTER       'F'             // add footer
+#define GO_VERTICAL     'v'             // arrange dialog buttons vertically
+#define GO_KEEPWINSIZE  'k'             // keep GUI window size
+#define GO_ALL "!aAbcdefFghilLmMpPrRtTvk"  // all possible flags for 'go'
+
+// flags for 'comments' option
+#define COM_NEST        'n'             // comments strings nest
+#define COM_BLANK       'b'             // needs blank after string
+#define COM_START       's'             // start of comment
+#define COM_MIDDLE      'm'             // middle of comment
+#define COM_END         'e'             // end of comment
+#define COM_AUTO_END    'x'             // last char of end closes comment
+#define COM_FIRST       'f'             // first line comment only
+#define COM_LEFT        'l'             // left adjusted
+#define COM_RIGHT       'r'             // right adjusted
+#define COM_NOBACK      'O'             // don't use for "O" command
+#define COM_ALL         "nbsmexflrO"    // all flags for 'comments' option
+#define COM_MAX_LEN     50              // maximum length of a part
+
+/// 'statusline' option flags
+enum {
+  STL_FILEPATH        = 'f',  ///< Path of file in buffer.
+  STL_FULLPATH        = 'F',  ///< Full path of file in buffer.
+  STL_FILENAME        = 't',  ///< Last part (tail) of file path.
+  STL_COLUMN          = 'c',  ///< Column og cursor.
+  STL_VIRTCOL         = 'v',  ///< Virtual column.
+  STL_VIRTCOL_ALT     = 'V',  ///< - with 'if different' display.
+  STL_LINE            = 'l',  ///< Line number of cursor.
+  STL_NUMLINES        = 'L',  ///< Number of lines in buffer.
+  STL_BUFNO           = 'n',  ///< Current buffer number.
+  STL_KEYMAP          = 'k',  ///< 'keymap' when active.
+  STL_OFFSET          = 'o',  ///< Offset of character under cursor.
+  STL_OFFSET_X        = 'O',  ///< - in hexadecimal.
+  STL_BYTEVAL         = 'b',  ///< Byte value of character.
+  STL_BYTEVAL_X       = 'B',  ///< - in hexadecimal.
+  STL_ROFLAG          = 'r',  ///< Readonly flag.
+  STL_ROFLAG_ALT      = 'R',  ///< - other display.
+  STL_HELPFLAG        = 'h',  ///< Window is showing a help file.
+  STL_HELPFLAG_ALT    = 'H',  ///< - other display.
+  STL_FILETYPE        = 'y',  ///< 'filetype'.
+  STL_FILETYPE_ALT    = 'Y',  ///< - other display.
+  STL_PREVIEWFLAG     = 'w',  ///< Window is showing the preview buf.
+  STL_PREVIEWFLAG_ALT = 'W',  ///< - other display.
+  STL_MODIFIED        = 'm',  ///< Modified flag.
+  STL_MODIFIED_ALT    = 'M',  ///< - other display.
+  STL_QUICKFIX        = 'q',  ///< Quickfix window description.
+  STL_PERCENTAGE      = 'p',  ///< Percentage through file.
+  STL_ALTPERCENT      = 'P',  ///< Percentage as TOP BOT ALL or NN%.
+  STL_ARGLISTSTAT     = 'a',  ///< Argument list status as (x of y).
+  STL_PAGENUM         = 'N',  ///< Page number (when printing).
+  STL_SHOWCMD         = 'S',  ///< 'showcmd' buffer
+  STL_FOLDCOL         = 'C',  ///< Fold column for 'statuscolumn'
+  STL_SIGNCOL         = 's',  ///< Sign column for 'statuscolumn'
+  STL_VIM_EXPR        = '{',  ///< Start of expression to substitute.
+  STL_SEPARATE        = '=',  ///< Separation between alignment sections.
+  STL_TRUNCMARK       = '<',  ///< Truncation mark if line is too long.
+  STL_USER_HL         = '*',  ///< Highlight from (User)1..9 or 0.
+  STL_HIGHLIGHT       = '#',  ///< Highlight name.
+  STL_TABPAGENR       = 'T',  ///< Tab page label nr.
+  STL_TABCLOSENR      = 'X',  ///< Tab page close nr.
+  STL_CLICK_FUNC      = '@',  ///< Click region start.
+};
+/// C string containing all 'statusline' option flags
+#define STL_ALL ((char[]) { \
+    STL_FILEPATH, STL_FULLPATH, STL_FILENAME, STL_COLUMN, STL_VIRTCOL, \
+    STL_VIRTCOL_ALT, STL_LINE, STL_NUMLINES, STL_BUFNO, STL_KEYMAP, STL_OFFSET, \
+    STL_OFFSET_X, STL_BYTEVAL, STL_BYTEVAL_X, STL_ROFLAG, STL_ROFLAG_ALT, \
+    STL_HELPFLAG, STL_HELPFLAG_ALT, STL_FILETYPE, STL_FILETYPE_ALT, \
+    STL_PREVIEWFLAG, STL_PREVIEWFLAG_ALT, STL_MODIFIED, STL_MODIFIED_ALT, \
+    STL_QUICKFIX, STL_PERCENTAGE, STL_ALTPERCENT, STL_ARGLISTSTAT, STL_PAGENUM, \
+    STL_SHOWCMD, STL_FOLDCOL, STL_SIGNCOL, STL_VIM_EXPR, STL_SEPARATE, \
+    STL_TRUNCMARK, STL_USER_HL, STL_HIGHLIGHT, STL_TABPAGENR, STL_TABCLOSENR, \
+    STL_CLICK_FUNC, STL_TABPAGENR, STL_TABCLOSENR, STL_CLICK_FUNC, \
+    0, })
+
+// flags used for parsed 'wildmode'
+#define WIM_FULL        0x01
+#define WIM_LONGEST     0x02
+#define WIM_LIST        0x04
+#define WIM_BUFLASTUSED 0x08
+
+// arguments for can_bs()
+// each defined char should be unique over all values
+// except for BS_START, that intentionally also matches BS_NOSTOP
+// because BS_NOSTOP behaves exactly the same except it
+// does not stop at the start of the insert point
+#define BS_INDENT       'i'     // "Indent"
+#define BS_EOL          'l'     // "eoL"
+#define BS_START        's'     // "Start"
+#define BS_NOSTOP       'p'     // "nostoP
+
+// flags for the 'culopt' option
+#define CULOPT_LINE     0x01    // Highlight complete line
+#define CULOPT_SCRLINE  0x02    // Highlight screen line
+#define CULOPT_NBR      0x04    // Highlight Number column
+
+#define LISPWORD_VALUE \
+  "defun,define,defmacro,set!,lambda,if,case,let,flet,let*,letrec,do,do*,define-syntax,let-syntax,letrec-syntax,destructuring-bind,defpackage,defparameter,defstruct,deftype,defvar,do-all-symbols,do-external-symbols,do-symbols,dolist,dotimes,ecase,etypecase,eval-when,labels,macrolet,multiple-value-bind,multiple-value-call,multiple-value-prog1,multiple-value-setq,prog1,progv,typecase,unless,unwind-protect,when,with-input-from-string,with-open-file,with-open-stream,with-output-to-string,with-package-iterator,define-condition,handler-bind,handler-case,restart-bind,restart-case,with-simple-restart,store-value,use-value,muffle-warning,abort,continue,with-slots,with-slots*,with-accessors,with-accessors*,defclass,defmethod,print-unreadable-object"
+
+// The following are actual variables for the options
+
+EXTERN char *p_ambw;             ///< 'ambiwidth'
+EXTERN int p_acd;                ///< 'autochdir'
+EXTERN int p_ai;                 ///< 'autoindent'
+EXTERN int p_bin;                ///< 'binary'
+EXTERN int p_bomb;               ///< 'bomb'
+EXTERN int p_bl;                 ///< 'buflisted'
+EXTERN int p_cin;                ///< 'cindent'
+EXTERN OptInt p_channel;         ///< 'channel'
+EXTERN char *p_cink;             ///< 'cinkeys'
+EXTERN char *p_cinsd;            ///< 'cinscopedecls'
+EXTERN char *p_cinw;             ///< 'cinwords'
+EXTERN char *p_cfu;              ///< 'completefunc'
+EXTERN char *p_ofu;              ///< 'omnifunc'
+EXTERN char *p_tsrfu;            ///< 'thesaurusfunc'
+EXTERN int p_ci;                 ///< 'copyindent'
+EXTERN int p_ar;                 ///< 'autoread'
+EXTERN int p_aw;                 ///< 'autowrite'
+EXTERN int p_awa;                ///< 'autowriteall'
+EXTERN char *p_bs;               ///< 'backspace'
+EXTERN char *p_bg;               ///< 'background'
+EXTERN int p_bk;                 ///< 'backup'
+EXTERN char *p_bkc;              ///< 'backupcopy'
+EXTERN unsigned bkc_flags;       ///< flags from 'backupcopy'
+#define BKC_YES                0x001
+#define BKC_AUTO               0x002
+#define BKC_NO                 0x004
+#define BKC_BREAKSYMLINK       0x008
+#define BKC_BREAKHARDLINK      0x010
+EXTERN char *p_bdir;             ///< 'backupdir'
+EXTERN char *p_bex;              ///< 'backupext'
+EXTERN char *p_bo;               ///< 'belloff'
+EXTERN char breakat_flags[256];  ///< which characters are in 'breakat'
+EXTERN unsigned bo_flags;
+
+// values for the 'belloff' option
+#define BO_ALL    0x0001
+#define BO_BS     0x0002
+#define BO_CRSR   0x0004
+#define BO_COMPL  0x0008
+#define BO_COPY   0x0010
+#define BO_CTRLG  0x0020
+#define BO_ERROR  0x0040
+#define BO_ESC    0x0080
+#define BO_EX     0x0100
+#define BO_HANGUL 0x0200
+#define BO_IM     0x0400
+#define BO_LANG   0x0800
+#define BO_MESS   0x1000
+#define BO_MATCH  0x2000
+#define BO_OPER   0x4000
+#define BO_REG    0x8000
+#define BO_SH     0x10000
+#define BO_SPELL  0x20000
+#define BO_WILD   0x40000
+
+EXTERN char *p_bsk;             ///< 'backupskip'
+EXTERN char *p_breakat;         ///< 'breakat'
+EXTERN char *p_bh;              ///< 'bufhidden'
+EXTERN char *p_bt;              ///< 'buftype'
+EXTERN char *p_cmp;             ///< 'casemap'
+EXTERN unsigned cmp_flags;
+#define CMP_INTERNAL            0x001
+#define CMP_KEEPASCII           0x002
+EXTERN char *p_enc;             ///< 'encoding'
+EXTERN int p_deco;              ///< 'delcombine'
+EXTERN char *p_ccv;             ///< 'charconvert'
+EXTERN char *p_cino;            ///< 'cinoptions'
+EXTERN char *p_cedit;           ///< 'cedit'
+EXTERN char *p_cb;              ///< 'clipboard'
+EXTERN unsigned cb_flags;
+#define CB_UNNAMED              0x001
+#define CB_UNNAMEDPLUS          0x002
+#define CB_UNNAMEDMASK          (CB_UNNAMED | CB_UNNAMEDPLUS)
+EXTERN OptInt p_cwh;            ///< 'cmdwinheight'
+EXTERN OptInt p_ch;             ///< 'cmdheight'
+EXTERN char *p_cms;             ///< 'commentstring'
+EXTERN char *p_cpt;             ///< 'complete'
+EXTERN OptInt p_columns;        ///< 'columns'
+EXTERN int p_confirm;           ///< 'confirm'
+EXTERN char *p_cot;             ///< 'completeopt'
+#ifdef BACKSLASH_IN_FILENAME
+EXTERN char *p_csl;             ///< 'completeslash'
+#endif
+EXTERN OptInt p_pb;             ///< 'pumblend'
+EXTERN OptInt p_ph;             ///< 'pumheight'
+EXTERN OptInt p_pw;             ///< 'pumwidth'
+EXTERN char *p_com;             ///< 'comments'
+EXTERN char *p_cpo;             ///< 'cpoptions'
+EXTERN char *p_debug;           ///< 'debug'
+EXTERN char *p_def;             ///< 'define'
+EXTERN char *p_inc;
+EXTERN char *p_dip;             ///< 'diffopt'
+EXTERN char *p_dex;             ///< 'diffexpr'
+EXTERN char *p_dict;            ///< 'dictionary'
+EXTERN int p_dg;                ///< 'digraph'
+EXTERN char *p_dir;             ///< 'directory'
+EXTERN char *p_dy;              ///< 'display'
+EXTERN unsigned dy_flags;
+#define DY_LASTLINE             0x001
+#define DY_TRUNCATE             0x002
+#define DY_UHEX                 0x004
+// legacy flag, not used
+#define DY_MSGSEP               0x008
+EXTERN int p_ed;                ///< 'edcompatible'
+EXTERN char *p_ead;             ///< 'eadirection'
+EXTERN int p_emoji;             ///< 'emoji'
+EXTERN int p_ea;                ///< 'equalalways'
+EXTERN char *p_ep;              ///< 'equalprg'
+EXTERN int p_eb;                ///< 'errorbells'
+EXTERN char *p_ef;              ///< 'errorfile'
+EXTERN char *p_efm;             ///< 'errorformat'
+EXTERN char *p_gefm;            ///< 'grepformat'
+EXTERN char *p_gp;              ///< 'grepprg'
+EXTERN int p_eof;               ///< 'endoffile'
+EXTERN int p_eol;               ///< 'endofline'
+EXTERN char *p_ei;              ///< 'eventignore'
+EXTERN int p_et;                ///< 'expandtab'
+EXTERN int p_exrc;              ///< 'exrc'
+EXTERN char *p_fenc;            ///< 'fileencoding'
+EXTERN char *p_fencs;           ///< 'fileencodings'
+EXTERN char *p_ff;              ///< 'fileformat'
+EXTERN char *p_ffs;             ///< 'fileformats'
+EXTERN int p_fic;               ///< 'fileignorecase'
+EXTERN char *p_ft;              ///< 'filetype'
+EXTERN char *p_fcs;             ///< 'fillchar'
+EXTERN int p_fixeol;            ///< 'fixendofline'
+EXTERN char *p_fcl;             ///< 'foldclose'
+EXTERN OptInt p_fdls;           ///< 'foldlevelstart'
+EXTERN char *p_fdo;             ///< 'foldopen'
+EXTERN unsigned fdo_flags;
+#define FDO_ALL                0x001
+#define FDO_BLOCK              0x002
+#define FDO_HOR                0x004
+#define FDO_MARK               0x008
+#define FDO_PERCENT            0x010
+#define FDO_QUICKFIX           0x020
+#define FDO_SEARCH             0x040
+#define FDO_TAG                0x080
+#define FDO_INSERT             0x100
+#define FDO_UNDO               0x200
+#define FDO_JUMP               0x400
+EXTERN char *p_fex;             ///< 'formatexpr'
+EXTERN char *p_flp;             ///< 'formatlistpat'
+EXTERN char *p_fo;              ///< 'formatoptions'
+EXTERN char *p_fp;              ///< 'formatprg'
+EXTERN int p_fs;                ///< 'fsync'
+EXTERN int p_gd;                ///< 'gdefault'
+EXTERN char *p_guicursor;       ///< 'guicursor'
+EXTERN char *p_guifont;         ///< 'guifont'
+EXTERN char *p_guifontwide;     ///< 'guifontwide'
+EXTERN char *p_hf;              ///< 'helpfile'
+EXTERN OptInt p_hh;             ///< 'helpheight'
+EXTERN char *p_hlg;             ///< 'helplang'
+EXTERN int p_hid;               ///< 'hidden'
+EXTERN char *p_hl;              ///< 'highlight'
+EXTERN int p_hls;               ///< 'hlsearch'
+EXTERN OptInt p_hi;             ///< 'history'
+EXTERN int p_arshape;           ///< 'arabicshape'
+EXTERN int p_icon;              ///< 'icon'
+EXTERN char *p_iconstring;      ///< 'iconstring'
+EXTERN int p_ic;                ///< 'ignorecase'
+EXTERN OptInt p_iminsert;       ///< 'iminsert'
+EXTERN OptInt p_imsearch;       ///< 'imsearch'
+EXTERN int p_inf;               ///< 'infercase'
+EXTERN char *p_inex;            ///< 'includeexpr'
+EXTERN int p_is;                ///< 'incsearch'
+EXTERN char *p_inde;            ///< 'indentexpr'
+EXTERN char *p_indk;            ///< 'indentkeys'
+EXTERN char *p_icm;             ///< 'inccommand'
+EXTERN char *p_isf;             ///< 'isfname'
+EXTERN char *p_isi;             ///< 'isident'
+EXTERN char *p_isk;             ///< 'iskeyword'
+EXTERN char *p_isp;             ///< 'isprint'
+EXTERN int p_js;                ///< 'joinspaces'
+EXTERN char *p_jop;             ///< 'jumpooptions'
+EXTERN unsigned jop_flags;
+#define JOP_STACK               0x01
+#define JOP_VIEW                0x02
+EXTERN char *p_keymap;          ///< 'keymap'
+EXTERN char *p_kp;              ///< 'keywordprg'
+EXTERN char *p_km;              ///< 'keymodel'
+EXTERN char *p_langmap;         ///< 'langmap'
+EXTERN int p_lnr;               ///< 'langnoremap'
+EXTERN int p_lrm;               ///< 'langremap'
+EXTERN char *p_lm;              ///< 'langmenu'
+EXTERN OptInt p_lines;          ///< 'lines'
+EXTERN OptInt p_linespace;      ///< 'linespace'
+EXTERN int p_lisp;              ///< 'lisp'
+EXTERN char *p_lop;             ///< 'lispoptions'
+EXTERN char *p_lispwords;       ///< 'lispwords'
+EXTERN OptInt p_ls;             ///< 'laststatus'
+EXTERN OptInt p_stal;           ///< 'showtabline'
+EXTERN char *p_lcs;             ///< 'listchars'
+
+EXTERN int p_lz;                ///< 'lazyredraw'
+EXTERN int p_lpl;               ///< 'loadplugins'
+EXTERN int p_magic;             ///< 'magic'
+EXTERN char *p_menc;            ///< 'makeencoding'
+EXTERN char *p_mef;             ///< 'makeef'
+EXTERN char *p_mp;              ///< 'makeprg'
+EXTERN char *p_mps;             ///< 'matchpairs'
+EXTERN OptInt p_mat;            ///< 'matchtime'
+EXTERN OptInt p_mco;            ///< 'maxcombine'
+EXTERN OptInt p_mfd;            ///< 'maxfuncdepth'
+EXTERN OptInt p_mmd;            ///< 'maxmapdepth'
+EXTERN OptInt p_mmp;            ///< 'maxmempattern'
+EXTERN OptInt p_mis;            ///< 'menuitems'
+EXTERN char *p_msm;             ///< 'mkspellmem'
+EXTERN int p_ml;                ///< 'modeline'
+EXTERN int p_mle;               ///< 'modelineexpr'
+EXTERN OptInt p_mls;            ///< 'modelines'
+EXTERN int p_ma;                ///< 'modifiable'
+EXTERN int p_mod;               ///< 'modified'
+EXTERN char *p_mouse;           ///< 'mouse'
+EXTERN char *p_mousem;          ///< 'mousemodel'
+EXTERN int p_mousemev;          ///< 'mousemoveevent'
+EXTERN int p_mousef;            ///< 'mousefocus'
+EXTERN char *p_mousescroll;     ///< 'mousescroll'
+EXTERN OptInt p_mousescroll_vert INIT(= MOUSESCROLL_VERT_DFLT);
+EXTERN OptInt p_mousescroll_hor INIT(= MOUSESCROLL_HOR_DFLT);
+EXTERN OptInt p_mouset;         ///< 'mousetime'
+EXTERN int p_more;              ///< 'more'
+EXTERN char *p_nf;              ///< 'nrformats'
+EXTERN char *p_opfunc;          ///< 'operatorfunc'
+EXTERN char *p_para;            ///< 'paragraphs'
+EXTERN int p_paste;             ///< 'paste'
+EXTERN char *p_pex;             ///< 'patchexpr'
+EXTERN char *p_pm;              ///< 'patchmode'
+EXTERN char *p_path;            ///< 'path'
+EXTERN char *p_cdpath;          ///< 'cdpath'
+EXTERN int p_pi;                ///< 'preserveindent'
+EXTERN OptInt p_pyx;            ///< 'pyxversion'
+EXTERN char *p_qe;              ///< 'quoteescape'
+EXTERN int p_ro;                ///< 'readonly'
+EXTERN char *p_rdb;             ///< 'redrawdebug'
+EXTERN unsigned rdb_flags;
+#define RDB_COMPOSITOR          0x001
+#define RDB_NOTHROTTLE          0x002
+#define RDB_INVALID             0x004
+#define RDB_NODELTA             0x008
+#define RDB_LINE                0x010
+#define RDB_FLUSH               0x020
+#define RDB_INTERSECT           0x040
+
+EXTERN OptInt p_rdt;            ///< 'redrawtime'
+EXTERN OptInt p_re;             ///< 'regexpengine'
+EXTERN OptInt p_report;         ///< 'report'
+EXTERN OptInt p_pvh;            ///< 'previewheight'
+EXTERN int p_ari;               ///< 'allowrevins'
+EXTERN int p_ri;                ///< 'revins'
+EXTERN int p_ru;                ///< 'ruler'
+EXTERN char *p_ruf;             ///< 'rulerformat'
+EXTERN char *p_pp;              ///< 'packpath'
+EXTERN char *p_qftf;            ///< 'quickfixtextfunc'
+EXTERN char *p_rtp;             ///< 'runtimepath'
+EXTERN OptInt p_scbk;           ///< 'scrollback'
+EXTERN OptInt p_sj;             ///< 'scrolljump'
+EXTERN OptInt p_so;             ///< 'scrolloff'
+EXTERN char *p_sbo;             ///< 'scrollopt'
+EXTERN char *p_sections;        ///< 'sections'
+EXTERN int p_secure;            ///< 'secure'
+EXTERN char *p_sel;             ///< 'selection'
+EXTERN char *p_slm;             ///< 'selectmode'
+EXTERN char *p_ssop;            ///< 'sessionoptions'
+EXTERN unsigned ssop_flags;
+
+#define SSOP_BUFFERS            0x001
+#define SSOP_WINPOS             0x002
+#define SSOP_RESIZE             0x004
+#define SSOP_WINSIZE            0x008
+#define SSOP_LOCALOPTIONS       0x010
+#define SSOP_OPTIONS            0x020
+#define SSOP_HELP               0x040
+#define SSOP_BLANK              0x080
+#define SSOP_GLOBALS            0x100
+#define SSOP_SLASH              0x200  // Deprecated, always set.
+#define SSOP_UNIX               0x400  // Deprecated, always set.
+#define SSOP_SESDIR             0x800
+#define SSOP_CURDIR             0x1000
+#define SSOP_FOLDS              0x2000
+#define SSOP_CURSOR             0x4000
+#define SSOP_TABPAGES           0x8000
+#define SSOP_TERMINAL           0x10000
+#define SSOP_SKIP_RTP           0x20000
+
+EXTERN char *p_sh;              ///< 'shell'
+EXTERN char *p_shcf;            ///< 'shellcmdflag'
+EXTERN char *p_sp;              ///< 'shellpipe'
+EXTERN char *p_shq;             ///< 'shellquote'
+EXTERN char *p_sxq;             ///< 'shellxquote'
+EXTERN char *p_sxe;             ///< 'shellxescape'
+EXTERN char *p_srr;             ///< 'shellredir'
+EXTERN int p_stmp;              ///< 'shelltemp'
+#ifdef BACKSLASH_IN_FILENAME
+EXTERN int p_ssl;               ///< 'shellslash'
+#endif
+EXTERN char *p_stl;             ///< 'statusline'
+EXTERN char *p_wbr;             ///< 'winbar'
+EXTERN int p_sr;                ///< 'shiftround'
+EXTERN OptInt p_sw;             ///< 'shiftwidth'
+EXTERN char *p_shm;             ///< 'shortmess'
+EXTERN char *p_sbr;             ///< 'showbreak'
+EXTERN int p_sc;                ///< 'showcmd'
+EXTERN char *p_sloc;            ///< 'showcmdloc'
+EXTERN int p_sft;               ///< 'showfulltag'
+EXTERN int p_sm;                ///< 'showmatch'
+EXTERN int p_smd;               ///< 'showmode'
+EXTERN OptInt p_ss;             ///< 'sidescroll'
+EXTERN OptInt p_siso;           ///< 'sidescrolloff'
+EXTERN int p_scs;               ///< 'smartcase'
+EXTERN int p_si;                ///< 'smartindent'
+EXTERN int p_sta;               ///< 'smarttab'
+EXTERN OptInt p_sts;            ///< 'softtabstop'
+EXTERN int p_sb;                ///< 'splitbelow'
+EXTERN char *p_sua;             ///< 'suffixesadd'
+EXTERN int p_swf;               ///< 'swapfile'
+EXTERN OptInt p_smc;            ///< 'synmaxcol'
+EXTERN OptInt p_tpm;            ///< 'tabpagemax'
+EXTERN char *p_tal;             ///< 'tabline'
+EXTERN char *p_tpf;             ///< 'termpastefilter'
+EXTERN unsigned tpf_flags;      ///< flags from 'termpastefilter'
+#define TPF_BS                  0x001
+#define TPF_HT                  0x002
+#define TPF_FF                  0x004
+#define TPF_ESC                 0x008
+#define TPF_DEL                 0x010
+#define TPF_C0                  0x020
+#define TPF_C1                  0x040
+EXTERN char *p_tfu;             ///< 'tagfunc'
+EXTERN char *p_spc;             ///< 'spellcapcheck'
+EXTERN char *p_spf;             ///< 'spellfile'
+EXTERN char *p_spk;             ///< 'splitkeep'
+EXTERN char *p_spl;             ///< 'spelllang'
+EXTERN char *p_spo;             ///< 'spelloptions'
+EXTERN unsigned spo_flags;
+EXTERN char *p_sps;             ///< 'spellsuggest'
+EXTERN int p_spr;               ///< 'splitright'
+EXTERN int p_sol;               ///< 'startofline'
+EXTERN char *p_su;              ///< 'suffixes'
+EXTERN char *p_swb;             ///< 'switchbuf'
+EXTERN unsigned swb_flags;
+// Keep in sync with p_swb_values in optionstr.c
+#define SWB_USEOPEN             0x001
+#define SWB_USETAB              0x002
+#define SWB_SPLIT               0x004
+#define SWB_NEWTAB              0x008
+#define SWB_VSPLIT              0x010
+#define SWB_USELAST             0x020
+EXTERN char *p_syn;             ///< 'syntax'
+EXTERN OptInt p_ts;             ///< 'tabstop'
+EXTERN int p_tbs;               ///< 'tagbsearch'
+EXTERN char *p_tc;              ///< 'tagcase'
+EXTERN unsigned tc_flags;       ///< flags from 'tagcase'
+#define TC_FOLLOWIC             0x01
+#define TC_IGNORE               0x02
+#define TC_MATCH                0x04
+#define TC_FOLLOWSCS            0x08
+#define TC_SMART                0x10
+EXTERN OptInt p_tl;             ///< 'taglength'
+EXTERN int p_tr;                ///< 'tagrelative'
+EXTERN char *p_tags;            ///< 'tags'
+EXTERN int p_tgst;              ///< 'tagstack'
+EXTERN int p_tbidi;             ///< 'termbidi'
+EXTERN OptInt p_tw;             ///< 'textwidth'
+EXTERN int p_to;                ///< 'tildeop'
+EXTERN int p_timeout;           ///< 'timeout'
+EXTERN OptInt p_tm;             ///< 'timeoutlen'
+EXTERN int p_title;             ///< 'title'
+EXTERN OptInt p_titlelen;       ///< 'titlelen'
+EXTERN char *p_titleold;        ///< 'titleold'
+EXTERN char *p_titlestring;     ///< 'titlestring'
+EXTERN char *p_tsr;             ///< 'thesaurus'
+EXTERN int p_tgc;               ///< 'termguicolors'
+EXTERN int p_ttimeout;          ///< 'ttimeout'
+EXTERN OptInt p_ttm;            ///< 'ttimeoutlen'
+EXTERN char *p_udir;            ///< 'undodir'
+EXTERN int p_udf;               ///< 'undofile'
+EXTERN OptInt p_ul;             ///< 'undolevels'
+EXTERN OptInt p_ur;             ///< 'undoreload'
+EXTERN OptInt p_uc;             ///< 'updatecount'
+EXTERN OptInt p_ut;             ///< 'updatetime'
+EXTERN char *p_shada;           ///< 'shada'
+EXTERN char *p_shadafile;       ///< 'shadafile'
+EXTERN char *p_vsts;            ///< 'varsofttabstop'
+EXTERN char *p_vts;             ///< 'vartabstop'
+EXTERN char *p_vdir;            ///< 'viewdir'
+EXTERN char *p_vop;             ///< 'viewoptions'
+EXTERN unsigned vop_flags;      ///< uses SSOP_ flags
+EXTERN int p_vb;                ///< 'visualbell'
+EXTERN char *p_ve;              ///< 'virtualedit'
+EXTERN unsigned ve_flags;
+#define VE_BLOCK       5U       // includes "all"
+#define VE_INSERT      6U       // includes "all"
+#define VE_ALL         4U
+#define VE_ONEMORE     8U
+#define VE_NONE        16U      // "none"
+#define VE_NONEU       32U      // "NONE"
+EXTERN OptInt p_verbose;        ///< 'verbose'
+#ifdef IN_OPTION_C
+char *p_vfile = "";             ///< used before options are initialized
+#else
+extern char *p_vfile;           ///< 'verbosefile'
+#endif
+EXTERN int p_warn;              ///< 'warn'
+EXTERN char *p_wop;             ///< 'wildoptions'
+EXTERN unsigned wop_flags;
+#define WOP_TAGFILE             0x01
+#define WOP_PUM                 0x02
+#define WOP_FUZZY               0x04
+EXTERN OptInt p_window;         ///< 'window'
+EXTERN char *p_wak;             ///< 'winaltkeys'
+EXTERN char *p_wig;             ///< 'wildignore'
+EXTERN char *p_ww;              ///< 'whichwrap'
+EXTERN OptInt p_wc;             ///< 'wildchar'
+EXTERN OptInt p_wcm;            ///< 'wildcharm'
+EXTERN int p_wic;               ///< 'wildignorecase'
+EXTERN char *p_wim;             ///< 'wildmode'
+EXTERN int p_wmnu;              ///< 'wildmenu'
+EXTERN OptInt p_wh;             ///< 'winheight'
+EXTERN OptInt p_wmh;            ///< 'winminheight'
+EXTERN OptInt p_wmw;            ///< 'winminwidth'
+EXTERN OptInt p_wiw;            ///< 'winwidth'
+EXTERN OptInt p_wm;             ///< 'wrapmargin'
+EXTERN int p_ws;                ///< 'wrapscan'
+EXTERN int p_write;             ///< 'write'
+EXTERN int p_wa;                ///< 'writeany'
+EXTERN int p_wb;                ///< 'writebackup'
+EXTERN OptInt p_wd;             ///< 'writedelay'
+EXTERN int p_cdh;               ///< 'cdhome'
+
+EXTERN int p_force_on;          ///< options that cannot be turned off.
+EXTERN int p_force_off;         ///< options that cannot be turned on.
+
+/// "indir" values for buffer-local options.
+/// These need to be defined globally, so that the BV_COUNT can be used with
+/// b_p_script_stx[].
+enum {
+  BV_AI = 0,
+  BV_AR,
+  BV_BH,
+  BV_BKC,
+  BV_BT,
+  BV_EFM,
+  BV_GP,
+  BV_MP,
+  BV_BIN,
+  BV_BL,
+  BV_BOMB,
+  BV_CHANNEL,
+  BV_CI,
+  BV_CIN,
+  BV_CINK,
+  BV_CINO,
+  BV_CINW,
+  BV_CINSD,
+  BV_CM,
+  BV_CMS,
+  BV_COM,
+  BV_CPT,
+  BV_DICT,
+  BV_TSR,
+  BV_CSL,
+  BV_CFU,
+  BV_DEF,
+  BV_INC,
+  BV_EOF,
+  BV_EOL,
+  BV_FIXEOL,
+  BV_EP,
+  BV_ET,
+  BV_FENC,
+  BV_FP,
+  BV_BEXPR,
+  BV_FEX,
+  BV_FF,
+  BV_FLP,
+  BV_FO,
+  BV_FT,
+  BV_IMI,
+  BV_IMS,
+  BV_INDE,
+  BV_INDK,
+  BV_INEX,
+  BV_INF,
+  BV_ISK,
+  BV_KMAP,
+  BV_KP,
+  BV_LISP,
+  BV_LOP,
+  BV_LW,
+  BV_MENC,
+  BV_MA,
+  BV_ML,
+  BV_MOD,
+  BV_MPS,
+  BV_NF,
+  BV_OFU,
+  BV_PATH,
+  BV_PI,
+  BV_QE,
+  BV_RO,
+  BV_SCBK,
+  BV_SI,
+  BV_SMC,
+  BV_SYN,
+  BV_SPC,
+  BV_SPF,
+  BV_SPL,
+  BV_SPO,
+  BV_STS,
+  BV_SUA,
+  BV_SW,
+  BV_SWF,
+  BV_TFU,
+  BV_TSRFU,
+  BV_TAGS,
+  BV_TC,
+  BV_TS,
+  BV_TW,
+  BV_TX,
+  BV_UDF,
+  BV_UL,
+  BV_WM,
+  BV_VSTS,
+  BV_VTS,
+  BV_COUNT,  // must be the last one
+};
+
+/// "indir" values for window-local options.
+/// These need to be defined globally, so that the WV_COUNT can be used in the
+/// window structure.
+enum {
+  WV_LIST = 0,
+  WV_ARAB,
+  WV_COCU,
+  WV_COLE,
+  WV_CRBIND,
+  WV_BRI,
+  WV_BRIOPT,
+  WV_DIFF,
+  WV_FDC,
+  WV_FEN,
+  WV_FDI,
+  WV_FDL,
+  WV_FDM,
+  WV_FML,
+  WV_FDN,
+  WV_FDE,
+  WV_FDT,
+  WV_FMR,
+  WV_LBR,
+  WV_NU,
+  WV_RNU,
+  WV_VE,
+  WV_NUW,
+  WV_PVW,
+  WV_RL,
+  WV_RLC,
+  WV_SCBIND,
+  WV_SCROLL,
+  WV_SMS,
+  WV_SISO,
+  WV_SO,
+  WV_SPELL,
+  WV_CUC,
+  WV_CUL,
+  WV_CULOPT,
+  WV_CC,
+  WV_SBR,
+  WV_STC,
+  WV_STL,
+  WV_WFH,
+  WV_WFW,
+  WV_WRAP,
+  WV_SCL,
+  WV_WINHL,
+  WV_LCS,
+  WV_FCS,
+  WV_WINBL,
+  WV_WBR,
+  WV_COUNT,  // must be the last one
+};
+
+// Value for b_p_ul indicating the global value must be used.
+#define NO_LOCAL_UNDOLEVEL (-123456)
+
+#define SB_MAX 100000  // Maximum 'scrollback' value.
+
+#define MAX_NUMBERWIDTH 20      // used for 'numberwidth' and 'statuscolumn'
+
+#define TABSTOP_MAX 9999
+
+#endif  // NVIM_OPTION_VARS_H

src/nvim/optionstr.c

@@ -37,6 +37,7 @@
 #include "nvim/move.h"
 #include "nvim/option.h"
 #include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/os.h"
 #include "nvim/pos.h"

src/nvim/os/env.c

@@ -25,7 +25,7 @@
 #include "nvim/map.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"
 #include "nvim/strings.h"

src/nvim/os/fs.c

@@ -35,7 +35,7 @@
 #include "nvim/macros.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"

src/nvim/os/input.c

@@ -23,7 +23,7 @@
 #include "nvim/macros.h"
 #include "nvim/main.h"
 #include "nvim/msgpack_rpc/channel.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os_defs.h"
 #include "nvim/os/time.h"

src/nvim/os/shell.c

@@ -31,7 +31,7 @@
 #include "nvim/memline.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs.h"
 #include "nvim/os/os_defs.h"
 #include "nvim/os/shell.h"

src/nvim/path.c

@@ -26,6 +26,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/plines.c

@@ -21,6 +21,7 @@
 #include "nvim/memline.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/plines.h"
 #include "nvim/pos.h"
 #include "nvim/state.h"

src/nvim/popupmenu.c

@@ -31,6 +31,7 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/popupmenu.h"
 #include "nvim/pos.h"
 #include "nvim/strings.h"

src/nvim/profile.c

@@ -24,7 +24,6 @@
 #include "nvim/keycodes.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
 #include "nvim/os/os.h"
 #include "nvim/os/time.h"
 #include "nvim/pos.h"

src/nvim/quickfix.c

@@ -47,6 +47,8 @@
 #include "nvim/move.h"
 #include "nvim/normal.h"
 #include "nvim/option.h"
+#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"

src/nvim/quickfix.h

@@ -2,6 +2,7 @@
 #define NVIM_QUICKFIX_H
 
 #include "nvim/ex_cmds_defs.h"
+#include "nvim/option_defs.h"
 #include "nvim/types.h"
 
 // flags for skip_vimgrep_pat()

src/nvim/regexp.c

@@ -31,7 +31,7 @@
 #include "nvim/memline.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/plines.h"
 #include "nvim/pos.h"

src/nvim/runtime.c

@@ -40,6 +40,8 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/os/stdpaths_defs.h"

src/nvim/runtime.h

@@ -9,6 +9,7 @@
 #include "nvim/ex_cmds_defs.h"
 #include "nvim/ex_eval_defs.h"
 #include "nvim/garray.h"
+#include "nvim/option_defs.h"
 #include "nvim/pos.h"
 #include "nvim/types.h"
 

src/nvim/search.c

@@ -43,6 +43,7 @@
 #include "nvim/move.h"
 #include "nvim/normal.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/time.h"

src/nvim/shada.c

@@ -42,6 +42,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fileio.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/os.h"

src/nvim/spell.c

@@ -90,6 +90,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os_defs.h"

src/nvim/spellfile.c

@@ -254,6 +254,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/os/time.h"

src/nvim/spellsuggest.c

@@ -34,6 +34,7 @@
 #include "nvim/message.h"
 #include "nvim/normal.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os_defs.h"

src/nvim/state.c

@@ -20,6 +20,7 @@
 #include "nvim/macros.h"
 #include "nvim/main.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/state.h"
 #include "nvim/strings.h"

src/nvim/statusline.c

@@ -33,6 +33,7 @@
 #include "nvim/message.h"
 #include "nvim/normal.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/os.h"
 #include "nvim/path.h"

src/nvim/syntax.c

@@ -34,7 +34,7 @@
 #include "nvim/memline.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/path.h"

src/nvim/tag.c

@@ -41,6 +41,8 @@
 #include "nvim/message.h"
 #include "nvim/move.h"
 #include "nvim/option.h"
+#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/tag.h

@@ -2,6 +2,7 @@
 #define NVIM_TAG_H
 
 #include "nvim/ex_cmds_defs.h"
+#include "nvim/option_defs.h"
 #include "nvim/types.h"
 
 // Values for do_tag().

src/nvim/terminal.c

@@ -79,6 +79,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/optionstr.h"
 #include "nvim/pos.h"
 #include "nvim/state.h"

src/nvim/textformat.c

@@ -31,6 +31,7 @@
 #include "nvim/normal.h"
 #include "nvim/ops.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/pos.h"
 #include "nvim/search.h"

src/nvim/textobject.c

@@ -23,7 +23,7 @@
 #include "nvim/memory.h"
 #include "nvim/move.h"
 #include "nvim/normal.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/pos.h"
 #include "nvim/search.h"
 #include "nvim/strings.h"

src/nvim/tui/input.c

@@ -17,7 +17,7 @@
 #include "nvim/main.h"
 #include "nvim/map.h"
 #include "nvim/memory.h"
-#include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/os.h"
 #include "nvim/tui/input.h"
 #include "nvim/tui/input_defs.h"

src/nvim/ui.c

@@ -30,6 +30,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/time.h"
 #include "nvim/strings.h"
 #include "nvim/ui.h"

src/nvim/ui_compositor.c

@@ -25,7 +25,7 @@
 #include "nvim/macros.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/time.h"
 #include "nvim/types.h"
 #include "nvim/ui.h"

src/nvim/undo.c

@@ -112,6 +112,7 @@
 #include "nvim/memory.h"
 #include "nvim/message.h"
 #include "nvim/option.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/fs_defs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"

src/nvim/usercmd.c

@@ -30,7 +30,7 @@
 #include "nvim/memory.h"
 #include "nvim/menu.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/os/input.h"
 #include "nvim/runtime.h"
 #include "nvim/strings.h"

src/nvim/version.c

@@ -31,7 +31,7 @@
 #include "nvim/mbyte.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"
-#include "nvim/option_defs.h"
+#include "nvim/option_vars.h"
 #include "nvim/strings.h"
 #include "nvim/version.h"
 #include "nvim/vim.h"