vis: refactor Lua integration

Lua support can now be disabled at compile time using:

 $ make CONFIG_LUA=0

This commit also adds an initial Lua API and provides a few
default hooks.

We now also require Lua >= 5.2 due to the uservalue constructs.
In principle the same functionality could be implemented using
function environments from Lua 5.1.

1 files changed, 1 insertions, 1 deletions

diff --git a/view.h b/view.h
index 25b186f..ea8bca6 100644
--- a/view.h
+++ b/view.h
@@ -3,7 +3,6 @@
 
 #include <stddef.h>
 #include <stdbool.h>
-#include <lua.h>
 #include "register.h"
 #include "text.h"
 #include "ui.h"
@@ -11,6 +10,7 @@
 typedef struct View View;
 typedef struct Cursor Cursor;
 typedef struct Selection Selection;
+typedef struct lua_State lua_State;
 
 typedef struct {
 	int width;          /* display width i.e. number of columns ocupied by this character */