vis-lua: expose init event and use it to set default theme

The init event is emitted immediately after `visrc.lua` has been sourced, but
before any other events have occured, in particular the command line arguments
have not yet been processed.

Close #422

4 files changed, 15 insertions, 6 deletions

diff --git a/lua/vis-std.lua b/lua/vis-std.lua
index a46896a..831f64b 100644
--- a/lua/vis-std.lua
+++ b/lua/vis-std.lua
@@ -115,5 +115,3 @@ vis.events.subscribe(vis.events.WIN_STATUS, function(win)
 	local right = ' ' .. table.concat(right_parts, " « ") .. ' '
 	win:status(left, right);
 end)
-
-vis:command("set theme ".. (vis.ui.colors <= 16 and "default-16" or "default-256"))
diff --git a/lua/vis.lua b/lua/vis.lua
index c5ab47e..be46b79 100644
--- a/lua/vis.lua
+++ b/lua/vis.lua
@@ -88,6 +88,7 @@ local events = {
 	FILE_OPEN = "Event::FILE_OPEN", -- see @{file_open}
 	FILE_SAVE_POST = "Event::FILE_SAVE_POST", -- see @{file_save_post}
 	FILE_SAVE_PRE = "Event::FILE_SAVE_PRE", -- see @{file_save_pre}
+	INIT = "Event::INIT", -- see @{init}
 	QUIT = "Event::QUIT", -- see @{quit}
 	START = "Event::START", -- see @{start}
 	THEME_CHANGE = "Event::THEME_CHANGE", -- see @{theme_change}
@@ -102,6 +103,7 @@ events.file_close = function(...) events.emit(events.FILE_CLOSE, ...) end
 events.file_open = function(...) events.emit(events.FILE_OPEN, ...) end
 events.file_save_post = function(...) events.emit(events.FILE_SAVE_POST, ...) end
 events.file_save_pre = function(...) return events.emit(events.FILE_SAVE_PRE, ...) end
+events.init = function(...) events.emit(events.INIT, ...) end
 events.quit = function(...) events.emit(events.QUIT, ...) end
 events.start = function(...) events.emit(events.START, ...) end
 events.theme_change = function(...) events.emit(events.THEME_CHANGE, ...) end
diff --git a/lua/visrc.lua b/lua/visrc.lua
index 1a304b4..13bd7f7 100644
--- a/lua/visrc.lua
+++ b/lua/visrc.lua
@@ -3,9 +3,9 @@ require('vis')
 require('plugins/filetype')
 require('plugins/textobject-lexer')
 
-vis.events.subscribe(vis.events.START, function()
-	-- Your global configuration options e.g.
-	-- vis:command('map! normal j gj')
+vis.events.subscribe(vis.events.INIT, function()
+	-- Your global configuration options
+	vis:command("set theme ".. (vis.ui.colors <= 16 and "default-16" or "default-256"))
 end)
 
 vis.events.subscribe(vis.events.WIN_OPEN, function(win)
diff --git a/vis-lua.c b/vis-lua.c
index 29f3103..e37c1c0 100644
--- a/vis-lua.c
+++ b/vis-lua.c
@@ -1846,6 +1846,15 @@ static bool package_exist(Vis *vis, lua_State *L, const char *name) {
 	return ret;
 }
 
+/***
+ * Editor initialization completed.
+ * This event is emitted immediately after `visrc.lua` has been sourced, but
+ * before any other events have occured, in particular the command line arguments
+ * have not yet been processed.
+ *
+ * Can be used to set *global* configuration options.
+ * @function init
+ */
 void vis_lua_init(Vis *vis) {
 	lua_State *L = luaL_newstate();
 	if (!L)
@@ -1979,6 +1988,7 @@ void vis_lua_init(Vis *vis) {
 		lua_getglobal(L, "require");
 		lua_pushstring(L, "visrc");
 		pcall(vis, L, 1, 0);
+		vis_lua_event_call(vis, "init");
 	}
 }
 
@@ -1987,7 +1997,6 @@ void vis_lua_init(Vis *vis) {
  * This event is emitted immediately before the main loop starts.
  * At this point all files are loaded and corresponding windows are created.
  * We are about to process interactive keyboard input.
- * Can be used to set *global* configuration options.
  * @function start
  */
 void vis_lua_start(Vis *vis) {