don't call lexers.load multiple times

1 files changed, 5 insertions, 4 deletions

diff --git a/init.lua b/init.lua
index c7170dd..1c8cda7 100644
--- a/init.lua
+++ b/init.lua
@@ -115,9 +115,8 @@ local function match_at(str, pattern, pos)
 	if t then return t[1] - 1, t[#t] - 1 end
 end
 
-local function escaping_context(win, range, data)
-	if not win.syntax then return {} end
-	local rules = vis.lexers.load(win.syntax)._RULES
+local function escaping_context(lexer, range, data)
+	local rules = lexer._RULES
 	local p
 	for _, name in ipairs({vis.lexers.COMMENT, vis.lexers.STRING}) do
 		if rules[name] then
@@ -144,11 +143,13 @@ local function escaping_context(win, range, data)
 end
 
 local function get_range(key, win, pos, file_data, count)
+	if not win.syntax then return end
 	local d = get_pair(key, win)
 	if not d then return end
+	local lexer = vis.lexers.load(win.syntax)
 	repeat
 		local sel_range = selection_range(win, pos)
-		local c = escaping_context(win, sel_range, file_data)
+		local c = escaping_context(lexer, sel_range, file_data)
 		local range = c.range or {1, #file_data}
 		local correction = range[1] - 1
 		pos = pos - correction