Lua lexer handles escape string in regex incorrectly

[VADemon]

Lua

Code sample:

if
	url = url:gsub("^['\"]", ""):gsub("['\"]$", "")
end

All lines following the reg expression are considered to be part of a string (e.g. the "end" statement). This regex probably triggers a bug in string_escape

Looks like Github's highlighter doesn't have this problem ;)

Screenshots

Additional context
As seen on Gitlab (if I'm not mistaken it uses rouge): code link