Fixed indentation of lines that end with partial long strings with op…

…ening brackets (#324).

spec/lua.lua

@@ -80,6 +80,7 @@ return {
     end
     str = (str
       :gsub('%[=*%[.-%]=*%]','') -- remove long strings
+      :gsub('%[=*%[.*','') -- remove partial long strings
       :gsub('%-%-.*','') -- strip comments after strings are processed
       :gsub("%b()","()") -- remove all function calls
     )