merge upstream

LoWeR cAsE
Show red error if loading plugin fails

bot/utils.lua

@@ -430,12 +430,17 @@ function send_large_msg_callback(cb_extra, success, result)
 end
 
 -- Returns a table with matches or nil
-function match_pattern(pattern, text)
+function match_pattern(pattern, text, lower_case)
   if text then
-    local matches = { string.match(text, pattern) }
-    if next(matches) then
-      return matches
-    end
+    local matches = {}
+    if lower_case then
+      matches = { string.match(text:lower(), pattern) }
+    else
+      matches = { string.match(text, pattern) }
+     end
+      if next(matches) then
+        return matches
+      end
   end
   -- nil
 end