ensure tld target is given

README.md

@@ -10,3 +10,4 @@ Consider logging
 Change `bot.say` to `bot.msg`  
 Add CTCP responses  
 More complex versioning  
+Better readme  

modules/sed.py

@@ -67,8 +67,8 @@ def findandreplace(bot, trigger):
 	if trigger.is_privmsg:
 		return
 
-	rule = re.compile(r"(?:(\S+)[:,]\s+)?s\/((?:\\\/|[^/])+)\/((?:\\\/|[^/])*)"\
+	rule = re.compile(r"(\S+)?(?:[:,]\s|^)s\/((?:\\\/|[^/])+)\/((?:\\\/|[^/])*"\
-		+ r"(?:\/(\S+))?")
+		 + r")(?:\/(\S+))?")
 	group = rule.search(trigger.group(0))
 	if not group:
 		return

modules/tld.py

@@ -14,6 +14,8 @@ URI = 'https://en.wikipedia.org/wiki/List_of_Internet_top-level_domains'
 def gettld(bot, trigger):
 	"""Show information about the given Top Level Domain."""
 	word = trigger.group(2).strip()
+	if not word:
+		return bot.reply("What TLD?")
 	if " " in word:
 		return bot.reply("One TLD at a time.")
 	if not word.startswith("."):