Prevent complete multi-replacement in chatalias. Doesn't prevent 1 -> 2 and 23 -> 5 to make for 13 -> 5, but does prevent a -> 20 and 2 -> 3. Tested.

chatalias.py

@@ -86,6 +86,7 @@ def on_alias_command(sender, cmd, label, args):
             return True
         return subcommands[args[0].lower()](sender, args[1:])
     except:
+        print(trace())
         return subcommands["help"](sender, "1")
 
 
@@ -179,8 +180,9 @@ def add(sender, args):
         msg(sender, "&cCould not create alias: Max_limit reached!")
         return True
     args = [args[0]] + [" ".join(args[1:])]
-    data[str(uid(sender))][str(args[0])] = args[1]
+    if not add_alias_data(uid(sender), str(args[0]), args[1]):
-    save_data(uid(sender))
+        msg(sender, colorify("&c") + "Could not add an alias for this sequence because a priorly added alias contains it")
+        return True
     msg(sender, colorify("&7Alias: ") + args[0] + colorify("&7 -> " + args[1] + colorify("&7 was succesfully created!")), usecolor=sender.hasPermission("essentials.chat.color"))
     return True
 
@@ -203,14 +205,29 @@ def radd(sender, args):
         return True
     if len(args) == 3:
         args += ["true"]
-    data[str(uid(target))][str(args[1])] = str(args[2])
+    if not add_alias_data(uid(target), str(args[1]), str(args[2])):
-    save_data(uid(target))
+        message = colorify("&c") + "Could not add an alias for this sequence because a priorly added alias contains it"
+        msg(sender, message)
+        if args[3].lower() == "false":
+            msg(target, message)
+        return True
     msg(sender, colorify("&7Alias: ") + args[1] + colorify("&7 -> " + args[2] + colorify("&7 was succesfully created!")), usecolor=target.hasPermission("essentials.chat.color"))
     if args[3].lower() == "false":
         msg(target, colorify("&7Alias: ") + args[1] + colorify("&7 -> " + args[2] + colorify("&7 was succesfully created!")), usecolor=target.hasPermission("essentials.chat.color"))
     return True
 
 
+def add_alias_data(puuid, aliased, new_alias):
+    prior = data[puuid]
+    if aliased not in prior:
+        for alias in prior.values():
+            if aliased in alias:
+                return False
+    prior[aliased] = new_alias
+    save_data(puuid)
+    return True
+
+
 def remove(sender, args):
     plugin_header(sender, "Alias")
     try:

main.py

@@ -43,7 +43,7 @@ shared["load_modules"] = [
     # Adds /calc, toggles automatic solving of Math expressions in chat
     "calc",
     # Adds aliasing of chat words
-    #"chatalias",
+    "chatalias",
     # Plugin to locate laggy chunks. /lc <n> lists chunks with more than n entities
     "lagchunks",
     # Adds /report and /rp, Stores reports with time and location

plugin.yml

@@ -1,5 +1,4 @@
 name: RedstonerUtils
 main: main.py
 version: 3.1.0
-author: redstone_sheep
+author: redstone_sheep
-