refactor: narrow trpg roll message matching

konabot/plugins/trpg_roll/__init__.py

@@ -1,7 +1,10 @@
+import re
+
 import nonebot
 from nonebot.adapters import Event
 from nonebot_plugin_alconna import UniMessage, UniMsg
 
+from konabot.common.nb import match_keyword
 from konabot.common.permsys import register_default_allow_permission, require_permission
 from konabot.plugins.trpg_roll.core import RollError, roll_expression
 
@@ -11,18 +14,15 @@ register_default_allow_permission(PERMISSION_KEY)
 
 
 matcher = nonebot.on_message(
-    rule=require_permission(PERMISSION_KEY),
+    rule=match_keyword.match_keyword(re.compile(r"^roll(?:\s+.+)?$", re.I))
+    & require_permission(PERMISSION_KEY),
 )
 
 
 @matcher.handle()
 async def _(event: Event, msg: UniMsg):
     text = msg.extract_plain_text().strip()
-    lowered = text.lower()
-    if lowered == "roll" or lowered.startswith("roll "):
-        expr = text[4:].strip()
-    else:
-        return
+    expr = text[4:].strip()
 
     if not expr:
         await UniMessage.text("用法：roll 3d6 / roll d20+5 / roll 2d8+1d4+3 / roll 4dF").send(event)