From b387a1ce4a8fe1d9d631aa773a094cb28ddb4c19 Mon Sep 17 00:00:00 2001
From: Gusted <postmaster@gusted.xyz>
Date: Tue, 11 Nov 2025 04:45:15 +0100
Subject: [PATCH] fix: less restrictive matrix room_id pattern (#10056)

- Matrix room v12 made the room ID domain-less.
- The exact format varies across room versions, so don't try to give a
new regular expression, simply require the input starts with `!`.
- Resolves forgejo/forgejo#9341

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/10056
Reviewed-by: Otto <otto@codeberg.org>
Reviewed-by: oliverpool <oliverpool@noreply.codeberg.org>
Reviewed-by: 0ko <0ko@noreply.codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>
---
 templates/webhook/new/matrix.tmpl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/templates/webhook/new/matrix.tmpl b/templates/webhook/new/matrix.tmpl
index 1850bab315..e8ba210187 100644
--- a/templates/webhook/new/matrix.tmpl
+++ b/templates/webhook/new/matrix.tmpl
@@ -12,7 +12,7 @@
 	</div>
 	<div class="required field {{if .Err_Room}}error{{end}}">
 		<label for="room_id">{{ctx.Locale.Tr "repo.settings.matrix.room_id"}}</label>
-		<input id="room_id" name="room_id" type="text" value="{{.HookMetadata.Room}}" placeholder="!opaque_id:domain" pattern="^!.+:.+$" maxlength="255" required>
+		<input id="room_id" name="room_id" type="text" value="{{.HookMetadata.Room}}" placeholder="!opaque_id" pattern="!.+" maxlength="255" required>
 		<span class="help">{{ctx.Locale.Tr "repo.settings.matrix.room_id_helper" ("<code>!opaque_id:example.org</code>"|SafeHTML)}}</span>
 	</div>
 	<div class="field">