Searching channel messages does not find all matching messages (substring match for flag_check inside flag_check.exe ?)

[gijsk]

Description

Re-filed from element-hq/element-web#29365

Steps to reproduce

1. https://chat.mozilla.org/#/room/#developers:mozilla.org
2. Click info button on the top right
3. Type "flag_check" in the search field

Outcome

What did you expect?

I expected it to find this message.

What happened instead?

It doesn't.

Homeserver

https://mozilla.modular.im/

Synapse Version

1.124.0

Installation Method

I don't know

Database

Unsure

Workers

I don't know

Platform

No idea. I don't run the homeserver; I'm simply re-filing the user-experienced issue with the search functionality based on feedback in element-hq/element-web#29365

Configuration

No response

Relevant log output

N/A

Anything else that would be useful to know?

The element client POSTs to _matrix/client/v3/search with:

{"search_categories":{"room_events":{"search_term":"flag_check","filter":{"limit":10,"rooms":["!lrZtdjyLpBmoKbMdyx:mozilla.org"]},"order_by":"recent","event_context":{"before_limit":1,"after_limit":1,"include_profile":true}}}}

and the resulting response does not contain the message linked above.