edit existing message in room

[progserega]

Add support to edit exist message for owner.

For example for monitoring systems bot:

1. Occur trouble in system X
2. Monitor software create ticket Y
3. Matrix bot send to matrix-room of tech-support message "ticket Y in system X is NEW state" with matrix-event-id Z
4. Any tech support engineer fix trouble in system X
5. Monitor software close ticket Y
6. Matrix bot modify message with matrix-event-id Z to "ticket Y in system X is CLOSE state"

Steps 3-6 may be occur many times (change NEW->OPEN, OPEN->PROCESS and e.t.c).
This feature (edit message) - can reduce many doubles of some messages with some text.
This feature is in slack. It is very nice for corporate use.

[neilisfragile]

matrix-org/matrix-spec-proposals#1695
matrix-org/matrix-spec-proposals#441 are related

[richvdh]

also element-hq/element-web#1862

[richvdh]

this seems to have been basically implemented.