Using @ to mention another user is not consistent across platforms

[daniellekirkwood]

When the user types "@" on mobile a list of options shows on Android.

On iOS and Web, the user must type "@" followed by a character.

We should align on which we'd like to implement and the create the issues on the corresponding platforms to make that the case.

Reference: element-hq/element-web#24018

In web, this looks like:

[daniellekirkwood]

@jakewb-b did y'all address this question as part of the RTE work? Have we already reached a conclusion on this - might be an easy one to close out?

@VolkerJunginger & @amshakal Do you have thoughts? Once a conclusion has been reached we should implement it in EX only (and not the classic apps)

My personal preference is to only show the drop-down/up when the user has typed "@" and a letter as this is likely to be better for performance in large rooms.

[daniellekirkwood]

Decision made @jakewb-b & @daniellekirkwood 22/02/2023:

• All platforms should wait for first character before showing a list of available options
• We will open a discussion that is an enhancement to build a "suggested" list to show before the user has selected a letter. This list could include @room and @recents for example

Internal conversation reference

[amshakal]

This seems like a sound solution to me

[daniellekirkwood]

Issue created: element-hq/element-android#8156