Username completion ordering: shorter/exact match sorted after longer incomplete match

[mcint]

Description

Username completion ordering: when I type a username, @... I expect to see the shorter/exact match sorted before the longer incomplete match, but this is not the current behavior.

Steps to reproduce

• Find/create users with matching-prefix names, ideally where one username is a prefix of the other, @prefix & @prefixuser
• Type @ to begin tagging, at @prefix
• (I observe) @prefixuser first in the suggestions and tab completion, despite that it should come later in lexicographic order.

Is there some kind of special casing of completion on shorter or complete/terminated words/tokens?

Logs being sent: no

Screenshot

Shows chat text-entry box, with user-completion initiated.
Text: @dk
Completion: @dkess then @dk

Version information

• Platform: desktop

For the desktop app:

• OS: macOS
• URL: private, 1.7.10

[SimonBrandner]

I'll dump my thoughts here before I forget:

Originally, I thought this is going to be an easy thing to do but it doesn't seem to be that easy: We use both mxids and display names when searching. That means that if we try to order the completions by length and I type @mat, I'll get the user with mxid lx:matrix.org first (in #element-dev). The only solution I can see right now is to cut off the server part of the mxids, which isn't ideal