Mastodon: Server- and client-side bio and display name count endlines and emoji combinations inconsistently

[renatolond]

Hi!

When using UTF-8 chars (multi-byte ones, I assume), there's inconsistency in the "characters left" indication. I'm using mastodon.xyz which is in 1.4.7, problem still exists in 2.5.0rc1
When I submit the edited changes, the value that comes back it's smaller than the one that it's calculated by the frontend.

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• [X] I searched or browsed the repo’s other issues to ensure this is not a duplicate.
• [ ] This bug happens on a tagged release and not on master (If you're a user, don't worry about this).

[ariasuni]

The issue is that server-side bio character counts endlines as two characters, whereas client-side count it as one character.

For example:

t
t
t

• when editing, displays 155 characters left (client-side)
• after saving, 153 characters left (server-side)
• when editing again, 155 characters left (client-side)

This is particularly annoying when writing a bio with several endlines, because you can write a bio with the client-side code reporting that it fits into the character limit, but then rejected because the server-side code counted more characters.

Please rename the issue «Server- and client-side bio count endlines and emoji combinations inconsistently» or something like that.

[ariasuni]

The issue is the same with the display name, so I guess it’s the same code that must be fixed.

[danhunsaker]

The OSes in play will likely have an influence on this...