Emoji's being stripped from message subject in REST API

[niftythree]

Hi there,

We've been using the BuddyPress REST API through our app to provide messaging for our users, and it's been working great so far.

One peculiar thing we've picked up on recently, is that if there are emojis in the subject line of a message, it does not get delivered by the REST API (i.e. the emojis are removed).

In the attached image ("subject 1") from the website, Jone has received a message from Ana with emojis in the subject, and it appears correctly on the website. However, if we access Jone's inbox using the BuddyPress REST API, we can see that the emojis have been stripped out from the subject field.

Is there a configuration or setting that may be causing this, or would this be a bug?

Thanks.

• Filter subject, excerpt & content template functions using the wp_staticize_emoji callback.
• Update some Nouveau templates/ajax function to make sure these WP Emojis are rightly rendered.

Trac ticket: ​https://buddypress.trac.wordpress.org/ticket/8928

[imath]

In 13510:

Messages: use WP Emojis in subject, excerpt & content

• Add filters to subject, excerpt & content template functions using the wp_staticize_emoji callback.
• Update some Nouveau templates/ajax functions to make sure these WP Emojis are rightly rendered.

Props niftythree

Fixes #8928
Closes ​https://github.com/buddypress/buddypress/pull/123