[wp-trac] [WordPress Trac] #64318: ↗ should not be replaced by Twemoji

[WordPress Trac]

#64318: ↗ should not be replaced by Twemoji
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 Reporter:  Joen          |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Emoji         |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:
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Changes (by iflairwebtechnologies):

 * keywords:   => has-patch
 * version:   => trunk


Comment:

 This patch prevents mathematical arrow symbols such as **↦ ↤** ↥ ↧ from
 being incorrectly converted into Twemoji. These characters belong to the
 Mathematical Operators block and represent functional or logical notation,
 not emoji. Replacing them with Twemoji changes the meaning of the text,
 which is especially problematic in technical, mathematical, or academic
 content.
 The patch introduces:

 - **PHP safeguard** in wp_staticize_emoji() to explicitly skip math arrow
 characters.

 - **JavaScript regex fix** in wp-emoji.js to exclude the Unicode range
 **U+21A6–U+21AA**, ensuring consistent behavior across both backend and
 frontend.

 This restores the expected behavior seen in WordPress 6.8 and earlier,
 ensuring that math symbols remain unchanged and are not interpreted as
 emoji.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64318#comment:3>
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