[wp-trac] [WordPress Trac] #35951: remove_accents() doesn't escape Unicode NFD characters

[WordPress Trac]

#35951: remove_accents() doesn't escape Unicode NFD characters
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 Reporter:  onnimonni                     |       Owner:  audrasjb
     Type:  defect (bug)                  |      Status:  closed
 Priority:  normal                        |   Milestone:  6.1
Component:  Charset                       |     Version:
 Severity:  normal                        |  Resolution:  fixed
 Keywords:  has-patch add-to-field-guide  |     Focuses:
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Comment (by peterfabian1000):

 Hi, I just wanted to leave a comment here that it seems some people are
 having problems with not having `Normalizer` class available in their
 environment, which is problematic for some plugins that call
 `remove_accents` more often (like WooCommerce, ref issue
 https://github.com/woocommerce/woocommerce/issues/35471).

 Besides, there are some core workflows that may end up with a fatal error
 as well. E.g. when the admin tries to create a new user with accented
 characters, `sanitize_user` calls `remove_accents` and if they don't have
 `Normalizer`, it will throw a fatal.

 I suppose it should be possible to fail more gracefully, or only use
 `Normalizer` if `get_loaded_extensions` includes `intl`?

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Ticket URL: <https://core.trac.wordpress.org/ticket/35951#comment:19>
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