[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:
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Charset            |     Version:
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
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Comment (by zodiac1978):

 Replying to [comment:1 johnbillion]:
 > Out of interest, how are you interacting with an HFS filesystem? Are you
 copying files from a volume that uses HFS? AFAIK, you cannot run OS X on
 HFS.
 >
 > I would hazard a guess that this is a limited edge case (not saying it's
 not a bug, just that it's likely a very uncommon situation to find
 yourself in).

 The problem with NFD is true for HFS and HFS+, see:
 https://en.wikipedia.org/wiki/HFS_Plus#Design

 And HFS+ is the default filesystem for all Mac OS X computers.

 This patch would fix it, as it adds the mentioned `normalizer` function
 from PHP (if it exists) to the `sanitize_filename` filter:
 https://core.trac.wordpress.org/attachment/ticket/30130/30130.2.diff

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Ticket URL: <https://core.trac.wordpress.org/ticket/35951#comment:4>
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