sanitize_file_name disallows acute accents and left smart apostrophe

[jdorner]

The following change to line 1991 of wp-includes/formatting.php will disallow acute accents and left smart apostrophe in file names

$special_chars = array( '?', '[', ']', '/', '\\', '=', '<', '>', ':', ';', ',', "'", '"', '&', '$', '#', '*', '(', ')', '|', '~', '`', '´', '!', '{', '}', '%', '+', 'ʻ','’', '«', '»', '”', '“', chr( 0 ) );

[jdorner]

After further review, should all extended ASCII codes (character code 128-255) be excluded or are these valid in a URL?

[hellofromTonya]

Hello @jdorner,

Welcome to WordPress Core's Trac! Thank you for reporting this.

Adding contextual information:
This change was introduced in changeset [48596] for ticket #50231 in the 5.5 release as part of the Media component. Updated ticket information.

[justinahinon]

Thanks for opening the ticket @jdorner.

I think we might need some additional information from the media team about the policy for filenames.

Adding a keyword and pinging a component maintainer.
cc @mikeschroder

[mai21]

@jdorner Can you please provide a use case or step-by-step instructions on how to reproduce the issue?

Thanks

[jdorner]

file with acute accent in the filename - unable to upload to media library

[lukefiretoss]

Post-processing of the image failed likely because the server is busy or does not have enough resources. Uploading a smaller image may help. Suggested maximum size is 2500 pixels.

Is the message that shows in the media library if an image is being uploaded that contains an apostrophe in the file name.

[antpb]

Moving to 6.3 to investigate if this is still valid and what needs to happen.