[wp-trac] [WordPress Trac] #37928: add `pre_add_option` filter

[WordPress Trac]

#37928: add `pre_add_option` filter
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 Reporter:  flixos90            |       Owner:
     Type:  enhancement         |      Status:  new
 Priority:  normal              |   Milestone:  Awaiting Review
Component:  Options, Meta APIs  |     Version:
 Severity:  normal              |  Resolution:
 Keywords:  needs-patch         |     Focuses:
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Comment (by flixos90):

 [attachment:37928.diff] is a first take on introducing the filter. I used
 `null` as a return value to skip since `null` is very unlikely to be
 stored as option. However, it is not a perfect solution I think. I was
 wondering whether it might make sense to declare a `WP_DEFAULT_VALUE`
 constant, fill it with some random value, and use that in such cases.

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Ticket URL: <https://core.trac.wordpress.org/ticket/37928#comment:1>
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