wp_user_update does not update custom user meta fields

[simongcc]

Version: 3.8

Problem explanation:
according to user.php => wp_update_user()
in line Add additional custom fields, the loop did do the job and read the custom fields into the array and store in $userdata, however,
when wp_insert_user($userdata) read the data and insert the data into DB, the custom fields are gone and not being saved

Cause of the problem:
in wp_insert_user()
because final data are using
$data = compact( 'user_pass', 'user_email', 'user_url', 'user_nicename', 'display_name', 'user_registered' );
and this method exclude all the custom fields other than default variables.

Suggested solution:
add a foreach to read all the key name from $userdata at the beginning of wp_user_data()
when using compact using foreach and $$var to create the array for output

Workaround or other solution:
I think most people are doing this using update_user_meta() to accomplish the job but if there is many fields, this might not be very effective.

[simongcc]

In suggested solution:
add a foreach to read all the key name from $userdata at the beginning of wp_user_data()
should be wp_insert_user()

[chriscct7]

Closing as wontfix. Complete lack of interest on the ticket over the last 2 years, and by now, most developers affected would have worked around this in their plugins. Feel free to reopen when more interest re-emerges (particularly if there's a patch)