[wp-gsoc] [Summer of Code] #327: Convert current WP_Import tasks for statefulness

[Summer of Code]

#327: Convert current WP_Import tasks for statefulness
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 Reporter:  frederick.ding           |       Owner:
     Type:  enhancement              |      Status:  new
 Priority:  normal                   |   Milestone:  2013 Midterm (Beta)
Component:  Migration & Portability  |  Resolution:
 Keywords:  needs-unit-tests         |
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Comment (by frederick.ding):

 In [changeset:"2175"]:
 {{{
 #!CommitTicketReference repository="" revision="2175"
 General cleanup of inline documentation and whitespace; see #327, #331.

 - Also fixed `process_attachment()` to use true `base_url` param and to
 check
   `is_allowed_attachment_fetch()`.
 - Exposed `fetch_remote_file()` to public visibility.
 }}}

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Ticket URL: </ticket/327#comment:16>
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