More specific error codes in the core upgrader when copying language, plugin, and theme files. see #22704.

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3.7-beta2-25773

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In unzip_file(), confirm we have enough available disk space before extracting.

"enough" is calculated by adding up the uncompressed size of the files in the archive, then adding a 20% buffer.

props dd32.
fixes #25576.

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In the upgrader, only print additional error data if it is a string.

As in [25576], we sometimes want to return additional data that is not necessarily meant for UI consumption.

see #25576.

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Account for possible failures by disk_free_space(), as well as the potential need to copy the unzipped files.

see #25576.

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Auto updates: Only attempt a roll back when we've hit a critical error code.

Specifically, this means when we've failed in copying files.

see #22704.

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Account for the possible failure of disk_free_space() in update_core().

see #22704, #25576.

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Remove PHP4 compat code from the ZipArchive unzip handler, and pass the failure reason into the WP_Error return.

See #22704

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Parse absolute paths out of error data. see #22704.

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Automatic updates: Include error data in the follow-up API request.

props dd32.
see #22704.

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Automatic updates: An error code containing 'do_rollback' can be used to trigger a rollback.

This could enable the triggering of a rollback in update_core() in wp-admin/includes/update-core.php.

see #22704.

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git-svn-id: http://core.svn.wordpress.org/trunk@25695 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Hide auto updates from update-core.php directly in get_core_updates(). see #22704.

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git-svn-id: http://core.svn.wordpress.org/trunk@25696 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Hide language-specific warnings/labels on update-core.php when we are dealing with a point release partial build.

see #22704, #18200.

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Revert [25202] and enforce that wp_add_inline_style() does not want <style> tags.

Prior to 3.7, these tags were not printed (and thus needed to be provided), but only in the admin and when concatenation was enabled. They should never be required. Strip them when we find them and issue a notice for incorrect usage.

props atimmer, georgestephanis.
fixes #24813.

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Fix a misspelling of the filter we're checking for, s/fs_method/filesystem_method/.
My bad. See #22704, [25781].

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Twenty Fourteen: first pass at CSS revamp, props iamtakashi. See #25592.
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Twenty Thirteen: use correct font name in comment docs, props tenpura. Fixes #25593.
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Twenty Fourteen: remove `style` tags from accent color output, following r25786. Fixes #25599, props celloexpressions.
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Twenty Thirteen: fix description layout on attachment outputs, props obenland. Fixes #25578.
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Twenty Fourteen: minor fixes to docs, props celloexpressions. See #25257
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