[wp-trac] [WordPress Trac] #21622: Validate or sandbox theme file edits before saving them (as is done for plugins)

[WordPress Trac]

#21622: Validate or sandbox theme file edits before saving them (as is done for
plugins)
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 Reporter:  eschwartz93  |       Owner:  westonruter
     Type:  enhancement  |      Status:  accepted
 Priority:  high         |   Milestone:  4.9
Component:  Themes       |     Version:  2.7.1
 Severity:  normal       |  Resolution:
 Keywords:  needs-patch  |     Focuses:  administration
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Comment (by westonruter):

 Demo of what I have working so far:
 https://wordpress.slack.com/files/U02RR79S2/F7C97BS0J/plugin-live-editing-
 via-ajax-and-without-deactivation.mov

 It's working well!

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Ticket URL: <https://core.trac.wordpress.org/ticket/21622#comment:24>
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