id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
23509,Conditional function that lets you know if your site is being viewed through the Customizer,nathanrice,,"I can provide a use case if necessary, but this should be relatively simple.

If I need to do something special with my theme when my site is being viewed through the customizer, there's no easy way determine if it is.

A simple `is_customizer()` (or similar) function would be incredibly useful in this scenario.

I'd write up a patch, but I don't know where to put the new function.",enhancement,new,normal,Awaiting Review,Appearance,,normal,,2nd-opinion has-patch needs-testing,sammybeats erick@… philip@…