RE: Recent commit modifying mark-whole-buffer (master/aeb613ea95b7970e66d663ec5cba54e9ec0528fa)

[Drew Adams]

> > I think the prompt should be more amenable to Lisp (not
> > done in C), and that any prompt features (including text
> > properties, including `face' and read-only) should be default
> > behavior only.  At least a start would be to allow code to
> > provide a propertized prompt (esp. wrt `face') and have that
> > be used/respected and not overwridden.
> 
> There's already a face 'minibuffer-prompt', so I'm not sure what else
> needs to be done wrt the face of the prompt.

See "should be default behavior only".