RE: 23.0.60; tiny font in Customize button

[Drew Adams]

> >>> emacs -Q
> >>> M-x customize-option adaptive-file-first-line-regexp
> >>> 
> >>> The Hide Rest button has a tiny, tiny font. See attached 
> screenshot.
> >> 
> >> I wonder why the Hide Rest button has a link appearance?
> >> Since it doesn't lead anywhere, I think it should be displayed
> >> as a button.
> 
> > It's pretty ugly as a button.
> 
> Could we use one of those triangles that either points rightward
> (closed/hidden/folded) or downward (open/shown/unfolded)?

Maybe, but it might need a tooltip (and maybe a label).
Perhaps put the arrow at the end of the doc-string first line?