Re: Pop-up font size with lucid toolkit (was: Question on updating to 29.1)

[Gregory Heytings]

> I see that some pop-ups (for example when you hover over some buttons in 
> a customize window) look different. I'd like to decrease their font, 
> which is too big, but I'm not managing to find the appropriate 
> customization item or variable. Does anyone know its name, or if 
> decreasing this font is at all possible?

It is possible.  You can either use the customize interface:

M-x customize-face RET tooltip RET

and change the height attribute there, or add a line to your init file:

(set-face-attribute 'tooltip nil :height 100)