bug#58282: Distinguishing glasses-mode display

[Eli Zaretskii]

> Date: Tue, 04 Oct 2022 03:36:34 +0000
> From:  uzibalqa via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 
> I am using "glasses-mode", but  It is difficult to distinguish which words 
> get changed. For instance, if one has a mixture of CamelCase, Under_scores 
> one would not know which is modified and which is original. Particularly 
> problematic when one is modifying the code.
> 
> Could "glasses-mode" be made in such way as to indicate that "glasses-mode" 
> changed its display, by default.

I think we have this already: customize glasses-face to some distinct
face, like 'bold'.  Then the capital letters of identifiers where
glasses.el inserted underscores will be shown in bold, and you can
visually distinguish them from the original underscores.