feature request: wider font-size support

[Tux]

There currently is a limited support for font-se changes once a session started. If the font supports unlimited sizes, I's like to be able to use Shift-KP_PLUS and Shift-KP_MINUS like in xterm to grow/shrink font size. This is very useful when using elvis in presentations or screen-sharing (zoom/teams sessions). Related issue is that the '_' sometimes is invisible in some resolutions with some fonts on some font sizes (yes, that is explicitely vague as I found no al-ways-reproducing test case), and this is regardless of the setting for aasqueeze, though I think that allowing negative values for aasqueeze might fix that

[mbert]

Sounds like a nice feature, but I have no idea how to implement this (I am not the original author, and I have no experience with GUI programming). Would you like to have a go yourself? Or shall we leave this ticket open until somebody picks it up?

[Tux]

I am not a (C)GUI prammer myself either, so I certainly won't have the tuits to pick up on the PLUS/MINUS request, but it is likely that I will try to dig into the aasqueeze issue. If I find anything I'll either make a new issue or if I am confident enough, a PR

[mbert]

OK, so I will leave this open for now. Since I use a Mac quite a lot I don't use Elvis' X11 GUI very seldomly anyway...

[Tux]

PR for aasqueeze submitted. That proved to be easy (and useful)