Some terminal emulator authors (VTE, xterm, tmux, mintty, libvterm, iTerm2,
and others) are discussing building a new mechanism for reporting
capabilities. For context: https://github.com/mintty/mintty/issues/881

My goal is to collect desires from developers of popular applications. What
capabilities do you wish you could discover about terminals that you don't
already get from terminfo?

For example, being able to detect 24-bit color support, available cursor
styles, bracketed paste support, and mouse reporting modes are the kinds of
capabilities that would be included. They would likely be exposed through a
combination of a new environment variable and a to-be-determined control
sequence that reports them.

The results of this survey are being collected here:
https://docs.google.com/spreadsheets/d/1H4OK8z98ptySnAPjlej56lrL6b0S1j6okwp7KLRTDBQ/edit#gid=0
If you prefer not to use Google Docs, I have a PDF of its current contents
here: https://iterm2.com/misc/TerminalFeaturesCandidates1.pdf

Thanks in advance for your time, and apologies if this is the wrong forum
for this query—please redirect me if so!

-George