mintty
mintty
Your .minttrc file was tampered with, by whoever. If it wasn't, it wouldn't even exist in the first place (in cygwin), not have setting Theme=dracula etc. In fact it is...
Backspace mode can be changed via escape sequences: DECRST 67 to make it emacs-friendly, DECRQM and DECSET or XTSAVE and XTRESTORE to restore. These could be put into a shell...
Did you start a new mintty window after the change? For a running mintty, you can check or switch the setting in the Options dialog, section Keys, first option there....
You quoted your .minttyrc file to contain `BackspaceSendsBS=yes` in a previous comment. It's hard to analyse the issue remotely. What does command `stty -a` say about the erase char? If...
I've just replayed the case in MSYS2 and ^H v prompts "Describe variable" for me.
Revisiting this issue, some more questions: In the mintty where emacs fails on ^H, what does the command `printf '\e[?67$p'` do? You don't run emacs in a wrapper with some...
I missed to ask a very basic question: Is it the native emacs package of your environment? What does `type emacs` say?
For me it says `emacs is /usr/bin/emacs`. That may well explain a difference. How did you install your package?
If you mean the Backspace key, it sends the DEL character by default, not BS, in cygwin, like in Linux. Can be reconfigured.
The package contains 4 triplets of CodeNewRoman, does it happen with any of them?