Unable to use backspace (gets converted to C-h)

[MorganJamesSmith]

Hello!

I'm trying to run emacs on tmux on kmscon.

Running emacs directly on kmscon means that certain key combinations get processed before emacs can see them. For example typing C-m only gives emacs "RET" instead of C-m. So I use tmux which seems to fix that issue for almost all keys.

The backspace key seems to be an exception though. When pressing backspace tmux sends emacs "C-h".

After quite a bit of research I believe the culprit may be src/shared//shl-pty.c:112.

	/* erase character should be normal backspace, PLEASEEE! */
	attr.c_cc[VERASE] = 010;

This bit of code seems to force the terminal to use C-h as the erase character. I would much prefer to use ^? as the erase character which I think might be more common now?

Honestly I've spent a long time looking at this stuff and I have more questions then when I started. Any help would be much appreciated.