Improve support for kill-whole-line

[hpfr]

Hi, thanks for making Puni, I appreciate the philosophy behind it.

One thing that’s been bothering me is that with kill-whole-line set, puni-kill-line correctly kills through \n but then puts point at the start of the next expression instead of remaining at column 0. This means the next invocation of puni-kill-line will not kill through \n, so you have to press C-k twice per line or alternate C-a and C-k as you would if kill-whole-line were unset.

I’m used to kill-whole-line enabling me to repeatedly C-k to quickly kill multiple lines, where n presses of C-k results in n killed lines.

Of course, soft deletion should take precedence. So when there is a closing delimiter on the current line, puni-kill-line should still stop there. But outside of that case, I would like puni-kill-line to keep point at column 0, so that while inside a balanced expression, each C-k kills a full line while at column 0.

Does this make any sense? Thanks!