fix(window): prevent win_size_restore from changing cmdheight

Currently it only skips if `Rows` changed, but it's possible for the height of
the usable area for windows to change (e.g: via `&ch`, `&stal` or `&ls`), which
can cause the value of `&cmdheight` to change when the sizes are restored.

This is a Vim bug, so I've submitted a PR there too. No telling when it'll be
merged though, given the current lack of activity there.

`ROWS_AVAIL` is convenient here, but also subtracts the `global_stl_height()`.
Not ideal, as we also care about the height of the last statusline for other
values of `&ls`. Meh.

Introduce `last_stl_height` for getting the height of the last statusline and
use it in `win_size_save/restore` and `last_status` (means
`last_status_rec`'s `statusline` argument will now be true if `&ls` is 3,
but that does not change the behaviour).

Also corrects the logic in `comp_col` to not assume there's a last statusline
if `&ls` is 1 and the last window is floating.

0 files changed, 0 insertions, 0 deletions