I am currently not able to reproduce this (tried bash, fish, zsh)...

Seems to happen if the window width is narrow and some of the content (e.g "help") overflows to a new line.

oh I probably never accounted for the help overflowing

not quite sure how we could deal with this. i have a similar obstacles implementing text input.

we have to make self.height not use just .lines() but also figure out how many times each line will overflow.

A couple of things will help with this:

• https://docs.rs/console/latest/console/fn.measure_text_width.html - this makes it possible to measure the actual screen width not including things like ascii codes
• https://docs.rs/console/latest/console/struct.Term.html#method.size - this will give us the terminal width

I guess the logic should be something like:

self.height = output.lines().count() + output.lines().map(|l| measure_text_width(l).len() / WIDTH).sum()

i see, something around iterating the lines and add 1 more for each that is longer than the terminal width

It seems certainly related to the help texts overflowing the terminal width but it seems, even adding lines by a more elaborate height calculation does not seem to help. Needs further investigation...

let max_width = self.term.size().1 as usize;
...
self.height = output
                 .lines()
                 .map(|l| measure_text_width(l).div_ceil(max_width))
                 .sum::<usize>();
...

did not find a fix yet, calling self.term.clear_last_lines(self.height)?; with an increased height does not seem to work

this seems to affect all inputs with lines which might overflow, hence renaming