The formatting for `map f1 pipe @ansi overlay less +G -R` is off on macos

[nerdrew]

Using kitty_mod+h to show_scrollback, my scrollback looks like:

Using f1 to pipe @ansi overlay less +G -R -n, my scrollback looks like:

[kovidgoyal]

Works for me, with:

kitty -o "map=f1 pipe @ansi overlay less +G -R -n"

[nerdrew]

Hmmm. I set my scrollback_lines to 200 before running the for i in $(seq 0 400); echo $i loop shown in the screenshot. As you can see, the syntax highlighting disappears in the pipe version, while it is visible in the show_scrollback version.

Also, there is consistently a missing newline at the first line outside of the current viewport.

Here's the prompt after running the for loop above:

Here's scrolling up 3 lines:

Is it possible that this is caused by something in my config or a mac only issue?

[Luflosi]

I can reproduce the issue with the missing newline but the text color works for me. I'm also using a Mac.
I'm starting kitty using kitty.app/Contents/MacOS/kitty --config NONE -o "map=f1 pipe @ansi overlay less +G -R -n". I scrolled two lines up.
type -a less outputs less is /usr/bin/less for me.

[nerdrew]

To get the color issue, you need to have the scrollback go into the "pager" history, not the scrollback_lines. I used this to repro:

kitty -o "map=f1 pipe @ansi overlay tee boom.log" -o "scrollback_lines 100" --config NONE -o "scrollback_pager_history_size 100"

Then make sure you push the colorized text past the regular scrollback lines (hence the for loop in my example above).