Text underlining gets lost after conversion from .cast to .gif (it works in archived asciicast2gif)

[amalota]

To reproduce, do:

run asciinema rec --command='echo -e "\033[4mlolxd"' /tmp/bug_repro.cast that results in:

then run agg /tmp/bug_repro.cast /tmp/bug_repro.gifs that results in gif without underline:

[ku1ik]

Yep, agg currently doesn't render underline. Should be relatively easy to add though.

[ku1ik]

Meanwhile, there's actually alternative renderer implementation that you can use with --renderer resvg option which supports underline text.