Glow does not work properly when run in a group or session

[ferdinandyb]

Describe the bug
I wanted to run glow with watchexec that re-runs programs on file changes for a live markdown preview. It did not work at all (no visible output). I took this up with watchexec, but they gave me this information:

That is, this is a glow problem in that it doesn't handle being run in a group or session.

Using the --wrap-process modes:

• group (default): pager output doesn't show, glow no longer responds to SIGTERM (as sent by watchexec on Ctrl-C).
• session mode: glow outright crashes.
• none: it works.

My addition to the last: it works but actually you need to kill glow manually, so it's no upgrade on pressing r in glow itself.

watchexec/watchexec#901 (comment)

Setup
I'm running CachyOS and a very recent Contour Terminal.

❯ glow --version
glow version 2.0.0

To Reproduce

Do something like:

watchexec -w README.md  -- glow README.md