Restore the env + redirect setup that the previously-working ISO
installer used (matching /home/ryan/Downloads/ISO scripts/.automated_script.sh):
export COLUMNS=$(tput cols)
export LINES=$(tput lines)
exec > >(tee >(sed CSI-strip >> log) 2>/dev/null) 2>/dev/tty
export CLICOLOR_FORCE=1
export FORCE_COLOR=1
The cutover commit (064b5e2) silently dropped these. Subsequent
attempts to fix the TTY/gum rendering by reshaping the redirect were
all symptom-chasing — the proven shape was correct. The key insight:
- gum draws its TUI on stderr, not stdout. 2>/dev/tty keeps that
rendering on the real terminal.
- stdout-as-pipe (via tee) is *desired*: it lets gum detect a
non-TTY stdout and skip cursor-position probes (CSI 6n). Without
that detection, the DSR replies leak as visible ^[[13;1R bytes.
- CLICOLOR_FORCE/FORCE_COLOR force gum to still emit colour despite
stdout being a pipe.
Also drops the configurator's _drain_tty workaround — unnecessary
once gum stops sending DSR queries in the first place.
Ryan Hughes
16cc1058be