Files
cl-tty/demo
Hermes 2b2119a2f1 Shell wrapper for terminal raw mode, demo no longer sets raw mode
Added ./demo shell script that sets raw mode via stty before running
the Lisp demo and restores it on exit (including SIGINT/SIGTERM).

demo.lisp no longer attempts to set raw mode from inside SBCL —
terminal raw mode is the shell's responsibility.  This avoids the
recurring problem of sb-ext:run-program + stty not being able to
access the controlling terminal from inside sbcl --script.
2026-05-12 01:43:52 +00:00

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#!/bin/sh
# cl-tty demo launcher
# Sets raw terminal mode, runs the demo, restores terminal on exit.
# This is needed because SBCL's --script mode + run-program combo
# can't reliably set raw mode from inside the Lisp process.
SAVED=$(stty -g 2>/dev/null)
if [ -z "$SAVED" ]; then
echo "ERROR: Not running in a real terminal." >&2
echo " Try: sbcl --script demo.lisp" >&2
exit 1
fi
cleanup() {
stty "$SAVED" 2>/dev/null
}
trap cleanup EXIT INT TERM
stty raw -echo -isig -icanon min 1 time 0 2>/dev/null
sbcl --script "$(dirname "$0")/demo.lisp"