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fix: extend ESC sequence timeout and avoid accidental quit on any key

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Tw93
2025-10-02 15:26:14 +08:00
parent a712969d65
commit cd786bee89
1 changed files with 7 additions and 6 deletions
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13
lib/common.sh
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@@ -106,11 +106,11 @@ read_key() {
'?') echo "HELP" ;;
$'\x7f'|$'\b') echo "BACKSPACE" ;; # Support Backspace
$'\x1b')
# Non-blocking, byte-by-byte escape sequence parsing to avoid leaking 'A'/'B'
# ESC sequence handling. Allow slightly longer window so we don't misinterpret slow terminals.
local next third
if IFS= read -r -s -n 1 -t 0.02 next 2>/dev/null; then
if IFS= read -r -s -n 1 -t 0.15 next 2>/dev/null; then
if [[ "$next" == "[" ]]; then
if IFS= read -r -s -n 1 -t 0.02 third 2>/dev/null; then
if IFS= read -r -s -n 1 -t 0.15 third 2>/dev/null; then
case "$third" in
'A') echo "UP" ;;
'B') echo "DOWN" ;;
@@ -119,15 +119,16 @@ read_key() {
*) echo "OTHER" ;;
esac
else
# ESC [ then timeout – treat as OTHER to ignore
echo "OTHER"
fi
else
# ESC followed by something else (e.g. ALT key combos)
# ESC + something (Alt modified key) → ignore as OTHER
echo "OTHER"
fi
else
# Bare ESC = quit
echo "QUIT"
# Bare ESC alone: instead of quitting directly, emit OTHER so user doesn't exit accidentally
echo "OTHER"
fi
;;
*) echo "OTHER" ;;