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Add FreeBSD stty workaround for pty regression tests

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Apparently, on FreeBSD, the stty command does not work correctly
for setting 'erase' or 'kill' on a pty pseudoterminal. I've no
idea whether the bug is in FreeBSD stty or in AST pty, but in any
case, a workaround is needed for the time being.

src/cmd/ksh93/tests/pty.sh:
- Save terminal state on init; set a trap to restore it on exit.
- Issue 'stty erase ^H kill ^X' on the real terminal before
  entering pty pseudoterminals.

Resolves #44.
This commit is contained in:
Martijn Dekker 2020-07-13 21:24:14 +02:00
parent 66c955bc8f
commit 8ad56f90ab
1 changed files with 6 additions and 0 deletions
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6
src/cmd/ksh93/tests/pty.sh
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@ -44,6 +44,12 @@ integer Errors=0 lineno=1
[[ -d $tmp && -w $tmp ]] || { err\_exit "$LINENO" '$tmp not set; run this from shtests. Aborting.'; exit 1; }
whence -q pty || { lineno=$LINENO; err\_exit "$LINENO" "pty command not found -- tests skipped"; exit 0; }
# On FreeBSD, the stty command does not appear to work correctly on a pty pseudoterminal.
# To avoid a couple of false regressions, we have to set 'erase' and 'kill' on the real terminal.
stty_restore=$(stty -g) || { lineno=$LINENO; err\_exit "$LINENO" "could not save terminal state -- tests skipped"; exit 0; }
trap 'stty "$stty_restore"' EXIT # note: on ksh, the EXIT trap is also triggered for termination due to a signal
stty erase ^H kill ^X
bintrue=$(whence -p true)
x=$( $SHELL <<- \EOF