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change to behavior of '&' in pattern substitution replacement string; fix for blank lines in multiline commands saved in command history

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Chet Ramey
2022-01-18 10:59:53 -05:00
parent 5e6f45d9b1
commit 2a1c81bf63
31 changed files with 1596 additions and 1312 deletions
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tests/dynvar.tests
+9 -4
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@@ -50,15 +50,20 @@ unset before after
# EPOCHSECONDS
# not exact, but should work
# could also use python -c 'import time; ts = int(time.time()); print(ts)'
now1=$(perl -e 'print time')
# date +%s should be portable enough now
# then try gawk, perl, python in that order
now1=$(date +%s 2>/dev/null) D=date
[ -z "$now1" ] && now1=$(gawk 'BEGIN { print systime(); }' 2>/dev/null) D=gawk
[ -z "$now1" ] && now1=$(perl -e 'print time' 2>/dev/null) D=perl
[ -z "$now1" ] && now1=$(python -c 'import time; ts = int(time.time()); print(ts)' 2>/dev/null) D=python
now2=$EPOCHSECONDS
case $now1 in
$now2) echo EPOCHSECONDS ok ;;
*) echo "current time via perl and EPOCHSECONDS possible mismatch|$now1|$now2" >&2 ;;
'') echo "cannot get current time using date/gawk/perl/python" >&2 ;;
*) echo "current time via $D and EPOCHSECONDS possible mismatch|$now1|$now2" >&2 ;;
esac
unset now1 now2
unset now1 now2 D
LC_ALL=C # force decimal point to `.'
now1=$EPOCHREALTIME