test/Regex/regex_replacefn.baseline

$0=abcd
$1=a
$2=b
$3=c
$4=d
offset=2
input=xxabcdxxabcdxx
$0=abcd
$1=a
$2=b
$3=c
$4=d
offset=8
input=xxabcdxxabcdxx
xxabcdxxabcdxx
abcxyz
10
0
0
_abc_abc