54688: handle Stéphane correctly

In the original report we had [[ é = *$'\xa9' ]] which has op == P_STAR,
in this case charstart is filled out inline, in the other cases it's
done by the patrepeat function. If ptlen > P_LS_LEN(next) we have
returned, if it is < then we have backtracked into the region where
charstart is valid and we can check that, and finally if they are equal
we know we are on a valid character boundary (but charstart might not be
valid here, in fact multiple tests fail if you leave out the ptlen
check).

Separately,
% [[ éé = é#$'\xa9' ]]; echo $?
 pattern.c:4113: closure following more than one character
0
% [[ éé = (é)#$'\xa9' ]]; echo $?
1
so just treat multibyte single characters as "not simple", which fixes
that case too.

0 files changed, 0 insertions, 0 deletions