20030321 version:
Jul 29, 2003:
fixed (i think) the long-standing botch that included the beginning of
line state ^ for RE's in the set of valid characters; this led to a
variety of odd problems, including failure to properly match certain
regular expressions in non-US locales. thanks to ruslan for keeping
at this one.
Jul 28, 2003:
n-th try at getting internationalization right, with thanks to volker
kiefel, arnold robbins and ruslan ermilov for advice, though they
should not be blamed for the outcome. according to posix, "." is the
radix character in programs and command line arguments regardless of
the locale; otherwise, the locale should prevail for input and output
of numbers.
i have rescinded the attempt to use strcoll in expanding shorthands in
regular expressions (cclenter).
Jul 4, 2003:
fixed bug that permitted non-terminated RE, as in "awk /x".
Jun 1, 2003:
subtle change to split: if source is empty, number of elems
is always 0 and the array is not set.
3096cb5549