> On Apr 20, 2018, at 8:03 AM, @lbutlr <krem...@kreme.com> wrote:
>
> The biggest issue between regex (POSIX) and PCRE is that POSIX regex is
> greedy. that is, it matches the longest possible left, while PCRE matches the
> shortest possible left.
That's false (example uses a Bash in-line file):
$ postmap -q aaa pcre:<(printf '%s\n' '/(a*)(a)/ $1:$2')
aa:a
however, PCRE does also provide non-greedy "*" and "+" variants:
$ postmap -q aaa pcre:<(printf '%s\n' '/(a+?)(a)/ $1:$2')
a:a
$ postmap -q aaa pcre:<(printf '%s\n' '/(a*?)(a)/ $1:$2')
:a
--
Viktor.
