support ^ pattern
Opened this issue · 4 comments
This pattern either matches the start of the string (without /m
) or matches immediately following a newline (with /m
).
There are several todo
tests is the suite that describe some of its proper behavior. We need more tests too.
Hi Michael,
^ produces an error (i assume it was working). I tried your test example
?- begin =~ '^beg'.
ERROR: Domain error: `regex' expected, found `'^beg''
ERROR: In:
ERROR: [10] throw(error(domain_error(regex,'^beg'),_5168))
ERROR: [7] <user>
ERROR:
ERROR: Note: some frames are missing due to last-call optimization.
ERROR: Re-run your program in debug mode (:- debug.) to get more detail.
?- version.
Welcome to SWI-Prolog (threaded, 64 bits, version 7.6.0-rc2)
i assume it was working
This feature has never worked quite right. That's why there's an issue for it. If you need reliable support for ^
, your best bet is to use SWI-Prolog's builtin regex library
Thanks, and no problem.
Note to anyone else who ends up in this ticket:
The pcre module was previously a pain in the 7.4.x series, I never got it working on OS X.
This is now bundled by default in the stable 7.6.x series, and seems to work great.