matshyeq <matshyeq@gmail.com> writes: > I can see postgresql claims to supports regular expression flags:
Yup. > What I find don't makes sense to me is that those flags could be used to > switch on/off match feature locally as opposed to the whole regex (same as > though flags parameters of regex functions).
Not all of them would make sense locally; in fact I'd venture that case-sensitivity is the *only* flag that anyone would consider using that way. > Perl supports that locality while postgres documentation says: > "*An ARE can begin with embedded options: a sequence (?xyz) (where xyz is > one or more alphabetic characters) specifies options affecting the rest of > the RE.
Right. It says "begin with" and it means "begin with".
We are not Perl and are not attempting to be bug-compatible with its regex engine. If you want bug-compatibility, see PL/Perl.
