When to use (?-si)?

[Knowledge Base]

Hello,

in another post I found the expression “(?-si)(location='WINDOWS[0]).*?(?=[option)”.

I tried to find out what (?-si) means because searching and replacing in this example also works without (?-si), but didn’t find anything.
Can someone tell me exactly what (?-si) does?

Thanks for your help

[Ekopalypse]

@Knowledge-Base

these are the so called modifiers.
the s handles if the dot wildcard can match end of line chars as well
the i handles the case sensitivity
a minus in from of one modifier disables the default behavior of that modifier.
You can read more about that here , (which at the moment is down) or here .

[Knowledge Base]

Hi Ekopalypse,

thanks a lot.

[PeterJones]

@Ekopalypse said:

read more about that here, (which at the moment is down)

Down for good, actually. The githubio link was always meant as temporary. https://npp-user-manual.org/docs/searching/#regular-expressions is the new long-term home, linking directly to the regex docs.