On Fri, 31 Aug 2018 09:59:52 -0400
Olivier Coutu wrote:
> I wrote a rule that throws a /variable length lookbehind/ error where
> the lookbehind is fixed length. Here is a MWE:
>
> body __Z_NEGATIVE_LOOKBEHIND /(?<!ss) text/i
>
> spamassassin --siteconfigpath=${HOME}/sa-rules/ --lint
> aoû 31 09:53:45.343 [9074] warn: config: invalid regexp for rule
> __Z_NEGATIVE_LOOKBEHIND: /(?<!ss) text/i: Variable length lookbehind
> not implemented in regex m/(?i)(?<!ss) text/
I get the same, with or without the UTF-8 non-break spaces.
> The error goes away if I remove the case insensitive, or if I put a
> character between the two /s/ characters. Using /nn/ instead of /ss/
> makes the error go away. The error stays if I add characters before
> or after the /ss/. Is there a special non-text signification to the
> characters /ss/?
gnu grep -P doesn't have a problem with it.
