Versions difference during processing urls with parameters

[frome Profile]

While upgrading from 2 to 3 version I noticed one problem during processing urls with '?' symbol.

See the screenshots for how regex matching in thee 2 versions (teh regex test utilities are shown)

isapi_rewrite_2vs3.png (43.59 KiB) Viewed 2490 times

isapi_rewrite_2vs3_question_symbol.png (30.48 KiB) Viewed 2490 times

That's possible the regex rules are changed for 3-d version - but I still see this small note about using the special symbols as "symbols":

http://www.helicontech.com/isapi_rewrite/doc/regex.htm

Literals
All characters are literals except: ".", "*", "?", "+", "(", ")", "{", "}", "[", "]", "^" and "$". These characters are literals when preceded by a "\". A literal is a character that matches itself.

Could you please comment why 3-d version has this difference in processing the same regex above?

[HeliconAndrew]

Hello,

The regExp didn't change in version 3, however the syntax was changed a little.
Please, see "URLs with question mark don't work" in FAq - http://www.helicontech.com/forum/10648-FAQ.html

Regards
Andrew

[frome Profile]

Thank you for details, Andrew.

I just propose to include that exceptions to the documentation as well. (I didn't notice the link from there to this FAQ really after the quick look)