On 7/8/23 17:49, robert k Wild wrote:
So will this
(^|\.)redshift3d\.com$
I know it will match
Blah.redshift3d.com and redshift3d.com
But what about
Blah.Blah.redshift3d.com
It will also match, for the same set of reasons.
FWIW, I am worried that you keep asking about specific basic matching
examples. If necessary, you can test such matches online[1] or using
something like "grep -E" (not to mention Squid itself). The answers here
will vary in quality and will usually not cover what you really want to
know -- what input the regular expression will (not) match besides your
specific examples. Have you tried reading regular expression tutorials
and using tools[1] that explain the meaning of specific regular
expressions? There ought to be a better way to learn how regular
expressions work!
[1] For example: regexr.com/7gms6
Cheers,
Alex.
On Sat, 8 Jul 2023, 22:32 Alex Rousskov wrote:
On 7/8/23 06:14, Stuart Henderson wrote:
> On 2023-07-07, robert k Wild <robertkwild@xxxxxxxxx
<mailto:robertkwild@xxxxxxxxx>> wrote:
>> --===============6398075081121841451==
>> Content-Type: multipart/alternative;
boundary="000000000000a03dcc05ffeb4428"
>>
>> --000000000000a03dcc05ffeb4428
>> Content-Type: text/plain; charset="UTF-8"
>>
>> hi all,
>>
>> i know ive been talking about this before but i want to
understand why i
>> cant use this regex
>>
>> (^|.*)redshift3d.com <http://redshift3d.com>$
>
> this matches anythingredshift3d[any single character or nothing]com
Correction: A regular expression "." does _not_ match "nothing" (i.e.
zero characters).
In some contexts, "." may not even match some special single
characters,
but those contexts are probably not applicable to this thread scope.
>> instead i have to use this
>>
>> (^|\.)redshift3d.com <http://redshift3d.com>$ OR
>
> this matches redshift3d[any single character or nothing]com
> or anything.redshift3d[any single character or nothing]com
... or .redshift3d.com <http://redshift3d.com>
Same "nothing" correction here.
>> (^|\.)redshift3d\.com$
>
> this only matches redshift3d.com <http://redshift3d.com> or
anything.redshift3d.com <http://anything.redshift3d.com>
... or .redshift3d.com <http://redshift3d.com>
Alex.
> So, if you only want to match on things exactly in the
redshift3d.com <http://redshift3d.com>
> domain and no others, you need the last one.
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