On 7/8/23 06:14, Stuart Henderson wrote:
On 2023-07-07, robert k Wild <robertkwild@xxxxxxxxx> wrote:
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hi all,
i know ive been talking about this before but i want to understand why i
cant use this regex
(^|.*)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$ OR
this matches redshift3d[any single character or nothing]com
or anything.redshift3d[any single character or nothing]com
... or .redshift3d.com
Same "nothing" correction here.
(^|\.)redshift3d\.com$
this only matches redshift3d.com or anything.redshift3d.com
... or .redshift3d.com
Alex.
So, if you only want to match on things exactly in the redshift3d.com
domain and no others, you need the last one.
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