This should do that:
\define myregexp() ^([a-zA-Z]+\.){2}[a-zA-Z]+$
<<list-links "[regexp<myregexp>]">>
In this example, I'm using groups and a quantifier, since the first match
gets repeated twice. You can expand that out if it's easier to scan.
-- Mark
On Saturday, July 14, 2018 at 7:31:52 PM UTC-7, TonyM wrote:
>
> Josiah,
>
> I am glad for your help, and marks - I need to jump into regex soon, but
> it seems to require a lot of rote learning - perhaps I can make a wiki for
> that?
>
> In the case in question the three words can only be a-zA-Z
>
> What would I replace \w with for this outcome?
>
> Thank
> Tony
>
> On Sunday, July 15, 2018 at 10:40:20 AM UTC+10, @TiddlyTweeter wrote:
>>
>> Ciao TonyM & Mark S.
>>
>> Really interesting work.
>>
>> A few small non-consequential notes on the regex ... This is just for
>> interest.
>>
>> Marks' ...
>>
>> ^\w+?\.\w+?\.\w+?$
>>
>> is perfectly serviceable. But it will work simpler too ...
>>
>> ^\w+\.\w+\.\w+$
>>
>> ... The qualifying "?" that is to prevent "greedy" matches is not needed.
>> A greedy match here is fine.
>>
>> One issue is that \w is shorthand for the JS character class ...
>>
>> [a-zA-Z0-9_]
>>
>> This means IF you used, for instance, any accented character it would
>> break.
>>
>> A way round this would be to add the accented characters to an explicit
>> class. But every one would need explicitly adding. Easier would be to use ,
>> instead of \w, a negative character class like [^\.] = its not a full-stop.
>>
>> The only problem with regex character classes in TW is they get a bit
>> baroque to use as they need square brackets so you can't do them directly
>> -- https://tiddlywiki.com/#regexp%20Operator
>>
>> Just thoughts
>>
>
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