Regex is very powerful and often confusing :-)
For instance ...
*^(([^/]*?)/){1,}[^/]*?$*
Is actually, functionally, the same as the very simple ...
*/*
Test these at:
http://tw-regexp.tiddlyspot.com/#RegExp%20Experimentation%20with%20Title
The point is whether to have a more complex regex that can do a lot that is
precise in changing via *{1,} *or simply match the immediate need that a
Tiddler needs contain a "/" slash.
Its a pragmatic tool.
TT
On Friday, 6 September 2019 11:38:24 UTC+2, @TiddlyTweeter wrote:
>
> Mohammad wrote:
>>
>> Does this pattern allows trailing slashes?
>>
>
> No. To do that you could use ...
>
> *^(([^/]*?)/){1,}[^/]*?$*
> This makes the negation classes "[^/]*?" matching "not /" of 0 or more
> length (rather than 1 or more)
> This will match tiddlers ending "/", as well as cases where the title
> could just be "///"
>
> By the way, if you want to see all titles with "/" use {1,} = 1 or more
>
> ---
>
> But to match that use case only, where you only wanted to list tiddlers
> with a trailing "/" use this simple pattern :-) ...
>
> */$*
>
> Part of the art with regex is determining when to be minimal and when to
> go for something with wider matching power but more complexity.
> The more complex it gets the more important it gets to test against data
> to be sure it works as expected.
>
> TT
>
>
>>
>>
>> *Advanced use of the Negated Character Class*
>>>
>>> *Match titles with defined numbers of "/" slash*
>>> *^(([^/]+?)/){1}[^/]+?$*
>>>
>>> The difference here is in *{1}*
>>>
>>> If you change the number then it will change the number of "/" permitted
>>> in the match.
>>>
>>> You can test it at:
>>> http://tw-regexp.tiddlyspot.com/#RegExp%20Experimentation%20with%20Title
>>>
>>>
>>
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