Spot on!
The triple quotes, which I came across, but did not understand. And which I
did not try before.
-hw
On Wednesday, March 3, 2021 at 12:27:24 AM UTC+1 Hylke W. van Dijk wrote:
> Thanks Mat,
>
> ad 1
> Escaping the regexp might be a solution. But how? I mean in a regular
> expression [a-z] is different from \[a-z\].
> Unsure how to escape the regular expression. It might be a greediness /
> look-ahead problem.
>
> ad 2
> No luck here, tried it. If I remember correctly <<__x__>> sort of casts
> the variable into a tiddly. That might be part of the explanation.
>
> ad 3
> Sorry, typo in this mail.
>
> Cheers,
> Hylke
>
>
>
>
>
>
> On Tuesday, March 2, 2021 at 11:58:52 PM UTC+1 Mat wrote:
>
>> WOW! To say the least. (And incidentally I'm working on a distantly
>> related thing).
>>
>> Regarding your problems here are some first guesses:
>>
>> >regexp="([A-Z]+(?=[0-9]+))|([0-9]+(?=[A-Z]+))"
>> >and filter="[<ref>splitregexp<regexp>reverse[]]"
>>
>> Maybe you need to escape the square brackets?
>>
>> ><<mymacro one/2/three>> fails. I
>>
>> See if enclosing the argument with "..." helps
>>
>> ><$set filter:"filter" variable="var"> and <$vars var={{{ filter }}}>
>> give dif
>>
>> Again some syntactic tidbits (but maybe you just mistyped in this post):
>>
>> <$set filter*=*"filter" name="var">
>>
>>
>> <:-)
>>
>>
>>
>> On Tuesday, March 2, 2021 at 10:18:33 PM UTC+1 [email protected] wrote:
>>
>>> Good day,
>>>
>>> Triggered by the announcement of Tamasha I decided to dig into TW5 some
>>> more. Therefore I created a --javascript free -- plugin for easy import and
>>> display of spreadsheet data, or more generally dataframes. Along the way I
>>> ran into some subtleties / miscomprehensions of the tiddlywiki framework ,
>>> which might be of interest to others. A demonstration of the dataframe
>>> plugin and a working description of three subtleties in action is
>>> available at: https://hwvandijk.bitbucket.io/tw-dataframe/
>>>
>>> 1. splitregexp that crashes the Javascript engine of Firefox 58, but
>>> works on tiddlydesktop 0.14 (chromedriver 81)
>>> I used a (elaborate) regular expression in splitregexp to split "ABC123"
>>> in to "123 ABC" in one go.
>>> i.e.
>>> regexp="([A-Z]+(?=[0-9]+))|([0-9]+(?=[A-Z]+))"
>>> and filter="[<ref>splitregexp<regexp>reverse[]]"
>>>
>>> I get a Javascript error: *uncaught exception: Linked List only accepts
>>> string values, not undefined *
>>> The problem has been solved by using a more straightforward regular
>>> expression in a search-replace:regexp filter operator.
>>>
>>> 2. $x$ and <<__x__>> or similar but not identical
>>> I had problems using macro parameters in filters. Therefor I cast them
>>> in a <$set> or <$vars> variable, either through $x$ or <<__x__>>. The
>>> former works fine unless a parameter x that is passed to the macro contains
>>> slashes.
>>> <<mymacro one.2.three> works fine, <<mymacro one/2/three>> fails. It
>>> renders the <$vars expression> literally in the page.
>>>
>>> 3. <$set filter:"filter" variable="var"> and <$vars var={{{ filter }}}>
>>> give different results
>>> To specify the index/columns of the dataframe to be displayed I use a
>>> list of ranges. Meaning that a spec of "1,3-5,7" should be transformed into
>>> "1,1 3,5 7,7" such that when you feed these entries one by one into the
>>> range operator you get [1 2 3 4 5 7].
>>> However with:
>>>
>>> <$vars p=<<__param__>>
>>> regexp="^(\d+)$" >
>>> <$set name="setref"
>>> filter="[<p>split[,]search-replace:g:regexp<regexp>,[$1,$1]]" >
>>> <$vars varsref={{{ [<p>split[,]search-replace:g:regexp<regexp>,[$1,$1]]
>>> }}} >
>>>
>>> The variables *setref* and *varsref* are not identical. *varsref* is
>>> wrong, you should use *setref*.
>>> varsref only works for simple specifications, such as "7". It looks like
>>> *varsref
>>> *does not obey the g (global) specifier.
>>>
>>> Sorry for the long mail, but hopefully someone can point out my
>>> misconceptions or file a bug if that is appropriate.
>>>
>>> Cheers,
>>>
>>> Hylke van Dijk
>>>
>>>
>>>
>>>
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