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 hwva...@gmail.com 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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