[TW5] concatenating title and textreference into a filter operand

[Tobias Beer]

Read below or first take a look at...

http://sections.tiddlyspot.com/#FailingChapterToc

Starting from tiddlers like...

• BookB
  
• BookB / ChapterC
  
• BookB / ChapterC / PageP

I am trying to display a list at the bottom of BookB

showing the "subtiddlers" based on BookB functioning as a prefix.

While that's easy to achieve using [prefix<<currentTiddler>>],

I am now trying to remove "BookB / " from BookB / ChapterC so as to

construct a link that reads [[ChapterC|BookB / ChapterC]]

To do that, I introduced $:/config/ChapterDelimiter and

specifyied " / " as the delimiter to then

concatenate the current tiddler as my prefix with it using $set, all in all...

<$list filter="[prefix<currentTiddler>sort[title]]-[<currentTiddler>]" variable="sub">
<$set variable="remove" value="<<currentTiddler>>{{$:/config/ChapterDelimiter}}">
<$list filter="[<sub>removeprefix<remove>]" variable="truncated">
<$link to=<<sub>>><<truncated>></$link><br>
</$set>
</$list>
</$list>

The problem is, I never reach the inner list, i.e. the remove variable just won't yield the desired filter.

The problem must lie in the variable as it all works if I do it with simple strings...

http://sections.tiddlyspot.com/#WorkingChapterToc

I also noticed that when I save my delimiter $:/config/ChapterDelimiter as " / " and then transclude it via...

{{$:/config/ChapterDelimiter}}

...then the leading <blank> is trimmed! This definitely appears to be a bug.

Best wishes, Tobias.

[Stephan Hradek]

Try this:

\define remover() $(currentTiddler)$$(delim)$

<$set name="delim" value={{$:/config/ChapterDelimiter}}>

<$list filter="[prefix<currentTiddler>sort[title]]-[<currentTiddler>]" variable="sub">
<$list filter="[<sub>removeprefix<remover>]" variable="truncated">

<$link to=<<sub>>><<truncated>></$link><br>

</$list>
</$list>

</$set>

[Tobias Beer]

Thanks Stephan, that worked perfectly :)

Will be thinking of using helper macros from now on for preprocessing vars.

Best wishes, Tobias.