Removeprefix in the body of a link but not the link itself

#1

I’m having one of my periodic syntax brain-farts.

This properly links to the current tiddler in a table cell:

  <td><$link>{{!!title}}</$link></td>

But all the tiddlers in this table share a common prefix, which I’d like to remove. And I can’t seem to figure out the syntax. This removes the prefix:

  <td><$link>{{{ [{!!title}removeprefix[MyPrefix: ]] }}}</$link></td>

(Side question: is there a simpler version of this?)

But then the link is to the non-existent prefix-removed tiddler. That is, for a tiddler with the title MyPrefix: Some Title, the link is the same as the body, Some Title. The body is what I want, the link is not.

It’s not clear to me why this doesn’t fix it:

  <td><$link to=[{currentTiddler!!title}]>{{{ [{!!title}removeprefix[MyPrefix: ]] }}}</$link></td>

but it has the same behavior as the previous attempt.

I’m sure it’s much simpler than I’m making it, but I’m just not seeing it.

How should I go about this?

#2

{{{ [{!!title}removeprefix[MyPrefix: ]] }}} results in a link, and that is overriding “$link”.

<$text text={{{ [{!!title}removeprefix[MyPrefix: ]] }}}/> will result in plain text, and not override “$link”.

At TiddlyWiki.com, compare:

<$link to="HelloThere">{{{ [[HelloThere]search-replace[There],[]] }}}</$link>

<$link to="HelloThere"><$text text={{{ [[HelloThere]search-replace[There],[]] }}}/></$link>
#3

Yes, that’s it exactly. Thank you. I definitely should have seen that. That’s what I get for taking a week off doing TW development!

Thank you for your help!

#4

It does not much take to miss/overlook/forget what is going on between and as a result of them wee squiggly triplets.

Easy to get flustered by them, but then again, it is kind of fun in a brain-age game kind of way.

BTW, I’m not aware of a more concise way to go about it. I’m not sure a more concise way would so clearly indicate what’s going on.

1 Like
#5

This can be written more compactly as:

<$link to={{!!title}}><$text text={{{ [{!!title}trim[MyPrefix: ]] }}}/></$link>

Note that using the trim[] filter operator instead of removeprefix[] allows the link text to be displayed even if the current tiddler title doesn’t have the "MyPrefix: " leading text.

-e

#6

Thank you. trim is a very useful hint. I’m not sure when and why {currentTiddler} got in there. One of the results of flailing is that everything including the kitchen sink sometimes gets thrown in and not always removed when something finally works.

#7

Oh, never mind. It’s actually the variable <curr> in my actual code, only “simplified” for the post.