[TW5] Simple question - Syntax for concatenating texts and tiddler contents

[Matthew Petty]

I have a temp tiddler that contains the current episode number of my little personal podcast: $:/temp/current_podcast_episode
I want to have links to the various parts I need to write, like the intro, outro, etc.
I have these macros:

\define join2(1, 2)
$1$$2$
\end

\define join3(1, 2, 3)
$1$$2$$3$
\end

\define join4(1, 2, 3, 4)
$1$$2$$3$$4$
\end

But I can't seem to figure out how to make the following work:

<$link><<join3 "Podcast Episode " {{$:/temp/current_podcast_episode}} " Intro">></$link>

It shows the correct text ("Podcast Episode 19 Intro"), but the link itself is just to the current tiddler.

This also doesn't work:

<$link to=<<join3 "Podcast Episode " {{$:/temp/current_podcast_episode}} " Intro">> ><<join3 "Podcast Episode " {{$:/temp/current_podcast_episode}} " Intro">></$link>

It has the link as "Podcast Episode {{$:/temp/current_podcast_episode}} Intro"

What am I doing wrong?

[Jed Carty]

this has has how to do it and some explanation. http://inmysocks.tiddlyspot.com/#Concatenating%20text%20to%20make%20dynamic%20URLs