External Link using Tiddler Content

[Thomas Stone]

I am just wondering if a macro must use the HTML "a href" instead of the "[ext[" wikitext to use an external URL stored in a tiddler as the link destination in another tiddler.

1) Create a new tiddler

- Title = "TiddlyWiki Home Page"

- Content = "https://tiddlywiki.com/"

2) Create a global macro

- Title = "mcr OneLink"

- Tag = "$:/tags/Macro"

- Content =

```

\define OneLink(UrParentTag)

<a href={{$UrParentTag$}} target="_blank" rel="noopener noreferrer">$UrParentTag$</a>

\end

```

3) Call the macro, passing in the URL tiddler

```

<<OneLink "TiddlyWiki Home Page">>

```

I tried changing the macro definition to use "[ext[" wikitext, but I don't know whether the transclusion could work. The below code doesn't work.

```

[ext[$UrParentTag$ |{$UrParentTag$}]]

```

[Mat]

I think this should work (untested)

\define OneLink-inner() [ext[$(arg1)$|$(arg2)$}]]

\define OneLink(UrParentTag)
<$vars arg1="""$UrParentTag$""" arg2={{$UrParentTag$}}>
<<OneLink-inner>>
</$vars>
\end

<:-)

[Thomas Stone]

I got an extra "%7D" (url encoded close curly brace "}") on the end of the url that opens in the new tab.

[Thomas Stone]

So the first line need to not have that extra curly brace after $(arg2)$

```

\define OneLink-inner() [ext[$(arg1)$|$(arg2)$]]

```

That works now. Thanks for the code.

[Mark Kerrigan]

Here's another approach I've been using for quite awhile

https://groups.google.com/d/msg/tiddlywiki/e5kiYMbp3-Y/jPXqzPNHLHsJ