Hi Tobias,

> So long as (part of?) a macro parameter is declared via double square 
brackets, that may be achieved.

How so? While it's possible to use double square brackets to delimit a 
macro parameter, these are merely an alternative for quotes. They have no 
link semantics.

For example, given `\define emphasis(_) //$_$//`, the call `<<emphasis 
[[Target Tiddler]]>>` returns `//Target Tiddler//` rather than any kind of 
link to Target Tiddler.

I believe a macro parameter is *always* a mere string of characters, no 
matter how it's passed. Even if you use the $macrocall widget,

  <$macrocall $name=emphasis _="[[Target Tiddler]]"/>

the parameter remains a string, in this case `[[Target Tiddler]]`.

The issue is that macros are dynamic, so they're not really suitable 
candidates for the rapid indexing relied on by things like [backlinks[]] 
and [all[orphans]].

I wonder if the message "No tiddlers link to this one" on the References 
tab ought to say "No tiddlers contain static links to this one"?

– æ

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