Thanks, Jeremy, but I'm still not clear on how to use this. For newbs, 
i.e., me, what complete line (or lines) would you add to the top of a 
tiddler to display an error message if a particular macro is undefined, and 
do nothing if it does exist?

My use case is to add this to a tiddler where I am using a non-core macro, 
which is defined in another tiddler, to alert me if the macro is ever 
deleted/uninstalled.

David.

On Tuesday, 26 February 2019 06:25:58 UTC+9:30, Jeremy Ruston wrote:
>
> Hi David
>
> Try:
>
> [[VAR_NAME]] +[is[variable]addsuffix[ is a variable]] ~[[Undefined 
> variable or macro 'VAR_NAME']]
>
> [[currentTiddler]] +[is[variable]addsuffix[ is a variable]] ~[[Undefined 
> variable or macro ‘currentTiddler']]
>
> You can try out these examples in the “filter” tab of advanced search in 
> the prerelease:
>
> https://tiddlywiki.com/prerelease/#%24%3A%2FAdvancedSearch 
> <https://tiddlywiki.com/prerelease/#$:/AdvancedSearch>
>
> Best wishes
>
> Jeremy.
>

-- 
You received this message because you are subscribed to the Google Groups 
"TiddlyWiki" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/tiddlywiki.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/tiddlywiki/615e94d7-7f98-470d-8411-0ec123666bf2%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Reply via email to