@Eric Shulman Thank you for enlightening me!
at 1) A case of blindness: I missed the missing `>` at the end of `<<listtitle>, because the list title was always displayed. at 2) I defined the macros, because I hope that some day I can use transclusions with parameters and pass in 'Book', 'Article', 'Video', etc. But even then, as your code shows, I probably wouldn't need them. at 3) A misunderstanding: These are not double quotes, but two double single quotes to make the list title bold. at 4) A case of laziness: I only tested for zero and one cases, not for more than one. at 5) A case of ignorance: I'm not yet familiar with the finer details of the use of angle brackets within text and filters. Thanks for the clarification. Your corrected /simpilified code works as desired! Thanks again, -Reinhard On Tuesday, January 18, 2022 at 1:12:35 PM UTC+1 Eric Shulman wrote: > Here's your code that doesn't work: > ``` > \define listtitle() ''Books by $(currentTiddler)$'' > \define filter() "[tag[$(currentTiddler)$]tag[Book]]" > > <$list filter=<<filter>> variable="_"> <<listtitle> </$list> > > <<list-links filter:"[tag[$(currentTiddler)$]tag[Book]]">> > ``` > > Here's what's wrong: > 1) There is a missing `>` at the end of `<<listtitle>`. As a result, the > macro call isn't closed until the final `>>` at the end of the code. All > the content between the error and the ending `>>` are treated as parameters > to the macro. > 2) The `$(variablename)$` syntax is only parsed when it occurs *within a > macro*. Thus, `"[tag[$(currentTiddler)$]tag[Book]"` is actually looking > for a literal tag value of `$(currentTiddler)$`. > 3) You don't need the double-quotes around the content of `\define > filter() "..."`. > 4) If there are multiple Book tiddlers for the current Author, your > `<$list>` widget (with the correction for the missing `>`) would display > the `<<listtitle>>` text multiple times, once for each matching Book > tiddler. > 5) You don't actually need to use `$(currentTiddler)$` anywhere in the > above code... `<<currentTiddler>>` (or `<currentTiddler>` within a filter) > is sufficient. In fact, you don't need to use any macros at all. > > Here's some corrected/simplified code: > ``` > <$list filter="[tag<currentTiddler>tag[Book]limit[1]]" > variable="_">''Books by <<currentTiddler>>''</$list> > > <<list-links filter:"[tag<currentTiddler>tag[Book]]">> > ``` > > Notes: > 1) The filter for the heading uses `limit[1]` so that the heading text is > only displayed once, regardless of how many matching Book tiddlers are > found. > > enjoy, > -e > On Tuesday, January 18, 2022 at 12:54:41 AM UTC-8 [email protected] > wrote: > >> In the attached TiddlyWiki I describe a strange issue with 'list-links'. >> I don't know if this is an error or I just missed something. >> > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/7920e3f6-4042-4872-bd4b-070bc9b6e4abn%40googlegroups.com.
