Thanks for clarification! --Mohammad
On Tuesday, February 26, 2019 at 3:38:07 PM UTC+3:30, Jeremy Ruston wrote: > > Hi Mohammad > > The reason that we don’t use the “[<macro>]” formulation here is because > we don’t want to retrieve the value of the macro, we want to get its name > as a string. > > Best wishes > > Jeremy > > On 26 Feb 2019, at 11:57, Mohammad <[email protected] <javascript:>> > wrote: > > Hello again Jeremy, > > Look at below code > > \define macro(VAR_NAME) > test > \end > > <$list filter="[[macro]] +[is[variable]addsuffix[ is a variable]] > ~[[Undefined variable or macro 'VAR_NAME']]"> > <<currentTiddler>> > </$list> > > > Why the syntax needs variable like Tiddler title, I expect to have macro > or variable as below > > > <$list filter="[<macro>] +[is[variable]addsuffix[ is a variable]] > ~[[Undefined variable or macro 'VAR_NAME']]"> > <<currentTiddler>> > </$list> > > I mean, using angle bracket. > > --Mohammad > > On Tuesday, February 26, 2019 at 12:25:58 AM UTC+3:30, 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/#$:/AdvancedSearch> >> >> Best wishes >> >> Jeremy. >> >> On 25 Feb 2019, at 20:49, David Nebauer <[email protected]> wrote: >> >> Thanks, Jeremy. For future reference, would you mind showing how that >> subfilter could be used to test for the existence of a particular variable >> or macro, say 'VAR_NAME', and display the text "Undefined variable or macro >> 'VAR_NAME'" if it is not found. >> >> -David >> >> On Monday, 25 February 2019 22:39:23 UTC+9:30, Jeremy Ruston wrote: >>> >>> Hi David >>> >>> I think you’re right: there is no way to test for the existence of a >>> variable whose value is blank. I’ve added an [is[variable]] subfilter >>> operator for v5.1.20 to address this: >>> >>> >>> https://github.com/Jermolene/TiddlyWiki5/commit/36e76429b1a1d4638374d513430393db5693b932 >>> >>> Best wishes >>> >>> Jeremy. >>> >>> >>> On 25 Feb 2019, at 12:34, David Nebauer <[email protected]> wrote: >>> >>> As I understand it, if you attempt to call an undefined macro the call >>> fails silently, with nothing displaying in the tiddler to alert users. This >>> occurs regardless of the calling method, i.e., >>> >>> <<not-a-real-macro>> >>> or >>> <$macrocall $name="not-a-real-macro"/> >>> >>> *Is there a technique for checking whether a macro is defined, and >>> displaying a message in the tiddler if the macro is not defined?* >>> >>> Ideally, the test would not just check for *output* from the macro, >>> since there might be valid circumstances where a macro produces no output. >>> >>> -David >>> >>> -- >>> 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 tiddlywiki+...@googlegroups. <http://googlegroups.com/>com >>> <http://googlegroups.com/>. >>> 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/1ecc0c93-5932-41bb-9634-3eca9daf26c1%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/tiddlywiki/1ecc0c93-5932-41bb-9634-3eca9daf26c1%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >> -- >> 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/49d883c4-f2f7-434b-aaf7-5b1f0d21a29b%40googlegroups.com >> >> <https://groups.google.com/d/msgid/tiddlywiki/49d883c4-f2f7-434b-aaf7-5b1f0d21a29b%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> >> >> > -- > 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] <javascript:>. > To post to this group, send email to [email protected] > <javascript:>. > 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/6c5462a8-99ad-4133-86f3-199b3ac66737%40googlegroups.com > > <https://groups.google.com/d/msgid/tiddlywiki/6c5462a8-99ad-4133-86f3-199b3ac66737%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. 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