Which tiddler is newer: What goes wrong here with Wikify

[Mohammad]

Create two tiddlers in tiddlywiki.com titled Aa and Bb

Now create a tiddler with below code inside it. This code compares the modified date of two tiddlers and shows yes

if Aa is newer than Bb and vice versa!

\define gt() 

$(TidA)$ $(TidB)$ +[nsort[]last[1]remove[$(TidB)$]]

\end

\define is-it-newer(TiddlerA, TiddlerB)

<$set name=TidA  tiddler=<<__TiddlerA__>> field="modified">

<$set name=TidB  tiddler=<<__TiddlerB__>> field="modified">

<$list filter=<<gt>> emptyMessage="no">

yes

</$list>

</$set>

</$set>

\end

> <<is-it-newer Aa Bb>>

> <$wikify text=<<is-it-newer Aa Bb>>  name=result>

<<result>>

</$wikify>

You will get different results

yes
no

Why the wikify shows the wrong result?

--Mohammad

[BurningTreeC]

I assume it wikifies the macrocall itself before the macros are "executed"/"rendered"

There's a difference between wikify text=<<macro>> and wikify text="<<macro>>"

[Jeremy Ruston]

Hi Mohammad

When I run your sample I get the same results for both (see below).

Best wishes

Jeremy

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[Mohammad]

Hi Jeremy,

 Have you created also the two tiddlers Aa and Bb?

I think if you have created these tiddlers you will see different results!

--Mohammad

[Mohammad]

Hi BTC,

 Thanks it works! but then if I further use the result I go into another trouble.

Now check this!

<$wikify text="""<<is-it-newer Aa Bb>>"""  name="result">

<<result>>

<$reveal type="match" text="yes" default=<<result>> >

Yes, Aa is newer

</$reveal>

<$reveal type="match" text="no" default=<<result>> >

No, Aa is older

</$reveal>

</$wikify>

No output! 

--Mohammad

[BurningTreeC]

Hi BTC,

 Thanks it works! but then if I further use the result I go into another trouble.

No check this!

<$wikify text="""<<is-it-newer Aa Bb>>"""  name="result">

<<result>>

<$reveal type="match" text="yes" default=<<result>> >

Yes, Aa is newer

</$reveal>

<$reveal type="match" text="no" default=<<result>> >

No, Aa is older

</$reveal>

</$wikify>

No output! 

does the <<result>> show something? if it does the problem may just be the reveal widget ... does it really work without a state tiddler?

[Mohammad]

Yes, result has a value: yes

Seems I cannot get any output from reveal widget!

I pasted the whole code here to be able to check in tiddlywiki.com!

\define gt() 

$(TidA)$ $(TidB)$ +[nsort[]last[1]remove[$(TidB)$]]

\end

\define is-it-newer(TiddlerA, TiddlerB)

<$set name=TidA  tiddler=<<__TiddlerA__>> field="modified">

<$set name=TidB  tiddler=<<__TiddlerB__>> field="modified">

<$list filter=<<gt>> emptyMessage="no">

yes

</$list>

</$set>

</$set>

\end

> <<is-it-newer Aa Bb>>

<$wikify text="""<<is-it-newer Aa Bb>>"""  name="result">

<<result>>

<$reveal type="match" text="yes" default=<<result>> >

Yes, Aa is newer

</$reveal>

<$reveal type="match" text="no" default=<<result>> >

No, Aa is older

</$reveal>

</$wikify>

[BurningTreeC]

:) cool! the reveal widget seems to work used like this, I didn't know that

the problem seems to be that your "yes" and "no" results contain whitespace... you can just put a \whitespace trim within the is-it-newer macro

[Mohammad Rahmani]

BTC,

 Thank you, now it works and reveal widget shows the correct output!

It is difficult to debug the TW scripts! Seem only experiences help here!

A million thanks

Cheers

Mohammad

Best wishes

Mohammad

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[Mohammad Rahmani]

Added to TW-Scripts.

Best wishes

Mohammad

On Thu, Mar 14, 2019 at 9:32 PM BurningTreeC <hypnotize...@gmail.com> wrote:

--

[BurningTreeC]

@Mohammad, 

using the wikify widget for this usecase seems to be useless, this can easily done without:

<$set name="tidBMod" value={{{ [[Bb]get[modified]] }}}>

<$set name="tidAMod" value={{{ [[Aa]get[modified]] }}}>

<$reveal type="match" text="yes" default={{{ [<tidAMod>] [<tidBMod>] +[nsort[]last[1]remove<tidBMod>addprefix[yes]removesuffix<tidAMod>] ~[[no]] }}}>

Yes, Aa is newer

</$reveal>

<$reveal type="match" text="no" default={{{ [<tidAMod>] [<tidBMod>] +[nsort[]last[1]remove<tidBMod>addprefix[yes]removesuffix<tidAMod>] ~[[no]] }}}>

No, Aa is older

</$reveal>

</$set>

</$set>

[BurningTreeC]

BTC,

 Thank you, now it works and reveal widget shows the correct output!

It is difficult to debug the TW scripts! Seem only experiences help here!

I must say you're also making it difficult by using the wikify widget

[Mohammad]

A smart solution!

Much shorter and semantic!

Thanks alot!

Added to TW-Scripts

--Mohammad

[BurningTreeC]

A smart solution!

Much shorter and semantic!

Thanks alot!

Added to TW-Scripts

What I want to say is that I think the wikify widget should never be the widget of choice if it can be done without

When I use it I try questioning if there's a reason why, if I know that it does something that's not possible or more difficult without it

[BurningTreeC]

A smart solution!

Much shorter and semantic!

It still can be shortified:

<$set name="tidBMod" value={{{ [[Bb]get[modified]] }}}>

<$set name="tidAMod" value={{{ [[Aa]get[modified]] }}}>

<$list filter="[<tidAMod>] [<tidBMod>] +[nsort[]last[1]removesuffix<tidAMod>]">

Yes, Aa is newer

</$list>

<$list filter="[<tidAMod>] [<tidBMod>] +[nsort[]last[1]removesuffix<tidBMod>]">

No, Aa is older

</$list>

</$set>

</$set>

[Mohammad]

That's true! In my case I use wikify widget when I have to use the result of a macro or want to store a variable.

I also use some general purpose macros and do not want to repeat the scripting!

--Mohammad

[Mohammad]

Yes, This is shorter and even better!

list widget can do amazing things! while reveal  may be semantic in this case!

--Mohammad