Thanks to everyone on this thread. My new button just got even fancier than 
I'd planned.

On Friday, October 9, 2015 at 1:05:58 PM UTC-4, brorgschlr85 wrote:
>
> I am trying to create a button with an accompanying edit-text widget that 
> will (a) create a new tiddler with the title entered in the edit-text 
> widget box, (b) edit the description field of the new tiddler as specified 
> below, (c) assign multiple tags to the new tiddler (as below), and (d) 
> append the current date to the title of the new tiddler.
>
> The following macro achieves objective (a) through (c):
>
> \define newentry()
>> \define tmp() {{$:/temp/newtitle}} <<now>>
>> <$button>
>> <$action-sendmessage $message="tm-new-tiddler" title={{$:/temp/newtitle}} 
>> description=<<now "ddd, mmm DD, YYYY - 0hh:0mm $(currentTiddler)$">> 
>> tags="BM GL [[Hello World]]"/>
>> New Entry:
>> </$button>
>> <$edit-text tiddler="$:/temp/newtitle" tag="input" default=""/>
>> \end  
>
>
> However, (d) is proving very difficult. I've tried passing a macro to the 
> title attribute of the action-sendmessage widget, but the result is the 
> literal string of the macro call, e.g.:
>
> \define newentry()
>> \define newtitlemacro() {{:/tempnewtitle}} <<now YY-MM-DD>>
>> \define tmp() {{$:/temp/newtitle}} <<now>>
>> <$button>
>> <$action-sendmessage $message="tm-new-tiddler" title=<<newtitlemaro>> 
>> description=<<now "ddd, mmm DD, YYYY - 0hh:0mm $(currentTiddler)$">> 
>> tags="BM GL [[Hello World]]"/>
>> New Entry:
>> </$button>
>> <$edit-text tiddler="$:/temp/newtitle" tag="input" default=""/>
>> \end  
>
>
> but the resulting button/text field creates a new macro entitled 
> "<<newtitlemacro>>"). As seen above, I'm able to pass macros to the 
> description attribute of the action-sendmessage widget, so I'm not sure why 
> the title attribute takes literal strings only.
>

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