[Bug] tm-new-tiddler message creates tags field even if it is empty. -- It should not

[pmario]

tm-new-tiddler message does create an empty tags: field, if there is no value set to: $:/config/NewTiddler/Tags

To reproduce

• Click the NewTiddler button at tw-com
• Save the new tiddler
• Open Tiddler (i)nfo area -> Fields tab

Expected behaviour: If there is no tag defined, there should be no tags-field

It is not a "doomsday" problem, but it is problem with Testcase Tiddlers, that contain buttons, that create a new tiddler using that message. Eg: (simplified testcase)

• Use the following code with a testcase-tiddler with https://tiddlywiki.com/prerelease/
• title: test-new-tiddler-button
• tag: $:/tags/wiki-test-spec
• type: text/vnd.tiddlywiki-multiple

title: Narrative

This code tests action-sendmessage with tm-new-tiddler

+
title: Output

<$button>
<$action-sendmessage $message="tm-new-tiddler" />
Create a new tiddler
</$button>

Problem: I did not specify an additional parameter, but the tags field is still there. That was very confusing with my real testcase, where I did create the docs for rewritten toc-macros.

The tags field was there, but the code should have only created tagLike -- So I started to investigate Just to find out the that's the default behaviour for TW tm-new-tiddler message. -- time wasted.

Proposal

I would like to remove that redundant field, if it is empty. I think the change should be backwards compatible and it will save other developers some time once they start using the Testcase compound tiddlers.