Using self-closing tags for widgets

[soren.b...@gmail.com]

Today I learned that I've been wrong about self-closing tags (e.g., <img />) in HTML5 for years. The new rules appear to be that they are allowed but meaningless on void elements (those that don't allow content), and entirely disallowed on any other elements.

Most TiddlyWiki widgets that don't have content use the self-closing syntax in the documentation (e.g., macrocall), and state that the content is "ignored". My question is, are these widgets defined like HTML5 void elements, so that they won't gobble up any body content if I don't close them? In that case, I would do best to simply stop using self-closing tags altogether, since they no longer have any meaning in modern HTML. Or would that potentially cause issues with the wikitext parser gobbling up other stuff as part of the "ignored" content, so that I should continue using the self-closing tags, but only for widgets?

[Jeremy Ruston]

Hi Soren

TW5 treats the following tags as void. This means that  no terminating </tag> is needed (indeed, if one is provided it will be ignored and treated as plain text), and the <tag/> syntax:

area,base,br,col,command,embed,hr,img,input,keygen,link,meta,param,source,track,wbr

If you don’t close any other tag then it will behave as if the missing closing tag were at the end of the tiddler.

I’ve updated the docs to add these details:

https://tiddlywiki.com/#HTML%20in%20WikiText

Best wishes

Jeremy

On 25 Nov 2020, at 00:57, soren.b...@gmail.com <soren.b...@gmail.com> wrote:

Today I learned that I've been wrong about self-closing tags (e.g., <img />) in HTML5 for years. The new rules appear to be that they are allowed but meaningless on void elements (those that don't allow content), and entirely disallowed on any other elements.

Most TiddlyWiki widgets that don't have content use the self-closing syntax in the documentation (e.g., macrocall), and state that the content is "ignored". My question is, are these widgets defined like HTML5 void elements, so that they won't gobble up any body content if I don't close them? In that case, I would do best to simply stop using self-closing tags altogether, since they no longer have any meaning in modern HTML. Or would that potentially cause issues with the wikitext parser gobbling up other stuff as part of the "ignored" content, so that I should continue using the self-closing tags, but only for widgets?

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[soren.b...@gmail.com]

Thanks Jeremy!