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Clarify SGML vs SGML (ENR+WWW) difference with "/>" #42

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zcorpan opened this issue Sep 9, 2021 · 0 comments

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zcorpan commented Sep 9, 2021

https://htmlparser.info/introduction/#sgml--early-html

As an interesting aside, when using the XML "/>" syntax in HTML, according to SGML rules it would trigger the SHORTTAG feature. When used on a void element, the slash just marks the end of the start tag, and the ">" is text content. Therefore, the following are equivalent:

<link rel="stylesheet" href="style.css" />
<link rel="stylesheet" href="style.css">>

See https://news.ycombinator.com/item?id=27312143

Just skimming through the intro chapter I already spotted inaccuracies regarding SGML. For example:

The following are equivalent: <link rel="stylesheet" href="style.css" /> [and] <link rel="stylesheet" href="style.css">>

No they're not. The author should study the 1998 WebSGML adaptations to ISO 8879 (the SGML spec), and in particular the NETENABL IMMEDNET feature.

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