On Sep 30, 2022, at 12:38 AM, Darren Duncan <dar...@darrenduncan.net> wrote: > > Modern HTML must follow all the XML rules, which is that tags in pairs look > like "<foo></foo>" and standalone tags look like "<foo/>". Whether or not > there is whitespace before a "/" is a stylistic choice, but the "/" MUST be > present in standalone tags. Having "<br>" by itself is wrong, full stop. -- > Darren Duncan
According to the HTML5 standard at WHATWG, https://html.spec.whatwg.org/ <https://html.spec.whatwg.org/>, dated 28 September 2022, in Section 1.8, HTML vs XML syntax (non-normative): > There are various concrete syntaxes that can be used to transmit resources > that use this abstract language, two of which are defined in this > specification. > > The first such concrete syntax is the HTML syntax. This is the format > suggested for most authors. It is compatible with most legacy web browsers. > If a document is transmitted with the text/html > <https://html.spec.whatwg.org/multipage/iana.html#text/html> MIME type > <https://mimesniff.spec.whatwg.org/#mime-type>, then it will be processed as > an HTML document by web browsers. This specification defines the latest HTML > syntax, known simply as "HTML". > > The second concrete syntax is XML. When a document is transmitted with an XML > MIME type <https://mimesniff.spec.whatwg.org/#xml-mime-type>, such as > application/xhtml+xml > <https://html.spec.whatwg.org/multipage/iana.html#application/xhtml+xml>, > then it is treated as an XML document by web browsers, to be parsed by an XML > processor. Authors are reminded that the processing for XML and HTML differs; > in particular, even minor syntax errors will prevent a document labeled as > XML from being rendered fully, whereas they would be ignored in the HTML > syntax. > See also my previous reply to Omar KN, quoting from the same standard to the effect that the terminal slash in void element tags is optional. I believe that the only HTML version that required consistency with XML syntax was XHTML, which is scarcely a modern HTML at this point. Regards, Neil Faiman -- This is the BBEdit Talk public discussion group. If you have a feature request or need technical support, please email "supp...@barebones.com" rather than posting here. Follow @bbedit on Twitter: <https://twitter.com/bbedit> --- You received this message because you are subscribed to the Google Groups "BBEdit Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to bbedit+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/bbedit/4B1A281D-0C73-4FD3-832D-267B76800C29%40faiman.org.
