Adjustment to spaceBeforeSlash to add a spaceBeforeSlash only if the tag has attributes?

[jasonkhanlar]

Is your feature request related to a problem? Please describe. Adjustment to spaceBeforeSlash to add a spaceBeforeSlash only if the tag has attributes

Describe the solution you'd like

<namespace key="0" case="first-letter" /> // space before slash here (okay)
<text bytes="0" sha1="phoiac9h4m842xq45sp7s6u21eteeq1" xml:space="preserve" /> // space before slash here (okay)
<minor/> // do not add a space before slash here (not possible yet)

Describe alternatives you've considered I can write my own post processing code to handle this, but I thought I'd mention it as a feature suggestion also.

Additional context

• Asking in MediaWiki Discord server why in Wikipedia/MediaWiki XML exports, some tags have spaces before slash, and some don't, consensus was: "space before slash if the tag has attributes, otherwise no space"
  • I can't find any additional context to cite sources to further explain why I got this response, but I'm looking for further information. Actually, let me dig through the MediaWiki source code.
  • https://github.com/wikimedia/mediawiki/blob/master/includes/export/XmlDumpWriter.php#L373
  • https://github.com/wikimedia/mediawiki/blob/master/includes/export/XmlDumpWriter.php#L402
• Not quite relevant, but https://github.com/prettier/prettier/issues/1985
  • https://stackoverflow.com/questions/462741/space-before-closing-slash
  • https://w3.org/TR/xhtml1/#guidelines
    • Note that this is compatibility for HTML, and not necessary otherwise
    • C.2. Empty Elements: "Include a space before the trailing / and > of empty elements, e.g. <br />, <hr /> and <img src="karen.jpg" alt="Karen" />. Also, use the minimized tag syntax for empty elements, e.g. <br />, as the alternative syntax <br></br> allowed by XML gives uncertain results in many existing user agents."
• Also "https://github.com/prettier/plugin-xml/issues/11 might be illustrative of why it's futile to ask people to change their software for your absurd requirement"

[jasonkhanlar]

Note that rather than this ""feature"" idea being built in to the library, I whipped up this code to match what appears to be hard-coded inconsistency in MediaWiki Special:Export XML dumps (and as far as this point in time, I haven't found any further inconsistency than these two instances: "minor/sha1" tags):

xmlbuilder2.convert(
  { keepEntityCharRefs: true },
  xmlobj,
  { format: 'xml', prettyPrint: true, spaceBeforeSlash: true })
.replace(/<(minor|sha1) \/>/g, '<$1/>');