d441e656db
Thus, a span with attribute 'foo' gets written to HTML5 with 'data-foo', so it is valid HTML5. HTML4 is not affected. This will allow us to use custom attributes in pandoc without producing invalid HTML.
16 lines
244 B
HTML
16 lines
244 B
HTML
Custom attributes should automatically have data- added
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in HTML5:
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```
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% pandoc -t html5
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[hello]{foo="bar"}
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^D
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<span data-foo="bar">hello</span>
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```
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but not in HTML4:
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```
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% pandoc -t html4
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[hello]{foo="bar"}
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^D
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<span foo="bar">hello</span>
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```
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