6d30d3e · typeable/pandoc

git.iko.soy/typeable/pandoc

Pass through aria- attributes to HTML5.

Also document addition of data- prefix to unknown attributes. Closes #5646.

commit6d30d3e0b3b4a7005018179ff1098dd16eeb2652 authorJohn MacFarlane <jgm@berkeley.edu> dateFri 12 Jul 2019, 17:03 (7 years ago) parentc497d79

3 files changed+14−4

unifiedsplit

MANUAL.txt+5−4

@@ -3967,10 +3967,11 @@ Attributes can be set on links and images:

39673967(This syntax is compatible with [PHP Markdown Extra] when only `#id`

39683968and `.class` are used.)

39693969

3970−For HTML and EPUB, all attributes except `width` and `height` (but

3971−including `srcset` and `sizes`) are passed through as is. The other

3972−writers ignore attributes that are not supported by their output

3973−format.

3970+For HTML and EPUB, all known HTML5 attributes except `width` and

3971+`height` (but including `srcset` and `sizes`) are passed through

3972+as is. Unknown attributes are passed through as custom

3973+attributes, with `data-` prepended. The other writers ignore

3974+attributes that are not specifically supported by their output format.

39743975

39753976The `width` and `height` attributes on images are treated specially. When

39763977used without a unit, the unit is assumed to be pixels. However, any of

src/Text/Pandoc/Writers/HTML.hs+1

@@ -621,6 +621,7 @@ toAttrs kvs = do

621621 if x `Set.member` (html5Attributes <> rdfaAttributes)

622622 || ':' `elem` x -- e.g. epub: namespace

623623 || "data-" `isPrefixOf` x

624+ || "aria-" `isPrefixOf` x

624625 then Just $ customAttribute (fromString x) (toValue y)

625626 else Just $ customAttribute (fromString ("data-" ++ x))

626627 (toValue y)

test/command/5646.mdnew file+8

@@ -0,0 +1,8 @@

1+```

2+% pandoc -t html5 -f markdown

3+![test](foo){aria-describedby="barbaz"}

4+^D

5+<figure>

6+<img src="foo" aria-describedby="barbaz" alt="" /><figcaption>test</figcaption>

7+</figure>

8+```