JATS Reader: handle space-separated rid attribute

[hubgit]

When parsing an xref element with ref-type equal to bibr (i.e. an inline citation), the value of the rid attribute should be treated as a space-separated list of ids.

This is to allow citation of multiple references at the same location, equivalent to the syntax [@ref1; @ref2; @ref3; @ref4; @ref5] in Markdown, e.g. <xref ref-type="bibr" rid="ref1 ref2 ref3 ref4 ref5"/>.

pandoc/src/Text/Pandoc/Readers/JATS.hs

Lines 470 to 482 in b6c64bd

	"xref" -> do
	ils <- innerInlines
	let rid = attrValue "rid" e
	let refType = ("ref-type",) <$> maybeAttrValue "ref-type" e
	let attr = (attrValue "id" e, [], maybeToList refType)
	return $ if refType == Just ("ref-type","bibr")
	then cite [Citation{
	citationId = rid
	, citationPrefix = []
	, citationSuffix = []
	, citationMode = NormalCitation
	, citationNoteNum = 0
	, citationHash = 0}] ils

According to the JATS documentation, the rid attribute contains one or more identifiers on any of the following elements:

<aff>, <author-notes>, <award-group>, <award-id>, <bio>, <contrib>, <def>, <funding-source>, <funding-statement>, <named-content>, <sig>, <sig-block>, <term>, <xref>