XSLT match patterns on pinned maps and arrays

[michaelhkay]

Given that <xsl:apply-templates select="pin(.)??course?code"/> will select items that are labeled with their position in the containing tree of maps and arrays, it should be possible to match the selected items with a match pattern of the form

match="?course?code"

that operates in a similar way to patterns such as course/code in XML.

Perhaps the pinning of the map should be done automatically by the xsl:apply-templates instruction.

[michaelhkay]

Superseded by issue #1776