Try
<xsl:template match="block[string-length(normalize-space(.))=1]">
before you dive in to trying to actually add up the lengths of the
<inline>s.
Great, many thanks, that's exactly what I meant.
However, on trying it out, I found that any newlines and
indentation within my <block> element contribute to the
string_length, so that my <block> is no longer 1 character long
when they are present.
So I would like to ask again, but this time: how to match any
<block> in which the sum of the lengths of the child <inline>
elements is 1 character? (My newlines and indentation will be
outside any <inline> element, but all the "content" is inside
<inline> elements.) Do I need to program a loop somehow, or is
there a handy function?
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