How about

preceding-sibling::processing-instruction() except
preceding-sibling::node()/preceding-sibling::processing-instruction()

?

Presumably this should get any PI that is immediately behind the context node,
but none that are not. (Untested.)

Cheers, Wendell

From: Eliot Kimber eliot.kimber@xxxxxxxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Monday, May 8, 2023 11:31 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re:  Is the first preceding-sibling a processing-instruction?

I interpreted the initial requirement as "If the first preceding sibling that
is not an empty text() node is a processing instruction, get that".

But the markup as shown as the starting point only has elements, PIs, and text
nodes, so for that content a simple
preceding-sibling::processing-instruction()[1] would give the right answer,
assuming there is always a PI before each element.

Cheers,

E.

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From: Graydon graydon@xxxxxxxxx<mailto:graydon@xxxxxxxxx>
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx<mailto:xsl-list-service@xxxxxxxxxxxx
rytech.com>>
Date: Monday, May 8, 2023 at 10:02 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx<mailto:xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
<xsl-list@xxxxxxxxxxxxxxxxxxxxxx<mailto:xsl-list@xxxxxxxxxxxxxxxxxxxxxx>>
Subject: Re:  Is the first preceding-sibling a processing-instruction?
[External Email]

On Mon, May 08, 2023 at 01:37:45PM -0000, Michael Kay
mike@xxxxxxxxxxxx<mailto:mike@xxxxxxxxxxxx> scripsit:
> But you could do
>
>
preceding-sibling::node()[not(self::text())][1][self::processing-instruction(
)]

I would use

preceding-sibling::processing-instruction()[1]

And I think it means "of my preceding siblings nodes which have node
type processing instruction, I want the one closest to me".

Have I got that wrong? Or is it only wanted if there's no intervening
node that's not a white space only text node?

--
Graydon Saunders | graydonish@xxxxxxxxx<mailto:graydonish@xxxxxxxxx>
^fs oferiode, pisses swa mfg.
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