[Bug 27250] New: [XSLT30] xsl:number applies general streamability rules to a pattern with usage inspection

https://www.w3.org/Bugs/Public/show_bug.cgi?id=27250

            Bug ID: 27250
           Summary: [XSLT30] xsl:number applies general streamability
                    rules to a pattern with usage inspection
           Product: XPath / XQuery / XSLT
           Version: Last Call drafts
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XSLT 3.0
          Assignee: [hidden email]
          Reporter: [hidden email]
        QA Contact: [hidden email]

Under 19.8.4.30 Streamability of xsl:number, item 4, we say:

<quote>
4. The from and count patterns if present; these are higher-order operands with
usage inspection.
</quote>

But we do not have a notion of patterns in the context of higher order
operands, or in the context of inspection. We just have "classifying patterns"
that are either motionless or free-ranging.

A solution could be to say instead:

<proposal>
4. The from and count patterns, if present, must be motionless patterns, as
defined under 19.8.9 Classifying Patterns.
</proposal>

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https://www.w3.org/Bugs/Public/show_bug.cgi?id=27250

--- Comment #1 from Michael Kay <[hidden email]> ---
Noted that for-each-group has the same issue with its operand patterns, it uses
a similar form of words (The group-starting-with or group-ending-with patterns
if present; these are higher-order operands with usage inspection._

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