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Fwd: Historical trivia: who introduced into XSLT 1.0 theconstr

  • From: Dimitre Novatchev <dnovatchev@gmail.com>
  • To: "xml-dev@lists.xml.org" <xml-dev@lists.xml.org>
  • Date: Sun, 12 Jun 2022 13:21:46 -0700

Fwd:  Historical trivia: who introduced into XSLT 1.0 theconstr


---------- Forwarded message ---------
From: Dimitre Novatchev <dnovatchev@gmail.com>
Date: Sun, Jun 12, 2022 at 12:25 PM
Subject: Re: Historical trivia: who introduced into XSLT 1.0 the construct that enables XSLT to generate XSLT (i.e., XSLT's "code generation" capability)?
To: Roger L Costello <costello@m...>


> The xsl:namespace-alias element is the construct that enables an XSLT program to generate an 
> XSLT program (i.e., it is the thing that gives XSLT its "code generation" capability).

Not true.

The following transformation generates an XSLT stylesheet, and this code doesn't contain any <xsl:namespace-alias> directives:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>

  <xsl:template match="/">
    <xsl:element name="xsl:stylesheet">
      <xsl:attribute name="version">1.0</xsl:attribute>
    </xsl:element>
  </xsl:template>
</xsl:stylesheet>

Thanks,
Dimitre


On Sun, Jun 12, 2022 at 11:34 AM Roger L Costello <costello@m...> wrote:
Hi Folks,

The xsl:namespace-alias element is the construct that enables an XSLT program to generate an XSLT program (i.e., it is the thing that gives XSLT its "code generation" capability).

Who introduced that construct into the XSLT 1.0 specification?

Was it Rick Jelliffe?

I believe Rick was the first person to utilize the construct in a major way. He used it in Schematron.

But no, it wasn't Rick.

So who was it?

Scroll down to see the answer ......















Rick told me the answer:

"James Clark put the alternative namespace into XSLT 1.0 specifically to allow XSLTs to generate XSLTs; he knew about this from DSSSL or Scheme"

/Roger

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--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
-------------------------------------
To avoid situations in which you might make mistakes may be the
biggest mistake of all
------------------------------------
Quality means doing it right when no one is looking.
-------------------------------------
You've achieved success in your field when you don't know whether what you're doing is work or play
-------------------------------------
To achieve the impossible dream, try going to sleep.
-------------------------------------
Facts do not cease to exist because they are ignored.
-------------------------------------
Typing monkeys will write all Shakespeare's works in 200yrs.Will they write all patents, too? :)
-------------------------------------
Sanity is madness put to good use.
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.
 


--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
-------------------------------------
To avoid situations in which you might make mistakes may be the
biggest mistake of all
------------------------------------
Quality means doing it right when no one is looking.
-------------------------------------
You've achieved success in your field when you don't know whether what you're doing is work or play
-------------------------------------
To achieve the impossible dream, try going to sleep.
-------------------------------------
Facts do not cease to exist because they are ignored.
-------------------------------------
Typing monkeys will write all Shakespeare's works in 200yrs.Will they write all patents, too? :)
-------------------------------------
Sanity is madness put to good use.
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.
 


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