[xsl] Re: can I *undefine* an attribute via xsl:attribute?

Subject: [xsl] Re: can I *undefine* an attribute via xsl:attribute?
From: "Piez, Wendell A. (Fed) wendell.piez@xxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 3 Aug 2020 13:53:09 -0000
Chris,

Maybe what you had mixed up is the difference between creating an attribute
and adding an attribute to the result tree.

Once you've added an attribute to the result tree, you can't remove it, or it
wouldn't be the result tree. You can certainly add an attribute to a temporary
tree, then copy that attribute (or not), to the result tree. There are a
number of ways that can be accomplished.

Cheers, Wendell

From: Chris Papademetrious christopher.papademetrious@xxxxxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Saturday, August 1, 2020 11:04 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: [xsl] can I *undefine* an attribute via xsl:attribute?

Hi all,

I would like to call a template that creates various attributes, then
conditionally *undefine* certain attributes, using some **MAGIC** below:

<xsl:template name="create-my-attributes>
  <xsl:call-template name="create-their-attributes"/>
  <xsl:attribute name="unwanted-attribute" select=**MAGIC**/>
</xsl:template>

A later xsl:attribute definition overrides an earlier value. But can I somehow
define an attribute as "undefined" to uncreate it? The spec at

https://www.w3.org/TR/xslt-30/#creating-attributes<https://gcc02.safelinks.pr
otection.outlook.com/?url=https%3A%2F%2Fwww.w3.org%2FTR%2Fxslt-30%2F%23creati
ng-attributes&data=02%7C01%7Cwendell.piez%40nist.gov%7C28cc03313d8749dbe46908
d8362c1b47%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C637318910352971473&sd
ata=3XurZqUO7B%2Fuduc4MP4eD%2Bi5bhxoJCa5CkF3MT9diEU%3D&reserved=0>

doesn't mention this as an option, but I'm a novice and perhaps I missed
something.

Thanks!

-----
Chris Papademetrious
Tech Writer, Implementation Group
(610) 628-9718 home office
(570) 460-6078 cell

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