Re: Can't have both " and ' in an XPath lite

Thanks for answering Ken, but ...

On 22 Apr, G. Ken Holman wrote:
...
>      <xsl:for-each select="e[@att=concat(&quot;a'&quot;,'&quot;b')]">
...
Nice workaround for the my example. But as I wrote, that example is not
the real problem. I provided it only to illustrate the underlying
problem, I see with the XPath syntax.

The question (or problem) is not (only) an XSLT one, but more an XPath
problem.

Imagine a script language (in fact, that's the real scenario), which
got a DOM tree and is able to execute XPath expressions on that
tree. Now, the programmer want to select the elements with an
attribute x with an attribute value given by outside (say: user
input).

If you want to programmatically create the needed XPath expr
(simplified something like: e[@x='<that random value comming from
elsewhere, you've no control over>'])

then the question arises how to
escape the XPath literal delimiter character in that string.

<xsl:variable name="val">that random value comming from
elsewhere, you've no control over (except for escaping the
embedded markup charactes)</xsl:variable>

There is no way to escape the XPath literal delimiter character
within a literal with the XPath syntax rules, as you confirm. OK, in
the scribbled case, the programmer could write a complex parsing rule,
to rewrite the wanted expression along the line you showed, but that
is, to word tempered, tedious.

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