[Xsltforms-support] transform() function in 595

[C. M. Sperberg-M. <cm...@bl...>]

A project I'm involved with is running into problems with Chrome 34; I was glad
to see that there is already a workaround for them, so I have checked out
version 595 and am testing it.  I have run into a problem.

The form I am testing uses the transform() function to display nicely formatted
read-only versions of some complex information.  Under 1.0RC it works as
intended (except in Chrome 34 -- but that's where this story started, isn't it?). 
Under 595, when the user loads a document, I get a long series (one per
item in a repeat) of error alerts reading:

  http://localhost
  XSLTForms Exception
  ----------------
  Error evaluating the following XPath expression:
  transform(., 'display-segments-aligned.xsl')
  transform() : Invalid number of arguments
  transform() function must have two arguments exactly

The cause appears to be that the error message transformInvalidArgumentsNumber
has not changed, but at some point the argument-checking in the transform
function changed from 

  if (arguments.length !== 2) {
     throw XsltForms_xpathFunctionExceptions.transformInvalidArgumentsNumber;
  }

to

  if (arguments.length < 3) {
     throw XsltForms_xpathFunctionExceptions.transformInvalidArgumentsNumber;
  }

It's easy enough to add a third argument to my calls to transform() -- if I have
understood correctly, it should be 'false' -- or to supply false as the default.

Question 1:  am I right that the third argument should be 'false'
for external stylesheets, and 'true' for strings containing an XSLT stylesheet?

Question 2:  What are arguments 4 and following for?  They appear to be
for stylesheet parameters (which would really make me happy); is that true?

Question 3:  Is this documented somewhere?  (One of the reasons I like
XForms is that I don't want to have to learn to read Javascript really fluently.)

-- 
****************************************************************
* C. M. Sperberg-McQueen, Black Mesa Technologies LLC
* http://www.blackmesatech.com 
* http://cmsmcq.com/mib                 
* http://balisage.net
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