Re: [xsl] Debugging (was: template matching on text value of a parent...

with the benefit of hindsight do case insensitive matches if case is not
material.

prevention is better than cure.


On Fri, Aug 15, 2014 at 9:57 AM, Michael Kay mike(_at_)saxonica(_dot_)com <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:

> This raises the question, how should one approach the debugging of such
> problems, other than by staring at the code until you see the light.
>
> It's common enough and we've all experienced it: you write a complex
> expression that looks right, and it returns nothing, and you have no clue
> why.
>
> I'd suggest the following strategy:
>
> 1. Add something like
>
> <debug><xsl:copy-of select="X"/></debug>
>
> where X is the offending expression
>
> 2. If <debug/> comes out empty, successively remove predicates and axis
> steps from X starting at the right-hand end, until you get some output.
>
> 3. When you get some output, the last step you removed was the one that
> was wrong.
>
>
> Michael Kay
> Saxonica
> mike(_at_)saxonica(_dot_)com
> +44 (0) 118 946 5893
>
>
>
>
> On 14 Aug 2014, at 23:28, Ihe Onwuka ihe(_dot_)onwuka(_at_)gmail(_dot_)com <
> xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
>
> Lord.... even after staring at the shorter version  multiple times I did
> not see it. It's obviously been a long long day and I should have walked
> away from this ages ago.
>
>
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