Re: [xml] Re: Apparent XPath bug in libxml 2.2.7

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From: Daniel Veillard (Daniel.Veillard@w3.org)
Date: Mon Nov 13 2000 - 05:46:21 EST

On Sun, Nov 12, 2000 at 06:17:02PM -0800, David Moore wrote:
> The other day I sent a message regarding a bug in libxml's 2.2.7 xpath
> support in regards to evaluating relative paths.

  Right,

> I think I've found the source of the bug. In 2.2.6, the following code
> appeared in xmlXPathEval() just before xmlXPathEvalExpr() gets called:
>
> if (ctx->node != NULL) {
> init = xmlXPathNewNodeSet(ctx->node);
> valuePush(ctxt, init);
> }

  Humm, exact, I cleaned up this part but obviously went a bit too far :-)

> I hope this is helpful (relative path evaluation is very important to my
> application).

  yes actually xmllint uses it for its shell code:

~/XML -> xmllint --shell --valid test/valid/REC-xml-19980210.xml
/ > cd spec
spec > ls
--- 15 header
--- 10 body
--- 9 back
spec > cd body
body > ls
-a- 6 div1
c-- 8
[...]

   the cd comand uses it for its argument evaluation.
   This was broken in 2.2.7, I restaured it, thanks for raising this
point !

Daniel 

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