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Drop toplevel XML-comments in libxml-parse-(xml|html)-region?
From: |
Ulf Jasper |
Subject: |
Drop toplevel XML-comments in libxml-parse-(xml|html)-region? |
Date: |
Tue, 28 Oct 2014 21:36:39 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
Hi,
parse_region from xml.c, which is called by `libxml-parse-xml-region'
and `libxml-parse-html-region', makes some effort to retain top-level
comments in xml documents. If necessary it adds an artificial node at
the top of the parse tree. As a consequence one has to check whether
the result contains the "top" node or not (see below for an example).
This behaviour is different from that of `xml-parse-region' (from
xml.el), which just discards the toplevel comments.
Can we make `libxml-parse-(xml|html)-region' consistent with
`xml-parse-region', i.e. can we drop the toplevel xml comments (and
simply call xmlDocGetRootElement)?
Ulf
----------------------------------------------------------------------
Example: Calling (libxml-parse-xml-region (point-min) (point-max)) on
<?xml version="1.0" encoding="UTF-8"?>
<foo>bar</foo>
<!--ignore me-->
results in
(top nil (foo nil "bar") (comment nil "ignore me"))
while for
<?xml version="1.0" encoding="UTF-8"?>
<foo>bar</foo>
one gets
(foo nil "bar")
without the artificial node "top".
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