[rng-users] Re: [libxml2] Extra element XXX in interleave

[Stephane Bortzmeyer]

On Wed, Dec 14, 2005 at 09:54:27PM +0100,
 Stephane Bortzmeyer <[EMAIL PROTECTED]> wrote 
 a message of 42 lines which said:

> I'm currently bitten by what seems to be a bug in libxml2. Emacs'
> nxml-mode accepts my XML files but libxml2 claims:

Here are a few files to help reproduce the problem:

- the RelaxNG schema (in both formats)
- two test files: test.xml fails with the message I gave and
  test-ok.xml (which has only one occurrence of the <code> element)
  validates
- a Makefile if you use Unix

The results:

% xmllint --noout --relaxng schema.rng  test-ok.xml
test-ok.xml validates

% xmllint --noout --relaxng schema.rng  test.xml   
test.xml:2: element para: Relax-NG validity error : Expecting an element got 
text
Relax-NG validity error : Extra element text in interleave
test.xml:2: element para: Relax-NG validity error : Element para failed to 
validate content
test.xml fails to validate


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start = content

content = element content {mixed {element para {inlines* & code*}+}}

inlines = link* & emphasis* & text*

code = element code {text}
emphasis = element emphasis {text}
link = element link {text}

<?xml version="1.0" encoding="UTF-8"?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0";>
  <start>
    <ref name="content"/>
  </start>
  <define name="content">
    <element name="content">
      <mixed>
        <oneOrMore>
          <element name="para">
            <interleave>
              <zeroOrMore>
                <ref name="inlines"/>
              </zeroOrMore>
              <zeroOrMore>
                <ref name="code"/>
              </zeroOrMore>
            </interleave>
          </element>
        </oneOrMore>
      </mixed>
    </element>
  </define>
  <define name="inlines">
    <interleave>
      <zeroOrMore>
        <ref name="link"/>
      </zeroOrMore>
      <zeroOrMore>
        <ref name="emphasis"/>
      </zeroOrMore>
      <zeroOrMore>
        <text/>
      </zeroOrMore>
    </interleave>
  </define>
  <define name="code">
    <element name="code">
      <text/>
    </element>
  </define>
  <define name="emphasis">
    <element name="emphasis">
      <text/>
    </element>
  </define>
  <define name="link">
    <element name="link">
      <text/>
    </element>
  </define>
</grammar>

test.xml
Description: application/xml

test-ok.xml
Description: application/xml

TRANG=trang
XMLLINT=xmllint
XMLLINTARGS=--noout --relaxng schema.rng

all: test

%.rng: %.rnc 
        ${TRANG} -I rnc -O rng $< $@

test: test.xml schema.rng
        ${XMLLINT} ${XMLLINTARGS} $<