FieldUpdater: Ignores fields with formatting/spelling/... within field

[matthiaso]

The following field:

is ignored by org.docx4j.model.fields.FieldUpdater.update(boolean)

An error is logged:

ERROR [main] org.docx4j.model.fields.FieldUpdater.extractInstr(FieldUpdater.java:309) - TODO DOCPROPERTY field contained complex instruction
INFO  [main] org.docx4j.model.fields.FieldUpdater.update(FieldUpdater.java:87) - 
Simple Fields in /word/document.xml
============= 
Found 0 simple fields 
 
 Complex Fields in /word/document.xml
============== 
Found 1 fields 
null
null -> NOT FOUND! 

Taking a look at the document itself it seems that the instructions could just be concatenated, e.g. change within org.docx4j.model.fields.FieldUpdater.extractInstr(List<Object>):

String[] instrAsString = instructions.stream()
    .map(XmlUtils::unwrap)
    .map(o1 -> {
      if (o1 instanceof Text) {
        return ((Text) o1).getValue();
      }
      else {
        if (log.isErrorEnabled()) {
          log.error("TODO: extract field name from " + o1.getClass().getName());
          log.error(XmlUtils.marshaltoString(instructions.get(0), true, true));
        }
        return null;
      }
    })
    .toArray(i -> new String[i]);

if (Arrays.stream(instrAsString).anyMatch(Objects::isNull)) {
  return null;
}

return Arrays.stream(instrAsString).collect(Collectors.joining());

[matthiaso]

See also #634

[plutext]

Hi Matthias

I can replicate this issue with formatting, for example:

            <w:r>
                <w:fldChar w:fldCharType="begin"/>
            </w:r>
            <w:r>
                <w:instrText xml:space="preserve"> DOCVARIABLE  JUST_A_</w:instrText>
            </w:r>
            <w:r >
                <w:rPr>
                    <w:b/>
                </w:rPr>
                <w:instrText>TEST</w:instrText>
            </w:r>
            <w:r>
                <w:instrText xml:space="preserve">  \* MERGEFORMAT </w:instrText>
            </w:r>
            <w:r>
                <w:fldChar w:fldCharType="end"/>
            </w:r>

But I haven't been able to do so with a spelling error in the variable name? This doesn't affect the validity of the issue; it is just about understanding possible causes.