single datafieldset in config file gives "Not an ARRAY reference" error

[u-fischer]

I was trying to change some bib fields with biber's tool mode using a datafieldset and got the error Not an ARRAY reference.

As an example. With this config file

<?xml version="1.0" encoding="UTF-8"?>
<config>
<output_fieldcase>title</output_fieldcase>
<datafieldset name="field">
    <member fieldtype="field"/>
</datafieldset>
  <sourcemap>
    <maps datatype="bibtex" level="user">
      <map map_overwrite="1" map_foreach="field">
        <map_step map_field_set="$MAPLOOP" map_null="1"/>
      </map>
    </maps>    
</sourcemap>
</config>

running biber --tool --configfile biber-test.conf test.bib outputs

Not an ARRAY reference at C:\Users\NILILA~1\AppData\Local\Temp\par-4e696c696c616e6432303230\cache-96d297aa7563e182b1dd640f406e913a11204801\inc\lib/Biber/Config.pm line 405.

Everything works fine if I add a second arbitrary datafieldset:

<?xml version="1.0" encoding="UTF-8"?>
<config>
<output_fieldcase>title</output_fieldcase>
<datafieldset name="blub">
</datafieldset>
<datafieldset name="field">
    <member fieldtype="field"/>
</datafieldset>
  <sourcemap>
    <maps datatype="bibtex" level="user">
      <map map_overwrite="1" map_foreach="field">
        <map_step map_field_set="$MAPLOOP" map_null="1"/>
      </map>
    </maps>    
</sourcemap>
</config>

[plk]

I think I know what this is - will fix shortly.

[plk]

Should be fixed in DEV and updated DEV binaries on SF.

[plk]

2.20 is now released