Fields with a "-" in the name are interpreted as functions in the fl= parameter.

If you query for a field that has a "-" character in the name, you get odd results. I took the example schema and added a field called "in-stock" to go along with the existing "inStock" field.

A query for http://localhost:8983/solr/select?q=*:*&fl=id,in-stock throws back an error saying the field "in" can't be found.

I can sort of work around it by quoting the field name as "in-stock":

http://localhost:8983/solr/select?q=*:*&fl=id,%22in-stock%22&rows=1

However the output is still off:

<doc>
<str name="id">GB18030TEST</str>
<str name=""in-stock"">in-stock</str>
</doc>

In looking at it, I think the dash character causes the field name to be interpreted as an actual function!