Recoll processes user extended file attributes as documents fields by default.
Attributes are processed as fields of the same name, after removing
the user prefix on Linux.
The [xattrtofields] section of the fields
file allows specifying translations from extended attributes names to Recoll field
names.
Name translations are set as xattrname = fieldname. They are
case-sensitive. E.g. the following would map a quite an extended attribute named "tags"
into the "keywords" field: tags = keywords.
Entering an empty translation will disable any use of the attribute.
The values from the extended attributes will not replace the data found from equivalent fields inside the document, instead they are concatenated.
Special case: an extended attribute named modificationdate will
set the dmtime field (document date) only if it is not set by an
internal document field (e.g. email Date:).
