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This PR adds
:pretty_print
,:indent
and:compact
options to allow prettified XML output.There is an old PR #35 that has the same purpose, but it stumbled over problems in Builder gem. In this PR I don't mess with Builder gem but instead use
REXML
from standard Ruby library to format generated XML.Prettifying doesn't work for XML documents generated from an array without
unwrap
option set totrue
as such documents are not valid and cannot be formatted byREXML
. This case is just bypassed, no exceptions thrown.