Certain special characters yield malformed output

[pteridin]

Just saw that gtsummary output with "less than x" content will get malformed to e.g.:

<r><rPr/><t>8 (<0.1%)</t></r>

• Need to escape those characters

[JanMarvin]

This should be escaped in openxlsx2. We simply never came across this. fmt_txt() should call escape_xml().

Edit: unless that's a basic inlineStr. I'll have a look.

[pteridin]

Thank you @JanMarvin!

Weaved in a workaround for older openxlsx2 versions <= 0.8.0.9000 that is more or less your implementation of escaping the non-illegal, though troublesome, characters.