Paul
FYI, I just filed a ticket (#11640
<https://www.lyx.org/trac/ticket/11640>) on a bug in the new preamble
external edit feature. For some odd reason, the file path is
(tmp/lyx_tmpdir...) is passed correctly to one editor (xed), but the "t"
in "tmp" is lopped off when passing it to another editor (notepad).