I think there is a way to do it by passing parameters to emeditor.exe like
file://C:emeditoremeditor.exe–open/c:file.txt–macros/c:macros.jsee–macros_param/search_for=search\%20this&action=goto_firstresult
But I agree that this is weird and have problems.
Still, it is interesting problem to solve.
I like connecting my text files. Links are a power.