when you rename files in the Book Browser, the initial state is that the whole name, including the suffix, is highlighted. would it be possible to modify the behaviour of Sigil so that only the name is highlighted, as you usually wouldn't want to change the suffix?
from
a_filename_you_want_to_change.xhtml
to
a_filename_you_want_to_change.xhtml
alternatively, some sort of batch editor of file names would be nice, as suggested in
this tread.