Note that muse-file-extension should not have "." in front.
* lisp/muse-project.el (muse-project-find-file): Handle case where
muse-file-extension is not specified.
* lisp/muse.el (muse-file-extension): Note that the period at the
beginning of this value should be omitted.
* lisp/muse-regexps.el (muse-update-ignored-extensions-regexp): Quote
file extension so that regexp characters inside the extension will not
goof it up. This should never be a problem in normal cases, but let's
be robust.
git-archimport-id: mwolson@gnu.org--2005/muse--main--1.0--patch-101