Function: f-no-ext
f-no-ext is a function alias for file-name-sans-extension, defined in
files.el.gz.
Signature
(f-no-ext FILENAME)
Documentation
Return FILENAME sans final "extension" and any backup version strings.
The extension, in a file name, is the part that begins with the last .,
except that a leading . of the file name, if there is one, doesn't count.
Any extensions that indicate backup versions and version strings are
removed by calling file-name-sans-versions, which see, before looking
for the "real" file extension.