url: file/ftp
4.2 file and ftp
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The ‘ftp’ and ‘file’ schemes are defined in RFC 1808. The ‘url’ library
treats ‘ftp:’ and ‘file:’ as synonymous. Such URLs have the form
ftp://USER:PASSWORD@HOST:PORT/FILE
file://USER:PASSWORD@HOST:PORT/FILE
If the URL specifies a local file, it is retrieved by reading the file
contents in the usual way. If it specifies a remote file, it is
retrieved using either the Tramp or the Ange-FTP package.
(emacs)Remote Files.
When retrieving a compressed file, it is automatically uncompressed
if it has the file suffix ‘.z’, ‘.gz’, ‘.Z’, ‘.bz2’, or ‘.xz’. (The
list of supported suffixes is hard-coded, and cannot be altered by
customizing ‘jka-compr-compression-info-list’.)
-- User Option: url-directory-index-file
This option specifies the filename to look for when a ‘file’ or
‘ftp’ URL specifies a directory. The default is ‘index.html’. If
this file exists and is readable, it is viewed. Otherwise, Emacs
visits the directory using Dired.