Make the url file: handler be less clever

* doc/misc/url.texi (file/ftp): Remove mention of the
url-directory-index-file variable, which is no longer consulted.

* lisp/url/url-file.el (url-file-build-filename): Remove the DWIM
code from the file: handler (bug#30195): It would look for
index.html in a directory if we asked it to fetch the directory.
Determining what to do in a directory should be left up to the
programs that use this low-level library.  If the library decides
to load a different file than we specified, then things start
falling apart, as demonstrated by this bug report.

1 files changed, 0 insertions, 5 deletions

diff --git a/doc/misc/url.texi b/doc/misc/url.texi
index fb0a55b3c86..8967c71301d 100644
--- a/doc/misc/url.texi
+++ b/doc/misc/url.texi
@@ -571,11 +571,6 @@ if it has the file suffix @file{.z}, @file{.gz}, @file{.Z},
 hard-coded, and cannot be altered by customizing
 @code{jka-compr-compression-info-list}.)
 
-@defopt url-directory-index-file
-This option specifies the filename to look for when a @code{file} or
-@code{ftp} URL specifies a directory.  The default is
-@file{index.html}.  If this file exists and is readable, it is viewed.
-Otherwise, Emacs visits the directory using Dired.
 @end defopt
 
 @node info