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, 9 insertions, 1 deletions

diff --git a/etc/NEWS b/etc/NEWS
index e8383b7c241..d29a513c70c 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -540,7 +540,15 @@ For instance, if /etc/mailcap has an entry for image/gif, that one
 will be chosen even if you have an entry for image/* in your
 ~/.mailcap file.  But with the new method, entries from ~/.mailcap
 overrides all system and Emacs-provided defaults.  To get the old
-method back, set `mailcap-prefer-mailcap-viewers' to nil
+method back, set `mailcap-prefer-mailcap-viewers' to nil.
+
+
+** URL
+
+*** The file: handler no longer looks for index.html in directories if
+you ask it for a file:///dir URL.  Since this is a low-level library,
+such decisions (if they are to be made at all) are left to
+higher-level functions.
 
 
 +++