If you leave read-file-name-completion-ignore-case nil (the default) and
do the rest of recipe, it downloads the content of the URL, as expected.

I suspect this bug is related to bug#11339.


In GNU Emacs 24.3.50.6 (x86_64-suse-linux-gnu, GTK+ Version 3.4.4)
 of 2013-07-05 on rosalinde
Bzr revision: 113286 sdl.web@gmail.com-20130705023739-rabvfwfbinmi56v3
Windowing system distributor `The X.Org Foundation', version 11.0.11203000
System Description:	openSUSE 12.2 (x86_64)

Configured using:
 `configure --without-toolkit-scroll-bars CFLAGS=-g3 -O0'

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t