apt-file cannot resolve mirror://mirrors.ubuntu.com/mirrors.txt

[Okawa Koji]

I write apt url in my sources.list like this
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty main universe restricted multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-security main restricted universe multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-updates restricted multiverse main universe
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-proposed restricted multiverse main universe
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-backports restricted multiverse main universe
and i can do apt-get command
but when i run apt-file ,it is always fail . like this
W: Don't know how to handle mirror
W: Don't know how to handle mirror
W: Don't know how to handle mirror
W: Don't know how to handle mirror
W: Don't know how to handle mirror
please check source code and resolve mirror://???? in it

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: apt-file 2.5.2ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
Uname: Linux 3.13.0-40-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
Date: Tue Nov 25 15:38:52 2014
InstallationDate: Installed on 2014-01-10 (318 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
SourcePackage: apt-file
UpgradeStatus: Upgraded to trusty on 2014-05-04 (204 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Christian Kujau (christiank)]

Workaround: create another sources.list file with http:// sources and have apt-file use it:

 $ apt-file --sources-list /etc/apt/sources.list.http update

Btw, I stumbled across the mirror:// functionality only by accident on askubuntu.com - but could not find it documented. Any pointers?

[Ciro Santilli 六四事件 法轮功 (cirosantilli)]

Possible duplicate of: https://bugs.launchpad.net/ubuntu/+source/apt-file/+bug/888316

[Unit 193 (unit193)]

apt-file 3.0 uses apt to fetch the contents files rather than getting them itself, so this should be solved™

[Launchpad Janitor (janitor)]

This bug was fixed in the package apt-file - 3.1.4

---------------
apt-file (3.1.4) unstable; urgency=medium

  * Fix typo in 60disable-contents-fetching.conf. Thanks to
    Felix Geyer for spotting it. (Closes: #843453)
  * apt-file: Fix two spelling mistakes in the --help output.
    Thanks to "axhn" on IRC and Guillem Jover for spotting
    them.

 -- Niels Thykier <email address hidden> Mon, 23 Jan 2017 20:39:04 +0000