Please make it more obvious when fuzzy matching is not available

This bug was originally reported by Chris Lamb (lamby@debian.org) in Debian bug #888237:

Source: diffoscope
Version: 78
Severity: wishlist
Owner: Marc MERLIN <marc@merlins.org>
X-Debbugs-Cc: Marc MERLIN <marc@merlins.org>


----- Original message -----
From: Marc MERLIN <marc@merlins.org>
To: lamby@debian.org
Subject: diffoscope and file renames
Date: Wed, 24 Jan 2018 16:21:28 +1100

Hi,

Thanks for your talk today.

I just tried this on debian:
saruman:~$ diffoscope --version
diffoscope 78

diffoscope youtube-dl_2014.07.15-1_all.deb youtube-dl_2017.02.07-1_all.deb =
> /tmp/diff

It didn't seem to track renames and show a diff:
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 -usr/lib/python2.7/dist-packages/yo=
utube_dl/extractor/bilibili.py
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 +usr/lib/python3/dist-packages/yout=
ube_dl/extractor/bilibili.py
=E2=94=82 =E2=94=82 =E2=94=82 --rw-r--r--   0 root         (0) root        =
 (0)     3657 2014-07-13 15:21:20.000000 ./usr/lib/python2.7/dist-packages/=
youtube_dl/extractor/bilibili.py
=E2=94=82 =E2=94=82 =E2=94=82 +-rw-r--r--   0 root         (0) root        =
 (0)     9123 2017-02-09 07:12:11.000000 ./usr/lib/python3/dist-packages/yo=
utube_dl/extractor/bilibili.py

I'm attaching the files if that helps