Bug#733111: update uscan Files-Excluded parsing to support escaped names

[Russ Allbery]

Package: devscripts
Version: 2.13.8
Severity: normal

In order to support file names that contain whitespace, uscan's parsing
of Files-Excluded needs to handle the character escaping protocol.  The
following code should correctly handle foo\ bar, as well as the other
more pathological cases such as foo\\ bar (which is two files).

    my @excluded
      = ($data->{"files-excluded"} =~ /(?:\A|\G[ ]+)((?:\\.|[^\\ ])+)/g);
    @excluded = map { s/\\(.)/$1/g; $_ } @excluded;
    foreach (@excluded) {

-- Package-specific info:

--- /etc/devscripts.conf ---

--- ~/.devscripts ---
DEBCHANGE_RELEASE_HEURISTIC=changelog
DEBCOMMIT_STRIP_MESSAGE=no
DEBSIGN_KEYID=D15D313882004173

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.11-2-686-pae (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages devscripts depends on:
ii  dpkg-dev     1.16.12
ii  libc6        2.17-97
ii  perl         5.18.1-5
ii  python3      3.3.2-17
pn  python3:any  <none>

Versions of packages devscripts recommends:
ii  at                          3.1.14-1
ii  curl                        7.34.0-1
ii  dctrl-tools                 2.23
ii  debian-keyring              2013.07.31
ii  dput-ng [dput]              1.7
pn  equivs                      <none>
ii  fakeroot                    1.18.4-2
ii  gnupg                       1.4.15-1.1
ii  libdistro-info-perl         0.11
ii  libencode-locale-perl       1.03-1
ii  libjson-perl                2.61-1
ii  liblwp-protocol-https-perl  6.04-2
ii  libparse-debcontrol-perl    2.005-4
ii  libsoap-lite-perl           0.716-1
ii  liburi-perl                 1.60-1
ii  libwww-perl                 6.05-2
ii  lintian                     2.5.20
ii  man-db                      2.6.5-2
ii  patch                       2.7.1-4
ii  patchutils                  0.3.2-3
pn  python3-debian              <none>
pn  python3-magic               <none>
ii  sensible-utils              0.0.9
ii  strace                      4.5.20-2.3
ii  unzip                       6.0-10
ii  wdiff                       1.2.1-1
ii  wget                        1.14-5
ii  xz-utils                    5.1.1alpha+20120614-2

Versions of packages devscripts suggests:
ii  bsd-mailx [mailx]            8.1.2-0.20131005cvs-1
ii  build-essential              11.6
pn  cvs-buildpackage             <none>
ii  devscripts-el                35.8
ii  gnuplot                      4.6.4-1
ii  gpgv                         1.4.15-1.1
ii  libauthen-sasl-perl          2.1500-1
ii  libfile-desktopentry-perl    0.07-1
ii  libnet-smtp-ssl-perl         1.01-3
pn  libterm-size-perl            <none>
ii  libtimedate-perl             2.3000-1
ii  libyaml-syck-perl            1.27-2+b1
ii  mutt                         1.5.21-6.4
ii  openssh-client [ssh-client]  1:6.4p1-1
ii  svn-buildpackage             0.8.5
ii  w3m                          0.5.3-12

-- no debconf information