Bug#772343: checkbashisms: mis-detection of >&@

[Thorsten Glaser]

Package: devscripts
Version: 2.14.11
Severity: minor

Hi,

the following script causes a checkbashism mis-detection:

-----BEGIN cutting here may damage your screen surface-----
#!/bin/sh
echo >&@ E: $2 returned error code $1
echo >&2 bla
-----END cutting here may damage your screen surface-----

tglase at tglase:~ $ checkbashisms x                                                                               
possible bashism in x line 2 (should be >word 2>&1):
echo >&@ E: $2 returned error code $1

This was first reported in #772290 (thanks Raphael Geissert).

The >&@ is a genuine typo for >&2 and not a bashism¹. That being
said, it would be nice if checkbashisms could continue reporting
it, because of the following:

tglase at tglase:~ $ mksh x foo bar
x[2]: >&@ : illegal file descriptor name
bla
tglase at tglase:~ $ bash x foo bar
bla
tglase at tglase:~ $ dash x foo bar
x: 3: x: Syntax error: Bad fd number

dash aborts the script, instead of continuing, as the other shells
do, which is usually the wrong thing to do.


① … and especially not the dreaded &> bashism.

-- Package-specific info:

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

--- ~/.devscripts ---
DEBCHANGE_AUTO_NMU=no
DEBCHANGE_MAINTTRAILER=no
DEBCHANGE_MULTIMAINT_MERGE=yes
DEBCHANGE_RELEASE_HEURISTIC=log

-- System Information:
Debian Release: 8.0
  APT prefers unreleased
  APT policy: (500, 'unreleased'), (500, 'buildd-unstable'), (500, 'unstable')
Architecture: x32 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/lksh
Init: sysvinit (via /sbin/init)

Versions of packages devscripts depends on:
ii  dpkg-dev     1.17.22
ii  libc6        2.19-13
ii  perl         5.20.1-3
ii  python3      3.4.2-2
pn  python3:any  <none>

Versions of packages devscripts recommends:
ii  at                          3.1.16-1
ii  curl                        7.38.0-3
ii  dctrl-tools                 2.23
ii  debian-keyring              2014.08.31
ii  dput                        0.9.6.4
pn  equivs                      <none>
ii  fakeroot                    1.20.2-1
ii  file                        1:5.20-2
ii  gnupg                       1.4.18-6
pn  libdistro-info-perl         <none>
ii  libencode-locale-perl       1.03-1
ii  libjson-perl                2.61-1
ii  liblwp-protocol-https-perl  6.06-2
pn  libparse-debcontrol-perl    <none>
pn  libsoap-lite-perl           <none>
ii  liburi-perl                 1.64-1
ii  libwww-perl                 6.08-1
ii  lintian                     2.5.30+deb8u3
ii  man-db                      2.7.0.2-3
ii  patch                       2.7.1-6
ii  patchutils                  0.3.3-1
pn  python3-debian              <none>
pn  python3-magic               <none>
ii  sensible-utils              0.0.9
ii  strace                      4.9-2
ii  unzip                       6.0-12
ii  wdiff                       1.2.2-1
ii  wget                        1.16-3
ii  xz-utils                    5.1.1alpha+20120614-2+b1

Versions of packages devscripts suggests:
ii  bsd-mailx [mailx]            8.1.2-0.20140825cvs-1
ii  build-essential              11.7
pn  cvs-buildpackage             <none>
pn  debbindiff                   <none>
pn  devscripts-el                <none>
pn  gnuplot                      <none>
ii  gpgv                         1.4.18-6
pn  libauthen-sasl-perl          <none>
pn  libfile-desktopentry-perl    <none>
ii  libnet-smtp-ssl-perl         1.01-3
pn  libterm-size-perl            <none>
ii  libtimedate-perl             2.3000-2
pn  libyaml-syck-perl            <none>
pn  mutt                         <none>
ii  openssh-client [ssh-client]  1:6.7p1-3
pn  svn-buildpackage             <none>
pn  w3m                          <none>

-- Configuration Files:
/etc/bash_completion.d/devscripts.pkgnames [Errno 2] No such file or directory: u'/etc/bash_completion.d/devscripts.pkgnames'

-- no debconf information