113468 – print/acroread7 - PATCH (dirty workaround) - acroread shell script produces error when $version is empty

no flags

acroread (shell script) produces the following message ...

  /misc/local/Adobe/Acrobat7.0/ENU/bin/acroread: line 486: [: -ge: unary operator expected

... which does not prevent the actual program to be launched).
Running with -x option around $version assignment ...

  480 set -x
  481         version=`get_gtk_file_ver "$ifile"`
  482 set +x

... produces ...

  ++ get_gtk_file_ver /misc/local/lib/libgtk-x11-2.0.so
  ++ '[' -f /misc/local/lib/libgtk-x11-2.0.so ']'
  ++ '[' -h /misc/local/lib/libgtk-x11-2.0.so ']'
  +++ readlink /misc/local/lib/libgtk-x11-2.0.so
  ++++ /bin/pwd
  +++ OLDPWD=/misc/home/parv
  +++ lfile=/misc/local/lib/libgtk-x11-2.0.so
  +++ '[' -h /misc/local/lib/libgtk-x11-2.0.so -a -f /misc/local/lib/libgtk-x11-2.0.so ']'
  ++++ dirname /misc/local/lib/libgtk-x11-2.0.so
  +++ CWD=/misc/local/lib
  ++++ expr /misc/local/lib : '\.\.'
  +++ '[' 0 = 2 ']'
  ++++ basename /misc/local/lib/libgtk-x11-2.0.so
  +++ lfile=libgtk-x11-2.0.so
  +++ cd /misc/local/lib
  ++++ /bin/ls -l libgtk-x11-2.0.so
  ++++ sed 's/^.*-> *\(.*\) *$/\1/'
  +++ lfile=libgtk-x11-2.0.so.0
  +++ '[' -h libgtk-x11-2.0.so.0 -a -f libgtk-x11-2.0.so.0 ']'
  +++ '[' -f libgtk-x11-2.0.so.0 ']'
  ++++ dirname libgtk-x11-2.0.so.0
  +++ CWD=.
  ++++ basename libgtk-x11-2.0.so.0
  +++ lfile=libgtk-x11-2.0.so.0
  ++++ expr . : '\.\.'
  +++ '[' 0 = 2 ']'
  +++ cd .
  ++++ /bin/pwd
  +++ echo /misc/local/lib/libgtk-x11-2.0.so.0
  +++ cd /misc/local/lib
  +++ return 0
  ++ ifile=/misc/local/lib/libgtk-x11-2.0.so.0
  ++ '[' 0 -eq 1 ']'
  +++ basename /misc/local/lib/libgtk-x11-2.0.so.0
  ++ mfile=libgtk-x11-2.0.so.0
  ++ echo libgtk-x11-2.0.so.0
  ++ grep -q 'libgtk-x11-\([0-9]*\).0.so.0.\([0-9]*\).\([0-9]*\)'
  ++ '[' 1 -ne 0 ']'
  ++ return 1
  + version=
  + set +x
  /misc/local/Adobe/Acrobat7.0/ENU/bin/acroread: line 488: [: -ge: unary operator expected

Fix: This is only a dirty workaround around the actual problem, but should
be considered to make the script robust ...

How-To-Repeat: 
Try to run above acroread version.