Bug#702759: viewdiff: command not found, but mentioned in help

[Regid Ichira]

Package:  vim
Version:  2:7.3.547-7
Severity: normal

  The viewdiff command is not found, but mentioned in help:

    $ viewdiff
    bash: viewdiff: command not found
    $

    $ grep viewdiff /usr/share/vim/vim73/doc/diff.txt
    You may also use "viewdiff" or "gviewdiff".  Vim starts in readonly mode then.
    $

  vimdiff is installed.