Bash completion triggers execution

[Tuplanolla]

There is a bug in the file cabal-install/bash-completion/cabal that
causes incomplete and potentially dangerous commands to be executed when
the shell is requested to complete them.
Typing in cabal run --, adding an argument to the end and
trying to complete it by hitting Tab twice triggers the bug.
The behavior is as follows.

$ cat > Main.hs
module Main where

import System.Environment

main :: IO ()
main = getArgs >>= putStrLn . ("(" ++) . (++ ")") . unwords
$ cabal init --is-executable --non-interactive

Guessing dependencies...

Generating LICENSE...
Warning: unknown license type, you must put a copy in LICENSE yourself.
Generating Setup.hs...
Generating bug.cabal...

Warning: no synopsis given. You should edit the .cabal file and add one.
You may want to edit the .cabal file and add a Description field.
$ touch LICENSE
$ cabal run -- bug with arguments
(with            Running          bug-0.1.0.0...   for
--list-options)  arguments        bug...
Preprocessing    bug              executable
$ cabal run -v0 -- bug with arguments
(with            --list-options)  arguments