[Bug 1327586] [NEW] bash-completion functions should be prefixed with __bash_completion__ to stop them conflicting with commands

[Simon Arlott]

Public bug reported:

All of the functions defined in the /usr/share/bash-
completion/completions/* files end up in the shell's global function
namespace.

This causes them override lookups for commands in $PATH, which means
that any command starting with an underscore is at risk of being
overridden by a completions script.

This caused my $HOME/bin/_ssh script to stop being called after the
/usr/share/bash-completion/completions/ssh was loaded. The _ssh function
was being called instead of my script.

If the function names were prefixed with __bash_completion__ then they
would be less likely to conflict with any real commands or user defined
functions in a user profile file.

** Affects: bash-completion (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1327586

Title:
  bash-completion functions should be prefixed with __bash_completion__
  to stop them conflicting with commands

Status in “bash-completion” package in Ubuntu:
  New

Bug description:
  All of the functions defined in the /usr/share/bash-
  completion/completions/* files end up in the shell's global function
  namespace.

  This causes them override lookups for commands in $PATH, which means
  that any command starting with an underscore is at risk of being
  overridden by a completions script.

  This caused my $HOME/bin/_ssh script to stop being called after the
  /usr/share/bash-completion/completions/ssh was loaded. The _ssh
  function was being called instead of my script.

  If the function names were prefixed with __bash_completion__ then they
  would be less likely to conflict with any real commands or user
  defined functions in a user profile file.

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