http://www.zygoon.pl/2013/04/why-is-command-not-found-crashing.html

On Tue, Oct 7, 2014 at 5:20 PM, Ben Howard <email address hidden> wrote:
> Marking as confirmed, I can see this happen as well.
>
> ** Changed in: command-not-found
>        Status: New => Confirmed
>
> ** Description changed:
>
> - When I SSH on to a pristine cloud instance, I see a crash:
> + command-not-found crashes when the LC_TYPE is defined in the environment
> + but is not installed. This can be seen via SSH which sets the LC_TYPE.
>
>   $ env
>   TERM=xterm
>   SHELL=/bin/bash
>   <snip>
>   LANG=en_US.UTF-8
>   <snip>
>   LC_CTYPE=en_GB.UTF-8
>
>   $ foo
>   Sorry, command-not-found has crashed! Please file a bug report at:
>   https://bugs.launchpad.net/command-not-found/+filebug
>   Please include the following information with the report:
>
>   command-not-found version: 0.2.44
>
>   $ unset LC_CTYPE
>
>   $ foo
>   No command 'foo' found, did you mean:
> -  Command 'fio' from package 'fio' (universe)
> -  Command 'goo' from package 'goo' (universe)
> -  Command 'fop' from package 'fop' (main)
> -  Command 'fox' from package 'objcryst-fox' (universe)
> -  Command 'xoo' from package 'xoo' (universe)
> -  Command 'fgo' from package 'fgo' (universe)
> -  Command 'zoo' from package 'zoo' (universe)
> +  Command 'fio' from package 'fio' (universe)
> +  Command 'goo' from package 'goo' (universe)
> +  Command 'fop' from package 'fop' (main)
> +  Command 'fox' from package 'objcryst-fox' (universe)
> +  Command 'xoo' from package 'xoo' (universe)
> +  Command 'fgo' from package 'fgo' (universe)
> +  Command 'zoo' from package 'zoo' (universe)
>   foo: command not found
>
>   Steps to reproduce:
>
>   Run "LC_CTYPE=foo f"
>
> ** Description changed:
>
> - command-not-found crashes when the LC_TYPE is defined in the environment
> - but is not installed. This can be seen via SSH which sets the LC_TYPE.
> + command-not-found crashes when the LC_CTYPE is defined in the
> + environment but is not installed. This can be seen via SSH which sets
> + the LC_CTYPE.
>
>   $ env
>   TERM=xterm
>   SHELL=/bin/bash
>   <snip>
>   LANG=en_US.UTF-8
>   <snip>
>   LC_CTYPE=en_GB.UTF-8
>
>   $ foo
>   Sorry, command-not-found has crashed! Please file a bug report at:
>   https://bugs.launchpad.net/command-not-found/+filebug
>   Please include the following information with the report:
>
>   command-not-found version: 0.2.44
>
>   $ unset LC_CTYPE
>
>   $ foo
>   No command 'foo' found, did you mean:
>    Command 'fio' from package 'fio' (universe)
>    Command 'goo' from package 'goo' (universe)
>    Command 'fop' from package 'fop' (main)
>    Command 'fox' from package 'objcryst-fox' (universe)
>    Command 'xoo' from package 'xoo' (universe)
>    Command 'fgo' from package 'fgo' (universe)
>    Command 'zoo' from package 'zoo' (universe)
>   foo: command not found
>
>   Steps to reproduce:
>
>   Run "LC_CTYPE=foo f"
>
> --
> You received this bug notification because you are subscribed to
> command-not-found.
> https://bugs.launchpad.net/bugs/1378406
>
> Title:
>   Unknown LC_CTYPE causes crash
>
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