command-not-found crashes on any input

[Michael Penkov]

Whenever I try an invalid command, I get this:

misha@misha-lmd:~$ 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

There is no further information. This was working until a day or two ago, at which point I performed a package update.

I'm using a fresh install of Precise 12.04.01 LTS. Please let me know if there is any other information that I can provide.

[Michael Penkov (misha-penkov)]

I've found the cause of the problem. I have the following in my .bashrc:

export LC_PAPER=a4

in order to work around problems with applications printing on US Letter paper by default. If I unset LC_PAPER, then command-not-found works as expected.

Why does setting LC_PAPER cause command-not-found to crash?

[Zygmunt Krynicki (zyga)]

Hi, thanks for the bug report.

I honestly don't know. I have little time to debug c-n-f now, would you mind helping me trace through the calls that lead to the crash?

[Michael Penkov (misha-penkov)]

On 4 October 2012 17:30, Zygmunt Krynicki
<email address hidden> wrote:
> Hi, thanks for the bug report.
>
> I honestly don't know. I have little time to debug c-n-f now, would you
> mind helping me trace through the calls that lead to the crash?

Sure. Here's what I see if I disable the crash_guard:

misha@misha-lmd:~/src/command-not-found-0.2.46ubuntu6$ python
command-not-found foo
Traceback (most recent call last):
  File "command-not-found", line 95, in <module>
    main()
  File "command-not-found", line 71, in main
    enable_i18n()
  File "command-not-found", line 31, in enable_i18n
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python2.7/locale.py", line 539, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

I don't think the problem is inside your actual application. If I do
the same thing in the interpreter:

misha@misha-lmd:~/src/command-not-found-0.2.46ubuntu6$ python
Python 2.7.3 (default, Aug 1 2012, 05:14:39)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import locale
>>> locale.setlocale(locale.LC_ALL, "")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/locale.py", line 539, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

Again, if I unset LC_PAPER, then everything works fine, except my
applications print in US Letter by default (not great).

Any ideas?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1061390
>
> Title:
> command-not-found crashes on any input
>
> Status in command-not-found handler:
> New
>
> Bug description:
> Whenever I try an invalid command, I get this:
>
> misha@misha-lmd:~$ 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
>
> There is no further information. This was working until a day or two
> ago, at which point I performed a package update.
>
> I'm using a fresh install of Precise 12.04.01 LTS. Please let me know
> if there is any other information that I can provide.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/command-not-found/+bug/1061390/+subscriptions