Vimeo doesn't work with fragment identifiers

[m42a]

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--no-part', '-v', '--no-playlist', 'http://vimeo.com/22053820#at=0']
[debug] youtube-dl version 2013.10.23.2
[debug] Python version 3.3.2 - Linux-3.11.6-1-ck-x86_64-with-arch
[debug] Proxy map: {}
WARNING: Falling back on generic information extractor.
[generic] 22053820#at=0: Downloading webpage
[generic] 22053820#at=0: Extracting information
ERROR: Unsupported URL: http://vimeo.com/22053820#at=0; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.
Traceback (most recent call last):
  File "/usr/lib/python3.3/site-packages/youtube_dl/YoutubeDL.py", line 342, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/common.py", line 121, in extract
    return self._real_extract(url)
  File "/usr/lib/python3.3/site-packages/youtube_dl/extractor/generic.py", line 180, in _real_extract
    raise ExtractorError(u'Unsupported URL: %s' % url)
youtube_dl.utils.ExtractorError: Unsupported URL: http://vimeo.com/22053820#at=0; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.

Downloading the video without the #at=0 at the end works correctly.

[phihag]

Thanks for the report. This has been fixed in youtube-dl v2013.10.28. From the standard installation, you can type sudo youtube-dl -U to update, but it looks like you are using your distribution's packaging, so you'll have to use their update mechanism.