I can't add any attachment to my wiki. When I select file using "Browse"
button and click "Upload Attachment", then `ikiwiki.cgi` file displays
the error message like below:

    Błąd: failed to get filehandle

The same message I can see in the Apache log file. There is also
following warning:

    Use of uninitialized value in length at /usr/share/perl5/IkiWiki/Plugin/attachment.pm line 36.

> This is unrelated, I've fixed the warning message. --[[Joey]]

Is it Ikiwiki bug or my attachment plugin is misconfigured? --[[Paweł|ptecza]]

> Joey, please fix the colon in page name of my report. Ikiwiki sets
> "attachment:\_failed\_to\_get\_filehandle/" URL on "Bugs" page and
> the report is not clickable in my Epiphany browser:

>     Firefox doesn't know how to open this address, because the protocol
>     (attachment) isn't associated with any program.

> I can only edit it :) Bad handling ':' character by Ikiwiki is probably
> its another bug.
> --[[Paweł|ptecza]]