aptitude update doesn't work for files in /etc/apt/sources.list.d/ with a + in their name

[freethinker]

Binary package hint: aptitude

I created a PPA @ https://launchpad.net/~pratikmsinha/+archive/ruby192+bindings/ and added it to system using the add-apt-repoistory command. This resulted in the creation of the file 'pratikmsinha-ruby192+bindings-lucid.list' in /etc/apt/sources.list.d/. When I updated using 'aptitude update' (I tried apt-get update too), I couldn't see the packages in the apt cache => 'apt-cache search ruby1.9.2' didn't work. I changed the filename to 'pratikmsinha-ruby192bindings-lucid.list' and did a 'aptitude update' and after that I could see the package in the cache.

Though PPAs allow the '+' sign in the names, when the ppa is added to the system using the add-apt-repository command (recommended way), it creates a file which aptitude/apt-get cannot handle.

I wonder if this bug should be filed under aptitude or python-software-properties.