Allow numbers in system name

Why are you not allowing numbers in the theme name?

Because the manual subtheme creation guide says so.

So the question becomes, why does the guide say so? Well, I'm not sure. I tried asking in #drupal, and "ksenzee" thinks it might only be because theme system names are used in the names of various PHP functions, and PHP functions can't begin with a digit, though they can appear elsewhere in function names. But it was simpler to say "don't use any digits in theme names" than "don't use any digits at the beginning of theme names." I guess it's same to assume that until I hear otherwise.

By the same token, restricting system names to only lowercase letters may also be a false limitation.

That being said, will I change Zenophile to allow numbers? Well, I'm not sure. Whether it's possible or not to use numbers (or capitals) in Zen subtheme names, the docs still recommend against it, for whatever reason.

Until if/when I change this, could you get by by spelling out the numbers, maybe - theme_one and theme_two and theme_three? Or Roman numerals: theme_i, theme_ii, theme_iii.

Subscribing. I want my theme to be called 'gulf2010' and I can't use zenophile because of this flaw.

Okay, okay. Please check out the next dev release once the robot has packaged it; it will let you create a theme with a number in the sysname. (The description on the "System name" field still says otherwise, but the verify function for the form won't stop you anymore.) Haven't extensively tested it yet, though.