What are the things you wish Ruby (and more generally the Ruby community) would improve?
I read somewhere that Ruby is the love-child of Smalltalk and LISP, with Miss Perl as the Nanny.
I have a lot of respect for Ruby's parents, but I'm not sure I like the influence Miss Perl had on the child. Specifically, I don't like the predefined variables: I need a cheat sheet to know what they mean. You could say "just don't use them". Well, I don't... but other people do. And when I download a plugin on the Web, I have no choice but to fetch my cheat-sheet if I ever need to go and touch the source code. I just wish they would remove those from the language itself.
Also, I think that Ruby is too much of a moving target. My code breaks on every new Ruby upgrade, even on minor releases. This is true also of Ruby on Rails and most Rails plugins I have worked with: they just change all the time, and nobody seems to care whether the changes break everything or not. IMHO, although I love a lot of things in Ruby, this lack of stability is almost a show-stopper.
I wish people would consider backward compatibility between minor releases as an unbreakable rule when releasing a new language (or library or framework) version.
I wish that some of the lesser used modules of the standard library were documented.
Make require-ing files less painful. Don't ask me how, but maybe have one file dedicated to knowing the paths involved and just get rid of the relative path crud from everything else.
Getting rid of the artificial distinction between Modules and Classes would be nice.
Both Modules and Classes are Namespaces. Modules are also Mixins, while Classes aren't. Classes can also be instantiated while Modules can't. This distinction is unnecessary. Just get rid of Modules and allow Classes to be used as Mixins.
An example of a language where this works is Newspeak.
I'd appreciate being able to install ruby 1.9 as an RPM rather than having to use the source.
Make Ruby completely Message Sending based, get rid of everything that is not a message send: local variables, global variables, instance variables, class hierarchy variables, constants, magic globals, magic constants, builtin operators, builtin keywords, even literals. See Self, Ioke or Newspeak for the incredible power and elegance this gains.
I wish they would get rid of the predefined variables: $!, $&, $+, etc.
I would like to have support for static compile-time metaprogramming. The Converge Programming Language might be a good starting point.
Replace the Mixin system with a Traits system.
Replace Exceptions with a Common Lisp style Conditions system.
来源：https://stackoverflow.com/questions/585457/what-are-the-things-you-would-like-improved-in-the-ruby-language