Case sensitivity

[cehoffman]

The naming of plugins has a bad inconsistency between platforms due to case sensitivity of the filesystem.

On OS X asdf plugin-add luajit works, but on a standard linux install asdf plugin-add luaJIT is requried. I suggest that plugins should all be a single case for consistency between platforms. Since the vast majority of the plugins are currently in lowercase, this should be the default and requirement of future plugins.

[adamu]

When I install Elixir on OSX, for example, using asdf install elixir 1.6.5, it installs it as capital-E Elixir (visible via asdf list).

If I then do asdf global elixir 1.6.5, the command succeeds and adds a lower-e elixir entry to .tool-versions, but it is ignored by asdf global. It's necessary to use the upper-case version: asdf global Elixir 1.6.5.

update: I realised the required case depends on the argument originally given to asdf plugin-add.

[Stratus3D]

I'm open to suggestions how we should deal with case sensitivity. @adamu you are correct, the argument you give to asdf plugin-add becomes the directory name, and all later commands must match that directory name exactly.

[jthegedus]

I support a change to forcing lowercase. This would get around OS specific handling of casing.

[hyperupcall]

I think this can now be closed - asdf-vm/asdf now validates for proper casing when adding/removing plugins