Why isn't 'gets' working in my Ruby script when I run from TextMate?

When running the following ruby script:

puts gets.inspect

On the terminal I am prompted for input and then the inspect output is shown, but if I run the same script from inside TextMate using the CMD+R shortcut then it just outputs nil as if there is no gets method.

Why is this? From what I开发者_StackOverflow社区've read TextMate is supposed to show an input dialog when input from STDIN is requested by the script, but that isn't happening in this case.

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See this blog entry; presumably you're on Snow Leopard?

From the comments, some users say that this file has worked for them on Snow Leopard. Per @dmarkow's answer, copy this file to:
/Applications/TextMate.app/Contents/SharedSupport/Support/lib/
You may want to keep a copy of the file around as updates to TextMate may replace it.

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Specifically, you need to copy the tm_interactive_input.dylib file linked to by Phrogz in the following path:

/Applications/TextMate.app/Contents/SharedSupport/Support/lib/tm_interactive_input.dylib

Keep in mind that it's possible any TextMate updates will overwrite or delete this file.