Ruby

Ctrl + Shift + NumPad - / Ctrl + Shift + NumPad + // Windows
Cmd + Shift + NumPad - / Cmd + Shift + NumPad - // Mac

Ctrl + Shift + NumPad - / Ctrl + Shift + NumPad + // Windows
Cmd + Shift + NumPad - / Cmd + Shift + NumPad - // Mac

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