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class Pry
# @api private
# @since ?.?.?
module ControlDHandler
# Deal with the ^D key being pressed. Different behaviour in different
# cases:
# 1. In an expression behave like `!` command.
# 2. At top-level session behave like `exit` command.
# 3. In a nested session behave like `cd ..`.
def self.default(pry_instance)
if !pry_instance.eval_string.empty?
# Clear input buffer.
pry_instance.eval_string = ''
elsif pry_instance.binding_stack.one?
pry_instance.binding_stack.clear
throw(:breakout)
else
# Otherwise, saves current binding stack as old stack and pops last
# binding out of binding stack (the old stack still has that binding).
cd_state = Pry::CommandState.default.state_for('cd')
cd_state.old_stack = pry_instance.binding_stack.dup
pry_instance.binding_stack.pop
end
end
end
end
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