diff --git a/prompt/key.go b/prompt/key.go
new file mode 100644
index 0000000..4b9a423
--- /dev/null
+++ b/prompt/key.go
@@ -0,0 +1,254 @@
+package prompt
+
+type Key int
+
+const (
+	Escape Key = iota
+
+	ControlA
+	ControlB
+	ControlC
+	ControlD
+	ControlE
+	ControlF
+	ControlG
+	ControlH
+	ControlI
+	ControlJ
+	ControlK
+	ControlL
+	ControlM
+	ControlN
+	ControlO
+	ControlP
+	ControlQ
+	ControlR
+	ControlS
+	ControlT
+	ControlU
+	ControlV
+	ControlW
+	ControlX
+	ControlY
+	ControlZ
+
+	ControlSpace
+	ControlBackslash
+	ControlSquareClose
+	ControlCircumflex
+	ControlUnderscore
+	ControlLeft
+	ControlRight
+	ControlUp
+	ControlDown
+
+	Up
+	Down
+	Right
+	Left
+
+	ShiftLeft
+	ShiftUp
+	ShiftDown
+	ShiftRight
+
+	Home
+	End
+	Delete
+	ShiftDelete
+	ControlDelete
+	PageUp
+	PageDown
+	BackTab
+	Insert
+	Backspace
+
+	// Aliases.
+	Tab
+	Enter
+	// Actually Enter equals ControlM, not ControlJ,
+	// However, in prompt_toolkit, we made the mistake of translating
+	// \r into \n during the input, so everyone is now handling the
+	// enter key by binding ControlJ.
+
+	// From now on, it's better to bind `ASCII_SEQUENCES.Enter` everywhere,
+	// because that's future compatible, and will still work when we
+	// stop replacing \r by \n.
+
+	F1
+	F2
+	F3
+	F4
+	F5
+	F6
+	F7
+	F8
+	F9
+	F10
+	F11
+	F12
+	F13
+	F14
+	F15
+	F16
+	F17
+	F18
+	F19
+	F20
+	F21
+	F22
+	F23
+	F24
+
+	// Matches any key.
+	Any
+
+	// Special
+	CPRResponse
+	Vt100MouseEvent
+	WindowsMouseEvent
+	BracketedPaste
+
+	// Key which is ignored. (The key binding for this key should not do anything.)
+	Ignore
+)
+
+type ASCIICode struct {
+	Key       Key
+	ASCIICode []byte
+}
+
+var ASCII_SEQUENCES []*ASCIICode = []*ASCIICode{
+	&ASCIICode{Key: Escape, ASCIICode: []byte{0x1b}},
+
+	&ASCIICode{Key: ControlSpace, ASCIICode: []byte{0x00}},
+	&ASCIICode{Key: ControlA, ASCIICode: []byte{0x1}},
+	&ASCIICode{Key: ControlB, ASCIICode: []byte{0x2}},
+	&ASCIICode{Key: ControlC, ASCIICode: []byte{0x3}},
+	&ASCIICode{Key: ControlD, ASCIICode: []byte{0x4}},
+	&ASCIICode{Key: ControlE, ASCIICode: []byte{0x5}},
+	&ASCIICode{Key: ControlF, ASCIICode: []byte{0x6}},
+	&ASCIICode{Key: ControlG, ASCIICode: []byte{0x7}},
+	&ASCIICode{Key: ControlH, ASCIICode: []byte{0x8}},
+	&ASCIICode{Key: ControlI, ASCIICode: []byte{0x9}},
+	&ASCIICode{Key: ControlJ, ASCIICode: []byte{0xa}},
+	&ASCIICode{Key: ControlK, ASCIICode: []byte{0xb}},
+	&ASCIICode{Key: ControlL, ASCIICode: []byte{0xc}},
+	&ASCIICode{Key: ControlM, ASCIICode: []byte{0xd}},
+	&ASCIICode{Key: ControlN, ASCIICode: []byte{0xe}},
+	&ASCIICode{Key: ControlO, ASCIICode: []byte{0xf}},
+	&ASCIICode{Key: ControlP, ASCIICode: []byte{0x10}},
+	&ASCIICode{Key: ControlQ, ASCIICode: []byte{0x11}},
+	&ASCIICode{Key: ControlR, ASCIICode: []byte{0x12}},
+	&ASCIICode{Key: ControlS, ASCIICode: []byte{0x13}},
+	&ASCIICode{Key: ControlT, ASCIICode: []byte{0x14}},
+	&ASCIICode{Key: ControlU, ASCIICode: []byte{0x15}},
+	&ASCIICode{Key: ControlV, ASCIICode: []byte{0x16}},
+	&ASCIICode{Key: ControlW, ASCIICode: []byte{0x17}},
+	&ASCIICode{Key: ControlX, ASCIICode: []byte{0x18}},
+	&ASCIICode{Key: ControlY, ASCIICode: []byte{0x19}},
+	&ASCIICode{Key: ControlZ, ASCIICode: []byte{0x1a}},
+
+	&ASCIICode{Key: ControlBackslash, ASCIICode: []byte{0x1c}},
+	&ASCIICode{Key: ControlSquareClose, ASCIICode: []byte{0x1d}},
+	&ASCIICode{Key: ControlCircumflex, ASCIICode: []byte{0x1e}},
+	&ASCIICode{Key: ControlUnderscore, ASCIICode: []byte{0x1f}},
+	&ASCIICode{Key: Backspace, ASCIICode: []byte{0x7f}},
+
+	&ASCIICode{Key: Up, ASCIICode: []byte{0x1b, 0x5b, 0x41}},
+	&ASCIICode{Key: Down, ASCIICode: []byte{0x1b, 0x5b, 0x42}},
+	&ASCIICode{Key: Right, ASCIICode: []byte{0x1b, 0x5b, 0x43}},
+	&ASCIICode{Key: Left, ASCIICode: []byte{0x1b, 0x5b, 0x44}},
+	&ASCIICode{Key: Home, ASCIICode: []byte{0x1b, 0x5b, 0x48}},
+	&ASCIICode{Key: Home, ASCIICode: []byte{0x1b, 0x4f, 0x48}},
+	&ASCIICode{Key: End, ASCIICode: []byte{0x1b, 0x5b, 0x70}},
+	&ASCIICode{Key: End, ASCIICode: []byte{0x1b, 0x4f, 0x70}},
+
+	&ASCIICode{Key: Delete, ASCIICode: []byte{0x1b, 0x5b, 0x33, 0x7e}},
+	&ASCIICode{Key: ShiftDelete, ASCIICode: []byte{0x1b, 0x5b, 0x33, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: ControlDelete, ASCIICode: []byte{0x1b, 0x5b, 0x33, 0x3b, 0x05, 0x7e}},
+	&ASCIICode{Key: Home, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x7e}},
+	&ASCIICode{Key: End, ASCIICode: []byte{0x1b, 0x5b, 0x04, 0x7e}},
+	&ASCIICode{Key: PageUp, ASCIICode: []byte{0x1b, 0x5b, 0x05, 0x7e}},
+	&ASCIICode{Key: PageDown, ASCIICode: []byte{0x1b, 0x5b, 0x06, 0x7e}},
+	&ASCIICode{Key: Home, ASCIICode: []byte{0x1b, 0x5b, 0x07, 0x7e}},
+	&ASCIICode{Key: End, ASCIICode: []byte{0x1b, 0x5b, 0x09, 0x7e}},
+	&ASCIICode{Key: BackTab, ASCIICode: []byte{0x1b, 0x5b, 0x5a}},
+	&ASCIICode{Key: Insert, ASCIICode: []byte{0x1b, 0x5b, 0x02, 0x7e}},
+
+	&ASCIICode{Key: F1, ASCIICode: []byte{0x1b, 0x4f, 0x50}},
+	&ASCIICode{Key: F2, ASCIICode: []byte{0x1b, 0x4f, 0x51}},
+	&ASCIICode{Key: F3, ASCIICode: []byte{0x1b, 0x4f, 0x52}},
+	&ASCIICode{Key: F4, ASCIICode: []byte{0x1b, 0x4f, 0x53}},
+
+	&ASCIICode{Key: F1, ASCIICode: []byte{0x1b, 0x4f, 0x50, 0x41}}, // Linux console
+	&ASCIICode{Key: F2, ASCIICode: []byte{0x1b, 0x5b, 0x5b, 0x42}}, // Linux console
+	&ASCIICode{Key: F3, ASCIICode: []byte{0x1b, 0x5b, 0x5b, 0x43}}, // Linux console
+	&ASCIICode{Key: F4, ASCIICode: []byte{0x1b, 0x5b, 0x5b, 0x44}}, // Linux console
+	&ASCIICode{Key: F5, ASCIICode: []byte{0x1b, 0x5b, 0x5b, 0x45}}, // Linux console
+
+	&ASCIICode{Key: F1, ASCIICode: []byte{0x1b, 0x5b, 0x11, 0x7e}}, // rxvt-unicode
+	&ASCIICode{Key: F2, ASCIICode: []byte{0x1b, 0x5b, 0x12, 0x7e}}, // rxvt-unicode
+	&ASCIICode{Key: F3, ASCIICode: []byte{0x1b, 0x5b, 0x13, 0x7e}}, // rxvt-unicode
+	&ASCIICode{Key: F4, ASCIICode: []byte{0x1b, 0x5b, 0x14, 0x7e}}, // rxvt-unicode
+
+	&ASCIICode{Key: F5, ASCIICode: []byte{0x1b, 0x5b, 0x31, 0x35, 0x7e}},
+	&ASCIICode{Key: F6, ASCIICode: []byte{0x1b, 0x5b, 0x31, 0x37, 0x7e}},
+	&ASCIICode{Key: F7, ASCIICode: []byte{0x1b, 0x5b, 0x31, 0x38, 0x7e}},
+	&ASCIICode{Key: F8, ASCIICode: []byte{0x1b, 0x5b, 0x31, 0x39, 0x7e}},
+	&ASCIICode{Key: F9, ASCIICode: []byte{0x1b, 0x5b, 0x32, 0x30, 0x7e}},
+	&ASCIICode{Key: F10, ASCIICode: []byte{0x1b, 0x5b, 0x32, 0x31, 0x7e}},
+	&ASCIICode{Key: F11, ASCIICode: []byte{0x1b, 0x5b, 0x32, 0x32, 0x7e}},
+	&ASCIICode{Key: F12, ASCIICode: []byte{0x1b, 0x5b, 0x32, 0x34, 0x7e, 0x8}},
+	&ASCIICode{Key: F13, ASCIICode: []byte{0x1b, 0x5b, 0x25, 0x7e}},
+	&ASCIICode{Key: F14, ASCIICode: []byte{0x1b, 0x5b, 0x26, 0x7e}},
+	&ASCIICode{Key: F15, ASCIICode: []byte{0x1b, 0x5b, 0x28, 0x7e}},
+	&ASCIICode{Key: F16, ASCIICode: []byte{0x1b, 0x5b, 0x29, 0x7e}},
+	&ASCIICode{Key: F17, ASCIICode: []byte{0x1b, 0x5b, 0x31, 0x7e}},
+	&ASCIICode{Key: F18, ASCIICode: []byte{0x1b, 0x5b, 0x32, 0x7e}},
+	&ASCIICode{Key: F19, ASCIICode: []byte{0x1b, 0x5b, 0x33, 0x7e}},
+	&ASCIICode{Key: F20, ASCIICode: []byte{0x1b, 0x5b, 0x34, 0x7e}},
+
+	// Xterm
+	&ASCIICode{Key: F13, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x02, 0x50}},
+	&ASCIICode{Key: F14, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x02, 0x51}},
+	// &ASCIICode{Key: F15, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x02, 0x52}},  // Conflicts with CPR response
+	&ASCIICode{Key: F16, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x02, 0x52}},
+	&ASCIICode{Key: F17, ASCIICode: []byte{0x1b, 0x5b, 0x15, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: F18, ASCIICode: []byte{0x1b, 0x5b, 0x17, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: F19, ASCIICode: []byte{0x1b, 0x5b, 0x18, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: F20, ASCIICode: []byte{0x1b, 0x5b, 0x19, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: F21, ASCIICode: []byte{0x1b, 0x5b, 0x20, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: F22, ASCIICode: []byte{0x1b, 0x5b, 0x21, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: F23, ASCIICode: []byte{0x1b, 0x5b, 0x23, 0x3b, 0x02, 0x7e}},
+	&ASCIICode{Key: F24, ASCIICode: []byte{0x1b, 0x5b, 0x24, 0x3b, 0x02, 0x7e}},
+
+	&ASCIICode{Key: ControlUp, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x5a}},
+	&ASCIICode{Key: ControlDown, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x5b}},
+	&ASCIICode{Key: ControlRight, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x5c}},
+	&ASCIICode{Key: ControlLeft, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x3b, 0x5d}},
+
+	&ASCIICode{Key: ShiftUp, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x2a}},
+	&ASCIICode{Key: ShiftDown, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x2b}},
+	&ASCIICode{Key: ShiftRight, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x2c}},
+	&ASCIICode{Key: ShiftLeft, ASCIICode: []byte{0x1b, 0x5b, 0x01, 0x2d}},
+
+	// Tmux sends following keystrokes when control+arrow is pressed, but for
+	// Emacs ansi-term sends the same sequences for normal arrow keys. Consider
+	// it a normal arrow press, because that's more important.
+	&ASCIICode{Key: Up, ASCIICode: []byte{0x1b, 0x4f, 0x41}},
+	&ASCIICode{Key: Down, ASCIICode: []byte{0x1b, 0x4f, 0x42}},
+	&ASCIICode{Key: Right, ASCIICode: []byte{0x1b, 0x4f, 0x43}},
+	&ASCIICode{Key: Left, ASCIICode: []byte{0x1b, 0x4f, 0x44}},
+
+	&ASCIICode{Key: ControlUp, ASCIICode: []byte{0x1b, 0x5b, 0x05, 0x41}},
+	&ASCIICode{Key: ControlDown, ASCIICode: []byte{0x1b, 0x5b, 0x05, 0x42}},
+	&ASCIICode{Key: ControlRight, ASCIICode: []byte{0x1b, 0x5b, 0x05, 0x43}},
+	&ASCIICode{Key: ControlLeft, ASCIICode: []byte{0x1b, 0x5b, 0x05, 0x44}},
+
+	&ASCIICode{Key: ControlRight, ASCIICode: []byte{0x1b, 0x5b, 0x4f, 0x63}}, // rxvt
+	&ASCIICode{Key: ControlLeft, ASCIICode: []byte{0x1b, 0x5b, 0x4f, 0x64}},  // rxvt
+
+	&ASCIICode{Key: Ignore, ASCIICode: []byte{0x1b, 0x5b, 0x45}}, // Xterm
+	&ASCIICode{Key: Ignore, ASCIICode: []byte{0x1b, 0x5b, 0x46}}, // Linux console
+}
diff --git a/prompt/key_string.go b/prompt/key_string.go
new file mode 100644
index 0000000..24780f4
--- /dev/null
+++ b/prompt/key_string.go
@@ -0,0 +1,16 @@
+// Code generated by "stringer -type Key key.go"; DO NOT EDIT
+
+package prompt
+
+import "fmt"
+
+const _Key_name = "EscapeControlAControlBControlCControlDControlEControlFControlGControlHControlIControlJControlKControlLControlMControlNControlOControlPControlQControlRControlSControlTControlUControlVControlWControlXControlYControlZControlSpaceControlBackslashControlSquareCloseControlCircumflexControlUnderscoreControlLeftControlRightControlUpControlDownUpDownRightLeftShiftLeftShiftUpShiftDownShiftRightHomeEndDeleteShiftDeleteControlDeletePageUpPageDownBackTabInsertBackspaceTabEnterF1F2F3F4F5F6F7F8F9F10F11F12F13F14F15F16F17F18F19F20F21F22F23F24AnyCPRResponseVt100MouseEventWindowsMouseEventBracketedPasteIgnore"
+
+var _Key_index = [...]uint16{0, 6, 14, 22, 30, 38, 46, 54, 62, 70, 78, 86, 94, 102, 110, 118, 126, 134, 142, 150, 158, 166, 174, 182, 190, 198, 206, 214, 226, 242, 260, 277, 294, 305, 317, 326, 337, 339, 343, 348, 352, 361, 368, 377, 387, 391, 394, 400, 411, 424, 430, 438, 445, 451, 460, 463, 468, 470, 472, 474, 476, 478, 480, 482, 484, 486, 489, 492, 495, 498, 501, 504, 507, 510, 513, 516, 519, 522, 525, 528, 531, 534, 545, 560, 577, 591, 597}
+
+func (i Key) String() string {
+	if i < 0 || i >= Key(len(_Key_index)-1) {
+		return fmt.Sprintf("Key(%d)", i)
+	}
+	return _Key_name[_Key_index[i]:_Key_index[i+1]]
+}