Add backspace (not tested)

genkeys.go

@@ -55,6 +55,8 @@ func init() {
 		0x27: "Right",
 		0x26: "Up",
 		0x1B: "Escape",
+		// The keys not listed in the Mozilla site:
+		0x08: "Backspace",
 	}
 	// ASCII: 0 - 9
 	for c := '0'; c <= '9'; c++ {

internal/ui/keys.go

@@ -53,6 +53,7 @@ const (
 	KeyX
 	KeyY
 	KeyZ
+	KeyBackspace
 	KeyCapsLock
 	KeyComma
 	KeyDelete

internal/ui/keys_glfw.go

@@ -57,6 +57,7 @@ var glfwKeyCodeToKey = map[glfw.Key]Key{
 	glfw.KeyX:           KeyX,
 	glfw.KeyY:           KeyY,
 	glfw.KeyZ:           KeyZ,
+	glfw.KeyBackspace:   KeyBackspace,
 	glfw.KeyCapsLock:    KeyCapsLock,
 	glfw.KeyComma:       KeyComma,
 	glfw.KeyDelete:      KeyDelete,

internal/ui/keys_js.go

@@ -17,6 +17,7 @@
 package ui
 
 var keyCodeToKey = map[int]Key{
+	8:   KeyBackspace,
 	9:   KeyTab,
 	13:  KeyEnter,
 	16:  KeyLeftShift,

keys.go

@@ -59,6 +59,7 @@ const (
 	KeyX           = Key(ui.KeyX)
 	KeyY           = Key(ui.KeyY)
 	KeyZ           = Key(ui.KeyZ)
+	KeyBackspace   = Key(ui.KeyBackspace)
 	KeyCapsLock    = Key(ui.KeyCapsLock)
 	KeyComma       = Key(ui.KeyComma)
 	KeyDelete      = Key(ui.KeyDelete)