fix https://github.com/c-bata/go-prompt/issues/63

key_bind_func.go

@@ -0,0 +1,44 @@
+package prompt
+
+// CursorLineEnd Go to the End of the line
+func GoLineEnd(buf *Buffer) {
+	x := []rune(buf.Document().TextAfterCursor())
+	buf.CursorRight(len(x))
+}
+
+// GoLineBeginning Go to the beginning of the line
+func GoLineBeginning(buf *Buffer) {
+	x := []rune(buf.Document().TextBeforeCursor())
+	buf.CursorLeft(len(x))
+}
+
+// DeleteChar Delete character under the cursor
+func DeleteChar(buf *Buffer) {
+	buf.Delete(1)
+}
+
+// DeleteBeforeChar Go to Backspace
+func DeleteBeforeChar(buf *Buffer) {
+	buf.DeleteBeforeCursor(1)
+}
+
+// GoRightChar Forward one character
+func GoRightChar(buf *Buffer) {
+	buf.CursorRight(1)
+}
+
+// GoLeftChar Backward one character
+func GoLeftChar(buf *Buffer) {
+	buf.CursorLeft(1)
+}
+
+// GoRightWord Forward one word
+func GoRightWord(buf *Buffer) {
+	// fmt.Printf("%#v\n", buf.Document().FindEndOfCurrentWordWithSpace())
+	buf.CursorRight(buf.Document().FindEndOfCurrentWordWithSpace())
+}
+
+// GoLeftWord Backward one word
+func GoLeftWord(buf *Buffer) {
+	buf.CursorLeft(len([]rune(buf.Document().TextBeforeCursor())) - buf.Document().FindStartOfPreviousWordWithSpace())
+}