Append newline to autocomplete input if it's missing (fixes #303) (#304)

* append newline to autocomplete input if it's missing

* always append newline

* Update complete.go

---------

Co-authored-by: Anton Medvedev <anton@medv.io>

internal/complete/complete.go

@@ -139,6 +139,8 @@ func doComplete(compLine string, compWord string) {
 			return
 		}
 
+		input = append(input, '\n')
+
 		// If input is bigger than 100MB, skip completion.
 		if len(input) > 100*1024*1024 {
 			return