return;
if (RebaseTodoLine.Action.SQUASH.equals(steps.get(0).getAction())
|| RebaseTodoLine.Action.FIXUP.equals(steps.get(0).getAction())) {
if (!rebaseState.getFile(DONE).exists()
|| rebaseState.readFile(DONE).trim().length() == 0) {
throw new InvalidRebaseStepException(MessageFormat.format(
JGitText.get().cannotSquashFixupWithoutPreviousCommit,
steps.get(0).getAction().name()));
}
}