As known, there is a "smart_indent" option in Sublime Text. However I have recently found this intent option un-smart when I wanted to change the style of indentation.

E.g., when I type a

for(int i=1;i<=n;i++)
    cin>>a[i];

I'd prefer

for(int i=1;i<=n;i++)cin>>a[i];

But the "smart_indent" option would do this↓ when I change into my preference of the sentence:

for(int i=1;i<=n;i++)cin>>a[i];
    int x;

I mean it would still insert a tab when I press "Enter". Worse yet, if I backspaced that tab and finish the second line and press enter again, the third line would backspace a tab automatically.

That's really annoying isn't it, so I switched off the smart_indent option, wishing it would no longer produce that tab.

However, things get worse. Nothing would happen when I enter the second line, but a tab would still be backspaced on the third line!

Confused, I came here for advice: What should I do?