I read this about shiftwidth option on Google: To change the number of space characters inserted for indentation, use the 'shiftwidth' option.
Ok Ok, but what's that more exactly? How can I try this to see what really happens? I created a new C file then added an IF confition, but nothing happens during identation:
if (a > 0) { nothing happens here }
Thank you!
:h shiftwidth
.