Tabs vs Spaces (yes, again!)

PIG DISGUSTING

{
    int a    = 3;
    int ab    = 4;
    // ...
}


{
   int a  = 3;
   int ab = 4;
}

BEAUTIFUL AND NICE

{
    int a  = 3;
    int ab = 4;
}

Style 1 (all tabs) will look fucked up vertical alignment with different tab widths. Style 2 (all spaces) will look weird to those used to different tab widths. Style 3 (tabs to indent, spaces to align), on the other hand, is made of epic win because it allows one to change the tab width without losing the nice vertical alignment, and those who really like all spaces can easily have their editor auto-convert tabs to spaces.

Style 3 > Style 2 > Style 1. If you use Style 1, you're an asshole.

Using tabs to indent and assuming you can just change the tab width COMPLETELY ignores the right margin. Switching from code that assumes 4 spaces per tab to normal 8-space tabs results in a lot of pain-in-the-ass horizontal scrolling and/or word wrap, depending on editor.