twitter/bootstrap — comment on commit 5ad5dde1e24f668cf9b720dd59fc2a7d4808c0b3
File:  line 0
By lotyrin:

Seeing styles like these makes me cry, especially when I've already added a preprocessor. It's really too bad LESS doesn't solve this.

As far as workflow, I don't see myself deciding to change number of columns so often that invoking an external builder would be more of a headache than the one cleaning this mess fixes. But that's just N=1.