Tab vs Spaces War
Noun · Hacker Culture
Definitions
A perennial style argument over whether indentation in source code should use tab characters or spaces. The debate is culturally famous because it produces outsized passion over a mostly solvable formatting issue.
In plain English: The endless argument over whether code indentation should use tabs or spaces.
Example: "The PR was fine technically, but the comments turned into a tab vs spaces war by lunchtime."