• Years ago there was no way to share IDE settings between developers.

    You ended up with some developers choosing a tab width of 2 spaces, some choosing 4 spaces and as there was no linting enforcement some people using 2-4 spaces depending on their IDE settings.

    This resulted in an unreadable mess as stuff was idented to all sorts of random levels.

    It doesn’t matter if you use tabs or spaces as long as only one type is consistently used within a project.

    Spaces tends to win because inevitably there are times you need to use spaces and so its difficult to ensure a project only uses tabs for identation.

    IDE’s support converting tabs into spaces based on tab width and code formatting will ensure correct indentation. You can now have centralised IDE settings so everyone gets the same setup.

    Honestly 99% of people don’t care about formatting (they only care when consistency isn’t enforced and code is hard to read), there is always one person who wants a 60 charracter line width or only tabs or double new lined parathensis. Who then sucks up huge amounts of the team time arguing their thing is a must while they code in emacs, unlike the rest of the team using an actual ide.