Automatically detect and use indentation style of current file

Question

I work on several projects that are using different indentation levels (2 spaces / 4 spaces / tabs...).

Is it possible to make Vim automatically detect the indentation style of the current file and use it, that's-to-say, can the Tab key be made "intelligent" indenting the "right way" ?

Answer 1

Vim doesn't do that by default but Ingo Karkat's IndentConsistencyCop does.