I solve this problem at the language level. Instead of using an external formatter, indentation is enforced by the compiler and requires tabs. Significant inden

I solve this problem at the language level. Instead of using an external formatter, indentation is enforced by the compiler and requires tabs. Significant indentation is used for multiline functions rather than block delimiters. On a given line, spaces may be used for alignment purposes but only after the first non whitespace token. This is no harder to parse than arbitrary whitespace between tokens and guarantees a uniform format for any valid program in the language. I know not everyone will agree with me, but I think defining whitespace in a language as essentially [ \t\n] between any token is a language design mistake.