A bit overly complicated. I have to do such things pretty often, esp. with cygwin codebases and sloppy maintainers. find . -name *.py -exec expand -t4 '{}' \;

A bit overly complicated. I have to do such things pretty often, esp. with cygwin codebases and sloppy maintainers. find . -name *.py -exec expand -t4 '{}' \; git commit -am'chore: expand all py tabs to spaces' and this for all branches. Usually also clang-format and dos2unix. No need for .gitattribute filters. And no magic rewrites, just a commit.