convert txt file with mixed spaces/tabs to tabs only (where possible) [closed]

Question

I have some source code file which has mixed tabs/spaces and I want to convert it to a file where it has automatically replaced all indentation spaces by tabs for a given tab space length (i.e. for example tab = 2 spaces).

Any easy solution (with common Unix tools, MacOSX, bash or zsh)? Some sed script or Python command or so?

Thanks, Albert

Answer 1

Ok, none of the given solutions satisfied me, so I coded it myself. :)

See here:

• http://github.com/albertz/helpers/blob/master/indent-spacestotabs.py
• http://github.com/albertz/helpers/blob/master/indent-tabtospaces.py