[tz] indentation in localtime.c

Hi, I had a look at tzcode/localtime.c today, and the indentation looks like a mess. It's a wild mixture between 2 spaces, 4 spaces, 1 tab, 2 tabs, and I couldn't see any pattern or reasonable rule set that would account for the whole file. Is this apparent mess intentional? If so, what is the history and rationale behind it? If not, who can fix this? Roland