Video: C Programming on System 6 - Porting OpenBSD's diff(1)

I've wanted a simple revision control system on my Mac since starting development of my IMAP client. Porting a large system like Git or even CVS would be overkill (and very slow), but maybe something small like OpenBSD's RCS implementation would suffice. For now, just having a diff utility would be helpful so in this video I port the guts of OpenBSD's diff(1) and show it generating a unified diff between revisions of a C file.

Video notes:

• OpenBSD diff(1) source code
• KAHL as the THINK C file creator type refers to Michael Kahl, the original THINK C author (thanks to Theo Buehler for letting me know)
• Phil Collins - stdio
• My strdup code in xstrdup should malloc(len + 1)
• tinkerBOY PS/2 keyboard to Mac converter

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