googled "gnu cvs utf diff" and found this http://stackoverflow.com/questions/778291/how-do-i-diff-utf-16-files-with-gnu-diff
On Wed, May 15, 2013 at 2:03 PM, Stuart Henderson <st...@openbsd.org> wrote: > On 2013/05/15 11:53, Stuart Henderson wrote: >> On 2013/05/15 10:43, Alexey E. Suslikov wrote: >> > Mark Kettenis <mark.kettenis <at> xs4all.nl> writes: >> > >> > > > Try this >> > > > >> > http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pci/drm/i915/i915_drv.c.diff?r1=1.26;r2=1.27;f=h >> > > > >> > > > and, for instance, this >> > > > >> > http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pci/drm/i915/i915_dma.c.diff?r1=1.6;r2=1.7;f=h >> > > > >> > > > Former says "No viewable change". I think it isn't normal. Am I wrong? >> > > >> > > Yes that's very annoying. I suspect cvsweb has problems with the UTF8 >> > > characters in the copyright header. >> > >> > cvsweb operates on individual diff chunks while preparing >> > viewable output, right? >> > >> > if so, and you are right about UTF8, only one of these chunks >> > is a showstopper. >> > >> > maybe cvsweb may say "No viewable change" for a problematic >> > chunk only, instead of completely freaking out. >> > >> >> it's not cvsweb. >> >> $ rcsdiff -u -r1.26 -r1.27 /cvs/src/sys/dev/pci/drm/i915/i915_drv.c,v >> =================================================================== >> RCS file: /cvs/src/sys/dev/pci/drm/i915/i915_drv.c,v >> retrieving revision 1.26 >> retrieving revision 1.27 >> diff -u -r1.26 -r1.27 >> > > ...and yes, it is due to the UTF8 characters: replacing them in the ,v > file lets it work. >
