Thanks. Well, I must say that is all rather counter-intuitive. I never dreamed that the amount of context I select would actually affect the diff itself and how it is computed. But if you say so, I guess that is how it works. Todd
On 8 December 2014 at 16:46, Eric Blake <[email protected]> wrote: > On 12/08/2014 03:27 PM, Todd Shandelman wrote: > > With -U1 and -U2 , the --ignore-matching-lines='Id' argument suppresses > > display of the difference between the 'Id' lines, as expected. > > At that (small) level of context, the hunk containing the 'Id' line is > separate from the remaining hunks, so the hunk is omitted. > > > > > But with -U3, the diff of the 'Id' lines reappears, in spite of the > > --ignore-matching-lines='Id' > > argument. > > > > Why is that? > > As soon as you have enough context, the hunk for the 'Id' line is the > SAME hunk as the rest of the changes. --ignore-matching-lines omits a > hunk only if the entire hunk matches the regex; but as soon as you have > other changes, then the entire hunk is output verbatim. > > --ignore-matching-lines does NOT ignore individual lines within a hunk, > but only a hunk at a time. > > -- > Eric Blake eblake redhat com +1-919-301-3266 > Libvirt virtualization library http://libvirt.org > >
