Am 09.10.21 um 04:36 schrieb Jeff King: > On Sat, Oct 09, 2021 at 02:58:10AM +0200, Ævar Arnfjörð Bjarmason wrote: > >> I ran into this while testing the grep coloring patch[1] (but it's >> unrelated). Before this commit e.g.: >> >> LC_ALL=C ~/g/git/git -P -c i18n.commitEncoding=ascii log --author=Ævar -100|wc -l >> 28333 >> >> So ~3k lines for my last 100 commits, but then: >> >> $ LC_ALL=C ~/g/git/git -P -c i18n.commitEncoding=ascii log --author=Ævar -100 2>&1|grep -c ^warning >> 299 >> >> At first I thought it was spewing warnings for every failed re-encoded >> line in some cases, because I get hundreds at a time sometimes, but it's >> because stderr and stdout I/O buffering is different (a common >> case). Adding a "fflush(stderr)" "fixes" that. > > I don't think the buffering is the issue. By default stderr flushes on > lines, and we flush commits after showing them. If you take away "-P" > (or look at the combined 2>&1 output in order), you'll see that they are > grouped. > > Now one thing you might notice is that there may be multiple warnings > between output commits. But that's because we really are re-encoding > each of those intermediate commits to do your --author grep. And if that > re-encoding fails, we may well be producing the wrong output, because > the matching won't be correct (in your case, presumably the correct > output should be _nothing_, because Æ is not an ascii character). I don't understand why i18n.commitEncoding plays a role here. Isn't it an instruction "when you make a commit, mark the commit message having this encoding". But grep does not make a commit. If this were i18n.logOuputEncoding it would make much more sense. Have I misunderstood the meaning of the two options? -- Hannes
