Eric Sunshine <sunshine@xxxxxxxxxxxxxx> writes: > On Tue, Mar 6, 2018 at 6:53 AM, Jun Wu <quark@xxxxxx> wrote: >> xdiff-interface trims common suffix if ctxlen is 0. Teach it to also >> trim common prefix, and trim less lines if ctxlen > 0. So it can benefit >> the default diff command, as seen by profiling: [...] I vaguely recall that we have tried this in the distant past, found that it produced incorrect result, and that is why we limit the optimization for no-context case. Does anybody have an archive reference?
