On Sun, Sep 05, 2021 at 04:20:07PM +0800, ZheNing Hu wrote: > > + case REF_FORMAT_QUICK_OBJECTNAME_REFNAME: > > + printf("%s %s\n", oid_to_hex(oid), refname); > > + return 0; > > + } > > + BUG("unknown ref_format_quick value: %d", format->quick); > > +} > > + > > So as a fast path, we actually avoided format_ref_array_item() when we are using > %(objectname) and %(refname). But the problem is that it’s not very elegant > (using string compare), and it is no optimization for other atoms that > require in-depth > parsing. I remember the "fast path" used by Ævar last time, and it > seems that Junio doesn't > like them. [1][2] Yes, I did say it was "pretty horrible". :) It was mostly meant as a proof-of-concept to see where the time was going, and what was possible. It _could_ be used as a stop-gap while improving the general performance, but it's gross enough that it's probably not a good idea (it's increased maintenance, but also it dis-incentivizes fixing the real problems). -Peff