Re: [PATCH 3/3] abbrev: auto size the default abbreviation

On Mon, Oct 3, 2016 at 3:27 PM, Jeff King [off-list ref] wrote:

+       if (len < 0) {
+               unsigned long count = approximate_object_count();
+               len = (msb(count) + 1) / 2;
+               if (len < 0)
+                       len = FALLBACK_DEFAULT_ABBREV;
+       }

that second "if (len < 0)" should probably be testing against
FALLBACK_DEFAULT_ABBREV, not zero. Or at the very least
MINIMUM_ABBREV. Because a two-character abbreviation won't even be
recognized, even if the git project is very small indeed.

            Linus