Hello, I tested the snapshot 2.22.29-83df mentioned by Jim Meyering. On Mac OS X 10.11.3, I found some compiler warnings. I'm not a programmer, so I don't know whether they're harmless or not. I thought I'd report them here. I pasted them below.
-Charles ========8<====================== CC fpending.o error.c:386:12: warning: data argument not used by format string [-Wformat-extra-args] file_name, line_number); ^ CC fstatat.o 1 warning generated. ========8<====================== CC strstr.o In file included from regex.c:70: ./regex_internal.c:1392:11: warning: comparison of unsigned expression < 0 is always false [-Wtautological-compare] if (idx < 0 || idx >= set->nelem) ~~~ ^ ~