+ // Do a bit of sanity checking and warn user if we think that
+ // their regexp is "strange". User probably confused about shell
+ // glob(3) syntax versus regular expression syntax regexp(7).
+ if (arg[(val = strspn(arg, "0123456789/.-+*|()?^$[]SLCOcnr"))])
+ PrintOut(LOG_INFO, "File %s line %d (drive %s): warning, character %d (%c) looks odd in extended regular expression %s\n",
+ configfile, lineno, name, val+1, arg[val], arg);