problem           129 maint/gnulib/lib/argmatch.c argmatch_invalid (const char *context, const char *value, ptrdiff_t problem)
problem           131 maint/gnulib/lib/argmatch.c   char const *format = (problem == -1
problem            67 maint/gnulib/lib/argmatch.h                        ptrdiff_t problem);