c0                443 src/viewer/internal.h     int c0, c1, c2;
c0                450 src/viewer/internal.h     if (!mcview_get_byte_indexed (view, offset, 0, &c0) || !g_ascii_isprint (c0))
c0                456 src/viewer/internal.h     return (c0 == c2 || c0 == '_' || (c0 == '+' && c2 == 'o'));