isgraph
int isgraph(int);
if (!isgraph(*src) && *src != 0x20)
putchar(isgraph(c) ? c : '.');
*p++ = (isgraph(c) ? c : '.');
putchar(isgraph(c) ? c : '.');
#ifdef isgraph
#define ISGRAPH(c) (isascii (c) && isgraph (c))
if (isgraph(c)) {
#define iscgraph(c) isgraph(c)
rv = isgraph(c);
BUILD_CHARCLASS_LOOP (isgraph);
if (isgraph(i))