isblank
int isblank(int);
{ "blank", 5, isblank },
mem = isblank(i);
#ifndef isblank
while (isblank(*start))
while (isblank(*(end - 1)) && end > start) {
if (ch == 'r' && gotNL && isblank((int)*cursor))
using std::isblank;
extern int isblank(int);
while (isblank((*opt)[len-1]))
while (isblank(*pos)) /* ignore leading blanks */
#define iswblank(c) isblank(c)