xfgets
if (!(line = xfgets(file)))
if (!(line1 = xfgets(file1)))
if (!(add = xfgets(file2)))
if (!(add = xfgets(file2)))
if (!(line1 = xfgets(file1)))
while ((s1 = xfgets(file1)))
s1 = xfgets(file1);
s2 = xfgets(file2);
for (; (cmd = xfgets(stdin)); free(cmd)) {
static char *xfgets(FILE *);
if (!(line = xfgets(diffpipe)))
if (!(s1 = xfgets(file1)))
if (!(s2 = xfgets(file2)))
if (!(s = xfgets(file1)))
if (!(s = xfgets(file2)))
if (!(line = xfgets(diffpipe)))