line2            2068 src/diffviewer/ydiff.c     int line1, line2;
line2            2085 src/diffviewer/ydiff.c     for (line2 = 0; fgets (buf, sizeof (buf), f1) != NULL && line2 <= to2;)
line2            2087 src/diffviewer/ydiff.c         line2++;
line2            2088 src/diffviewer/ydiff.c         if (line2 >= from2)