line1            2139 src/diffviewer/ydiff.c     int line1 = 0, line2 = 0;
line1            2155 src/diffviewer/ydiff.c     while (fgets (buf, sizeof (buf), f0) != NULL && line1 < from1 - 1)
line1            2157 src/diffviewer/ydiff.c         line1++;
line1            2168 src/diffviewer/ydiff.c         line1++;
line1            2169 src/diffviewer/ydiff.c         if (line1 > to1)