My husband’s Levi’s jeans had a front pocket failure: the inside pocket fabric ripped where it was worn from use. The jeans themselves are still in good condition, so to mend the pocket I wove thread across the rip to strengthen the weak fabric as well as to close the hole. Using a whip stitch wouldn’t last long because the edges of the fabric are worn and are more likely to rip again. By weaving across the opening, the new thread extends into sound fabric, and it should hold longer.