Unmerged entries have the following format; the first character is
a "u" to distinguish from ordinary changed entries.
- u <xy> <sub> <m1> <m2> <m3> <mW> <h1> <h2> <h3> <path>
+ u <XY> <sub> <m1> <m2> <m3> <mW> <h1> <h2> <h3> <path>
....
Field Meaning