Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/st.c b/st.c
|index 79ee9ba..5170cd4 100644
|--- a/st.c
|+++ b/st.c
--------------------------
Patching file st.c using Plan A...
Hunk #1 failed at 36.
Hunk #2 failed at 44.
Hunk #3 succeeded at 67 (offset -4 lines).
Hunk #4 failed at 134.
Hunk #5 failed at 196.
Hunk #6 succeeded at 241 (offset -3 lines).
Hunk #7 failed at 444.
Hunk #8 succeeded at 522 (offset -4 lines).
Hunk #9 succeeded at 554 (offset -3 lines).
Hunk #10 succeeded at 604 (offset -4 lines).
Hunk #11 failed at 615.
Hunk #12 failed at 638.
Hunk #13 failed at 656.
Hunk #14 succeeded at 695 (offset -3 lines).
Hunk #15 succeeded at 706 (offset -4 lines).
Hunk #16 failed at 915.
Hunk #17 succeeded at 1050 (offset -6 lines).
Hunk #18 succeeded at 1062 (offset -4 lines).
Hunk #19 succeeded at 1078 (offset -6 lines).
Hunk #20 failed at 1195.
Hunk #21 failed at 1218.
Hunk #22 failed at 1339.
Hunk #23 failed at 1429.
Hunk #24 succeeded at 1639 (offset -56 lines).
Hunk #25 succeeded at 1750 (offset -6 lines).
Hunk #26 succeeded at 1763 (offset -56 lines).
Hunk #27 succeeded at 1911 (offset -6 lines).
Hunk #28 failed at 1942.
Hunk #29 succeeded at 1923 (offset -56 lines).
Hunk #30 succeeded at 1999 (offset -6 lines).
Hunk #31 succeeded at 2244 (offset -56 lines).
Hunk #32 failed at 2466.
Hunk #33 failed at 2479.
Hunk #34 succeeded at 2669 (offset -6 lines).
Hunk #35 succeeded at 2655 (offset -56 lines).
Hunk #36 failed at 2693.
17 out of 36 hunks failed
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/st.h b/st.h
|index 818a6f8..514ec08 100644
|--- a/st.h
|+++ b/st.h
--------------------------
Patching file st.h using Plan A...
Hunk #1 succeeded at 22.
Hunk #2 succeeded at 90 (offset -2 lines).
done