Herp derp. It's actually constant-time append.
Herp derp. It's actually constant-time append.

Change-Id: I16dfbdec88c14a12214fbe2efcea3f693bfdfc11
Reviewed-on: https://code-review.googlesource.com/c/re2/+/57390
Reviewed-by: Paul Wankadia <62d4e38bb1380f055ec4b899baa75e52af09c5f7@google.com>

google/re2,google/re2,google/re2,google/re2,google/re2