Add truncate functions, which are like trim(length() - n), but more idiomatic and less prone to mistakes.  They truncate BufferSegments and Buffers to the requested length.
Add truncate functions, which are like trim(length() - n), but more idiomatic
and less prone to mistakes.  They truncate BufferSegments and Buffers to the
requested length.


wanproxy/wanproxy,wanproxy/wanproxy,wanproxy/wanproxy