commit b4803c47af4df55f07eda93686e251d9903bc4bc
author Marcel van Lohuizen <mpvl@golang.org> Tue Oct 04 15:24:05 2016 +0200
committer Marcel van Lohuizen <mpvl@golang.org> Thu Oct 06 13:39:19 2016 +0000
tree 7acfb096d718a950f4fe98cb510dca80fd0baa1f
parent 264685067571ea37cfb4cf4f4af92fbc17052f23

cases: prevent a bunch of unnecessary allocations

- processing options no longer allocates (res escaped)
- special-cased lower casing without final sigma
- use InheritanceMatcher. This is both more accurate for
   this purpose and it prevents an allocation or two

As a result, using upper casing or lower casing without
final sigma is now completely alloc free. Both of these
cases are also reentrant.

Change-Id: Ic6d5d0d2dd48ce20069ab897d76dd7d3ea0488a7
Reviewed-on: https://go-review.googlesource.com/30275
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Nigel Tao <nigeltao@golang.org>