This patch series implements an improvment of the strbuf API, allowing
strbuf to use preallocated memory. This makes strbuf fit to be used
in performance-critical operations.

The first patch is simply a preparatory work, adding tests for
existing strbuf implementation.
Most of the work is made in the second patch: handle pre-allocated
memory, extend the API, document it and test it.

As said in the second commit, the idea comes from Michael Haggerty.

William Duclot (2):
    strbuf: add tests
    strbuf: allow to use preallocated memory

Makefile               |   1 +
strbuf.c               |  68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
strbuf.h               |  31 +++++++++++++++++++++++++++++--
t/helper/test-strbuf.c | 111 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
t/t0082-strbuf.sh      |  47 +++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 251 insertions(+), 7 deletions(-)