[PATCH 0/3] Generalized "string function" syntax

I mentioned an idea to enhance the pretty=format language with a string
function syntax that people can extend by adding new functions in one of
the "What's cooking" messages earlier.  The general syntax would be like

    %[function(args...)any string here%]

where "any string here" part would have the usual pretty=format strings.
E.g.  git show -s --format='%{w(72,8,4)%s%+b%]' should give you a line
wrapped commit log message if w(width,in1,in2) is such a function.

This series is a proof of concept, as I didn't actually plug the
"wrapping" code into it; it would be fairly straightforward to integrate
the logic Dscho made strbuf capable in js/log-wrap series (queued in 'pu')
to finish this.

Junio C Hamano (3):
  format_commit_message(): fix function signature
  strbuf_nested_expand(): allow expansion to interrupt in the middle
  Add proof-of-concept %[w(width,in1,in2)<<any-string>>%]
    implementation

 commit.h |    2 +-
 pretty.c |   86 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 strbuf.c |   23 +++++++++++++---
 strbuf.h |    3 +-
 4 files changed, 107 insertions(+), 7 deletions(-)