[PATCH v2 0/4] config-parse: create config parsing library

I'll be taking over this series from Glen (thank you for the work so far).

Here's what I see as the current open questions:
- Do we need a cleanup of return values in config.c? If so, does it need
  to be part of this series?
- Are we OK leaving the include machinery in config.c?
- If we expect non-Git-CLI projects to use config-parse as a library,
  should we provide alternative error-handling callbacks for (assumed)
  use cases, even if they won't be directly used in the Git project?
  (I lean to "No", but I want to make sure the option is considered.)
- Does this series need to include the config-parse.c:do_event()
  refactor Jonathan Tan mentioned in [1]?

[1]: https://lore.kernel.org/git/20230804213457.1174493-1-jonathantanmy@google.com/

Changes since v1.5:
- Dropped patch 1/5: config: return positive from git_config_parse_key()

Glen Choo (4):
  config: split out config_parse_options
  config: report config parse errors using cb
  config.c: accept config_parse_options in git_config_from_stdin
  config-parse: split library out of config.[c|h]

 Makefile           |   1 +
 builtin/config.c   |   4 +-
 bundle-uri.c       |   4 +-
 config-parse.c     | 561 ++++++++++++++++++++++++++++++++++++++
 config-parse.h     | 155 +++++++++++
 config.c           | 655 ++++-----------------------------------------
 config.h           | 134 +---------
 fsck.c             |   4 +-
 submodule-config.c |   9 +-
 9 files changed, 795 insertions(+), 732 deletions(-)
 create mode 100644 config-parse.c
 create mode 100644 config-parse.h

Range-diff against v1: 1: 9924481630 < -: ---------- config: return positive from git_config_parse_key() -: ---------- > 1: 5c676fbac3 config: split out config_parse_options -: ---------- > 2: cb92a1f2e3 config: report config parse errors using cb -: ---------- > 3: e034d0780c config.c: accept config_parse_options in git_config_from_stdin -: ---------- > 4: 74c5dcd5a2 config-parse: split library out of config.[c|h]

base-commit: aa9166bcc0ba654fc21f198a30647ec087f733ed