Hi everyone,

This patch series continues the ongoing libification effort by migrating
a batch of global configuration variables into struct repo_config_values.

What does this series do:

infrastructure & strings (commits 1-6):
Introduce 'repo_config_values_clear()' to manage the lifecycle
of heap-allocated configuration strings. This infrastructure is utilized
to migrate string variables, including 'excludes_file', 'apply' whitespace
configs, and external programs including 'editor', 'pager', 'askpass'.

enums (commits 7-9):
Migrate enumerations 'push_default', 'autorebase', and
'object_creation_mode'. Care was taken to make these types available
to the configuration structure without triggering circular header
dependencies.

edit comment (commit 10):
Adjust the comment for config_values_private_ in repository.h.

RFC:

Commit 3~5. Is it really necessary to migrate _program variables?
https://lore.kernel.org/git/8e657184-ee0b-453a-9f2d-a98080d3582e@gmail.com/ (local)

Commit 6~9. Previous related discussions on 'git_branch_track'.
https://lore.kernel.org/git/CAD=f0L-mPX+KECUjXk-WBzEbTP7wCa8sB56GySQT0yh9mfUOWw@mail.gmail.com/ (local)

Note:

Since a new getter 'repo_excludes_file()' is introduced, as previously
promised, once it is finally merged into 'master', there will be a patch to
update and squash the comments.

Similarly, I've noticed that the classification and sorting of variables in
'repo_config_values' don't seem to be correct. There will also be a patch
to fix this, and I think it will form a commit series along with the comment
patch?

Changes since v10:

 - use repo_config_values *cfg to avoid multiple calls to
 repo_config_values() and avoid overly long lines.

 - drop the extern declarations for askpass_program.

 - in the commit message of pager_program migration, mention that the
 new assertion is fine since current callers pass the_repository only. 

 - add FREE_AND_NULL()s before repo_config_get_strings() calls.

 - create a new commit to adjust the comment for config_values_private_
 since it was no longer true.

Special thanks to Pablo and Junio!

Tian Yuchen (10):
  repository: introduce repo_config_values_clear()
  environment: move excludes_file into repo_config_values
  environment: move editor_program into repo_config_values
  environment: move pager_program into repo_config_values
  environment: move askpass_program into repo_config_values
  environment: migrate apply_default_whitespace and
    apply_default_ignorewhitespace
  environment: move push_default into repo_config_values
  environment: move autorebase into repo_config_values
  environment: move object_creation_mode into repo_config_values
  repository: adjust the comment of config_values_private_

 apply.c        | 28 ++++++++++++------
 branch.c       |  2 +-
 builtin/push.c | 10 ++++---
 dir.c          |  4 +--
 editor.c       |  4 +--
 environment.c  | 76 ++++++++++++++++++++++++++++++++-----------------
 environment.h  | 77 ++++++++++++++++++++++++++++++--------------------
 object-file.c  |  3 +-
 pager.c        | 32 +++++++++++++++------
 prompt.c       |  3 +-
 remote.c       |  2 +-
 repository.c   |  1 +
 repository.h   |  2 +-
 13 files changed, 158 insertions(+), 86 deletions(-)

-- 
2.43.0