This series reduces reliance on global states. Mainly there are two such global states in editor.c,

* editor_program: defined in environment.c and populated during config
  parsing, but only used by editor.c via git_editor().

* the_repository: used in git_sequence_editor() to read the sequence.editor
  configuration.

In patch 1/2, localize editor_program to editor.c by introducing a helper that allows git_default_core_config() to continue initializing the value during initial config parsing.

In patch 2/2, remove the remaining use of the_repository in editor.c by passing struct repository through git_sequence_editor() and its callers. With this change, editor.c no longer requires 'USE_THE_REPOSITORY_VARIABLE' and 'environment.h' include.

Shreyansh Paliwal (2):
  editor: make editor_program local to editor.c
  editor: remove the_repository usage

 builtin/var.c        |  2 +-
 editor.c             | 19 ++++++++++++-------
 editor.h             |  6 ++++--
 environment.c        |  5 ++---
 environment.h        |  1 -
 rebase-interactive.c |  2 +-
 6 files changed, 20 insertions(+), 15 deletions(-)

---
Changes in v2:
 - removed 'environment.h' dependency from editor.c as well.

Range-diff against v1:
-:  ---------- > 1:  6f8b82fed5 editor: make editor_program local to editor.c
1:  f9ef18b77a ! 2:  5b858c7e98 editor: remove the_repository usage
    @@ Commit message
           local repository instance, so pass it down the caller.

         With no remaining global states in editor.c remove '#define
    -    USE_THE_REPOSITORY_VARIABLE'. This removes another dependency on
    -    the_repository and keeps editor code consistent with the ongoing effort to
    -    reduce global state.
    +    USE_THE_REPOSITORY_VARIABLE' and drop the dependency on 'environment.h'.
    +    This removes another dependency on the_repository and keeps editor code
    +    consistent with the ongoing effort to reduce global state.

         Signed-off-by: Shreyansh Paliwal <shreyanshpaliwalcmsmn@gmail.com>

    @@ editor.c
      #include "git-compat-util.h"
      #include "abspath.h"
      #include "advice.h"
    + #include "config.h"
    + #include "editor.h"
    +-#include "environment.h"
    + #include "gettext.h"
    + #include "pager.h"
    + #include "path.h"
     @@ editor.c: const char *git_editor(void)
      	return editor;
      }
--
2.53.0