run-command API users: use "env" not "env_array" in comments & names

Follow-up on a preceding commit which changed all references to the
"env_array" when referring to the "struct child_process" member. These
changes are all unnecessary for the compiler, but help the code's
human readers.

All the comments that referred to "env_array" have now been updated,
as well as function names and variables that had "env_array" in their
name, they now refer to "env".

In addition the "out" name for the submodule.h prototype was
inconsistent with the function definition's use of "env_array" in
submodule.c. Both of them use "env" now.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/submodule--helper.c

@@ -513,7 +513,7 @@ static void runcommand_in_submodule_cb(const struct cache_entry *list_item,
 		 * on windows. And since environment variables are
 		 * case-insensitive in windows, it interferes with the
 		 * existing PATH variable. Hence, to avoid that, we expose
-		 * path via the args strvec and not via env_array.
+		 * path via the args strvec and not via env.
 		 */
 		sq_quote_buf(&sb, path);
 		strvec_pushf(&cp.args, "path=%s; %s",

run-command.c

@@ -1816,16 +1816,16 @@ int run_auto_maintenance(int quiet)
 	return run_command(&maint);
 }
 
-void prepare_other_repo_env(struct strvec *env_array, const char *new_git_dir)
+void prepare_other_repo_env(struct strvec *env, const char *new_git_dir)
 {
 	const char * const *var;
 
 	for (var = local_repo_env; *var; var++) {
 		if (strcmp(*var, CONFIG_DATA_ENVIRONMENT) &&
 		    strcmp(*var, CONFIG_COUNT_ENVIRONMENT))
-			strvec_push(env_array, *var);
+			strvec_push(env, *var);
 	}
-	strvec_pushf(env_array, "%s=%s", GIT_DIR_ENVIRONMENT, new_git_dir);
+	strvec_pushf(env, "%s=%s", GIT_DIR_ENVIRONMENT, new_git_dir);
 }
 
 enum start_bg_result start_bg_command(struct child_process *cmd,

run-command.h

@@ -58,7 +58,7 @@ struct child_process {
 	struct strvec args;
 
 	/**
-	 * Like .args the .env_array is a `struct strvec'.
+	 * Like .args the .env is a `struct strvec'.
 	 *
 	 * To modify the environment of the sub-process, specify an array of
 	 * environment settings. Each string in the array manipulates the
@@ -70,7 +70,7 @@ struct child_process {
 	 * - If the string does not contain '=', it names an environment
 	 *   variable that will be removed from the child process's environment.
 	 *
-	 * The memory in .env_array will be cleaned up automatically during
+	 * The memory in .env will be cleaned up automatically during
 	 * `finish_command` (or during `start_command` when it is unsuccessful).
 	 */
 	struct strvec env;
@@ -480,14 +480,14 @@ int run_processes_parallel_tr2(int n, get_next_task_fn, start_failure_fn,
 			       const char *tr2_category, const char *tr2_label);
 
 /**
- * Convenience function which prepares env_array for a command to be run in a
- * new repo. This adds all GIT_* environment variables to env_array with the
+ * Convenience function which prepares env for a command to be run in a
+ * new repo. This adds all GIT_* environment variables to env with the
  * exception of GIT_CONFIG_PARAMETERS and GIT_CONFIG_COUNT (which cause the
  * corresponding environment variables to be unset in the subprocess) and adds
  * an environment variable pointing to new_git_dir. See local_repo_env in
  * cache.h for more information.
  */
-void prepare_other_repo_env(struct strvec *env_array, const char *new_git_dir);
+void prepare_other_repo_env(struct strvec *env, const char *new_git_dir);
 
 /**
  * Possible return values for start_bg_command().

sequencer.c

@@ -919,7 +919,7 @@ static char *get_author(const char *message)
 	return NULL;
 }
 
-static const char *author_date_from_env_array(const struct strvec *env)
+static const char *author_date_from_env(const struct strvec *env)
 {
 	int i;
 	const char *date;
@@ -1011,7 +1011,7 @@ static int run_git_commit(const char *defmsg,
 		strvec_pushf(&cmd.env, "GIT_COMMITTER_DATE=%s",
 			     opts->ignore_date ?
 			     "" :
-			     author_date_from_env_array(&cmd.env));
+			     author_date_from_env(&cmd.env));
 	if (opts->ignore_date)
 		strvec_push(&cmd.env, "GIT_AUTHOR_DATE=");
 
@@ -3923,7 +3923,7 @@ static int do_merge(struct repository *r,
 			strvec_pushf(&cmd.env, "GIT_COMMITTER_DATE=%s",
 				     opts->ignore_date ?
 				     "" :
-				     author_date_from_env_array(&cmd.env));
+				     author_date_from_env(&cmd.env));
 		if (opts->ignore_date)
 			strvec_push(&cmd.env, "GIT_AUTHOR_DATE=");
 

submodule.h

@@ -158,11 +158,11 @@ int submodule_move_head(const char *path,
 void submodule_unset_core_worktree(const struct submodule *sub);
 
 /*
- * Prepare the "env_array" parameter of a "struct child_process" for executing
+ * Prepare the "env" parameter of a "struct child_process" for executing
  * a submodule by clearing any repo-specific environment variables, but
  * retaining any config in the environment.
  */
-void prepare_submodule_repo_env(struct strvec *out);
+void prepare_submodule_repo_env(struct strvec *env);
 
 #define ABSORB_GITDIR_RECURSE_SUBMODULES (1<<0)
 void absorb_git_dir_into_superproject(const char *path,