run-command API: rename "env_array" to "env"

Start following-up on the rename mentioned in c7c4bdeccf3 (run-command
API: remove "env" member, always use "env_array", 2021-11-25) of
"env_array" to "env".

The "env_array" name was picked in 19a583dc39e (run-command: add
env_array, an optional argv_array for env, 2014-10-19) because "env"
was taken. Let's not forever keep the oddity of "*_array" for this
"struct strvec", but not for its "args" sibling.

This commit is almost entirely made with a coccinelle rule[1]. The
only manual change here is in run-command.h to rename the struct
member itself and to change "env_array" to "env" in the
CHILD_PROCESS_INIT initializer.

The rest of this is all a result of applying [1]:

 * make contrib/coccinelle/run_command.cocci.patch
 * patch -p1 <contrib/coccinelle/run_command.cocci.patch
 * git add -u

1. cat contrib/coccinelle/run_command.pending.cocci
   @@
   struct child_process E;
   @@
   - E.env_array
   + E.env

   @@
   struct child_process *E;
   @@
   - E->env_array
   + E->env

I've avoided changing any comments and derived variable names here,
that will all be done in the next commit.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/builtin/difftool.c b/builtin/difftool.c
index faa3507369..b3c509b8de 100644
--- a/builtin/difftool.c
+++ b/builtin/difftool.c
@@ -217,7 +217,7 @@ static void changed_files(struct hashmap *result, const char *index_path,
 	update_index.use_shell = 0;
 	update_index.clean_on_exit = 1;
 	update_index.dir = workdir;
-	strvec_pushf(&update_index.env_array, "GIT_INDEX_FILE=%s", index_path);
+	strvec_pushf(&update_index.env, "GIT_INDEX_FILE=%s", index_path);
 	/* Ignore any errors of update-index */
 	run_command(&update_index);
 
@@ -230,7 +230,7 @@ static void changed_files(struct hashmap *result, const char *index_path,
 	diff_files.clean_on_exit = 1;
 	diff_files.out = -1;
 	diff_files.dir = workdir;
-	strvec_pushf(&diff_files.env_array, "GIT_INDEX_FILE=%s", index_path);
+	strvec_pushf(&diff_files.env, "GIT_INDEX_FILE=%s", index_path);
 	if (start_command(&diff_files))
 		die("could not obtain raw diff");
 	fp = xfdopen(diff_files.out, "r");
@@ -675,7 +675,7 @@ static int run_file_diff(int prompt, const char *prefix,
 
 	child->git_cmd = 1;
 	child->dir = prefix;
-	strvec_pushv(&child->env_array, env);
+	strvec_pushv(&child->env, env);
 
 	return run_command(child);
 }