Re: [PATCH] Make builtin-commit.c export GIT_INDEX_FILE for launch_editor as well.

> 
> 
>  builtin-commit.c |    9 ++++++---
>  builtin-tag.c    |    6 +++---
>  strbuf.h         |    2 +-
>  3 files changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/builtin-commit.c b/builtin-commit.c
> index 5d27102..6e6b9f2 100644
> --- a/builtin-commit.c
> +++ b/builtin-commit.c
> @@ -748,9 +748,12 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
>  
>  	/* Get the commit message and validate it */
>  	header_len = sb.len;
> -	if (!no_edit)
> -		launch_editor(git_path(commit_editmsg), &sb);
> -	else if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
> +	if (!no_edit) {
> +		char index[PATH_MAX];
> +		const char *env[2] = { index, NULL };
> +		snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
> +		launch_editor(git_path(commit_editmsg), &sb, env);
> +	} else if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
>  		rollback_index_files();
>  		die("could not read commit message\n");
>  	}
> diff --git a/builtin-tag.c b/builtin-tag.c
> index e89b201..8cc7f9c 100644
> --- a/builtin-tag.c
> +++ b/builtin-tag.c
> @@ -23,7 +23,7 @@ static const char * const git_tag_usage[] = {
>  
>  static char signingkey[1000];
>  
> -void launch_editor(const char *path, struct strbuf *buffer)
> +void launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
>  {
>  	const char *editor, *terminal;
>  
> @@ -49,7 +49,7 @@ void launch_editor(const char *path, struct strbuf *buffer)
>  	if (strcmp(editor, ":")) {
>  		const char *args[] = { editor, path, NULL };
>  
> -		if (run_command_v_opt(args, 0))
> +		if (run_command_v_opt_cd_env(args, 0, NULL, env))
>  			die("There was a problem with the editor %s.", editor);
>  	}
>  
> @@ -318,7 +318,7 @@ static void create_tag(const unsigned char *object, const char *tag,
>  			write_or_die(fd, tag_template, strlen(tag_template));
>  		close(fd);
>  
> -		launch_editor(path, buf);
> +		launch_editor(path, buf, NULL);
>  
>  		unlink(path);
>  		free(path);
> diff --git a/strbuf.h b/strbuf.h
> index 8334a9b..36d61db 100644
> --- a/strbuf.h
> +++ b/strbuf.h
> @@ -117,6 +117,6 @@ extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
>  extern int strbuf_getline(struct strbuf *, FILE *, int);
>  
>  extern void stripspace(struct strbuf *buf, int skip_comments);
> -extern void launch_editor(const char *path, struct strbuf *buffer);
> +extern void launch_editor(const char *path, struct strbuf *buffer, const char *const *env);
>  
>  #endif /* STRBUF_H */