Re: [PATCH v4 4/6] bisect--helper: reimplement `bisect_visualize()`shell function in C

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Hi Miriam,

this looks good!

Just one suggestion (but I won't insist on it):

On Tue, 17 Aug 2021, Miriam Rubio wrote:

> @@ -1036,6 +1037,44 @@ static enum bisect_error bisect_skip(struct bisect_terms *terms, const char **ar
>  	return res;
>  }
>
> +static int bisect_visualize(struct bisect_terms *terms, const char **argv, int argc)
> +{
> +	struct strvec args = STRVEC_INIT;
> +	int flags = RUN_COMMAND_NO_STDIN, res = 0;
> +	struct strbuf sb = STRBUF_INIT;
> +
> +	if (bisect_next_check(terms, NULL) != 0)
> +		return BISECT_FAILED;
> +
> +	if (!argc) {
> +		if ((getenv("DISPLAY") || getenv("SESSIONNAME") || getenv("MSYSTEM") ||
> +		     getenv("SECURITYSESSIONID")) && exists_in_PATH("gitk"))
> +			strvec_push(&args, "gitk");
> +		else {
> +			strvec_pushl(&args, "log", NULL);

This could be written more concisely as `strvec_push(&args, "log")`.

> +			flags |= RUN_GIT_CMD;
> +		}
> +	} else {
> +		if (argv[0][0] == '-') {
> +			strvec_pushl(&args, "log", NULL);

Same here.

Otherwise, it looks good to me!

Thank you,
Dscho

> +			flags |= RUN_GIT_CMD;
> +		} else if (strcmp(argv[0], "tig") && !starts_with(argv[0], "git"))
> +			flags |= RUN_GIT_CMD;
> +
> +		strvec_pushv(&args, argv);
> +	}
> +
> +	strvec_pushl(&args, "--bisect", "--", NULL);
> +
> +	strbuf_read_file(&sb, git_path_bisect_names(), 0);
> +	sq_dequote_to_strvec(sb.buf, &args);
> +	strbuf_release(&sb);
> +
> +	res = run_command_v_opt(args.v, flags);
> +	strvec_clear(&args);
> +	return res;
> +}
> +
>  int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
>  {
>  	enum {
> @@ -1048,7 +1087,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
>  		BISECT_STATE,
>  		BISECT_LOG,
>  		BISECT_REPLAY,
> -		BISECT_SKIP
> +		BISECT_SKIP,
> +		BISECT_VISUALIZE,
>  	} cmdmode = 0;
>  	int res = 0, nolog = 0;
>  	struct option options[] = {
> @@ -1070,6 +1110,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
>  			 N_("replay the bisection process from the given file"), BISECT_REPLAY),
>  		OPT_CMDMODE(0, "bisect-skip", &cmdmode,
>  			 N_("skip some commits for checkout"), BISECT_SKIP),
> +		OPT_CMDMODE(0, "bisect-visualize", &cmdmode,
> +			 N_("visualize the bisection"), BISECT_VISUALIZE),
>  		OPT_BOOL(0, "no-log", &nolog,
>  			 N_("no log for BISECT_WRITE")),
>  		OPT_END()
> @@ -1131,6 +1173,10 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
>  		get_terms(&terms);
>  		res = bisect_skip(&terms, argv, argc);
>  		break;
> +	case BISECT_VISUALIZE:
> +		get_terms(&terms);
> +		res = bisect_visualize(&terms, argv, argc);
> +		break;
>  	default:
>  		BUG("unknown subcommand %d", cmdmode);
>  	}
> diff --git a/git-bisect.sh b/git-bisect.sh
> index 6a7afaea8d..95f7f3fb8c 100755
> --- a/git-bisect.sh
> +++ b/git-bisect.sh
> @@ -39,29 +39,6 @@ _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
>  TERM_BAD=bad
>  TERM_GOOD=good
>
> -bisect_visualize() {
> -	git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
> -
> -	if test $# = 0
> -	then
> -		if test -n "${DISPLAY+set}${SESSIONNAME+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" &&
> -			type gitk >/dev/null 2>&1
> -		then
> -			set gitk
> -		else
> -			set git log
> -		fi
> -	else
> -		case "$1" in
> -		git*|tig) ;;
> -		-*)	set git log "$@" ;;
> -		*)	set git "$@" ;;
> -		esac
> -	fi
> -
> -	eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
> -}
> -
>  bisect_run () {
>  	git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
>
> @@ -152,7 +129,7 @@ case "$#" in
>  		# Not sure we want "next" at the UI level anymore.
>  		git bisect--helper --bisect-next "$@" || exit ;;
>  	visualize|view)
> -		bisect_visualize "$@" ;;
> +		git bisect--helper --bisect-visualize "$@" || exit;;
>  	reset)
>  		git bisect--helper --bisect-reset "$@" ;;
>  	replay)
> --
> 2.29.2
>
>




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