Re: [PATCH v2] Simplify handling of setup_git_directory_gently() failure cases.

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

Hi Erin,

On Sat, 15 Dec 2018, Erin Dahlgren wrote:

> diff --git a/setup.c b/setup.c
> index 1be5037..e1a9e17 100644
> --- a/setup.c
> +++ b/setup.c
> @@ -831,16 +831,6 @@ static const char *setup_bare_git_dir(struct strbuf *cwd, int offset,
>  	return NULL;
>  }
>  
> -static const char *setup_nongit(const char *cwd, int *nongit_ok)
> -{
> -	if (!nongit_ok)
> -		die(_("not a git repository (or any of the parent directories): %s"), DEFAULT_GIT_DIR_ENVIRONMENT);
> -	if (chdir(cwd))
> -		die_errno(_("cannot come back to cwd"));
> -	*nongit_ok = 1;
> -	return NULL;
> -}
> -
>  static dev_t get_device_or_die(const char *path, const char *prefix, int prefix_len)
>  {
>  	struct stat buf;
> @@ -1097,18 +1087,20 @@ const char *setup_git_directory_gently(int *nongit_ok)
>  		prefix = setup_bare_git_dir(&cwd, dir.len, &repo_fmt, nongit_ok);
>  		break;
>  	case GIT_DIR_HIT_CEILING:
> -		prefix = setup_nongit(cwd.buf, nongit_ok);
> -		break;
> +		if (!nongit_ok)
> +			die(_("not a git repository (or any of the parent directories): %s"),
> +					DEFAULT_GIT_DIR_ENVIRONMENT);

I am terribly sorry to bother you about formatting issues (in my mind, it
is quite an annoying thing that we still have no fully automatic way to
format Git's source code according to Git's preferred coding style, but
there you go...): this `DEFAULT_GIT_DIR_ENVIRONMENT` should be aligned
with the first parameter of `die()`, i.e.

+		if (!nongit_ok)
+			die(_("not a git repository (or any of the parent directories): %s"),
+			    DEFAULT_GIT_DIR_ENVIRONMENT);

> +		*nongit_ok = 1;
> +		strbuf_release(&dir);
> +		return NULL;
>  	case GIT_DIR_HIT_MOUNT_POINT:
> -		if (nongit_ok) {
> -			*nongit_ok = 1;
> -			strbuf_release(&cwd);
> -			strbuf_release(&dir);
> -			return NULL;
> -		}
> -		die(_("not a git repository (or any parent up to mount point %s)\n"
> -		      "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set)."),
> -		    dir.buf);
> +		if (!nongit_ok)
> +			die(_("not a git repository (or any parent up to mount point %s)\n"
> +			      "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set)."),
> +					dir.buf);

Likewise, `dir.buf` should be aligned with the `_` two lines above.

Otherwise I think this patch is good to go!

Thank you,
Johannes

> +		*nongit_ok = 1;
> +		strbuf_release(&dir);
> +		return NULL;
>  	default:
>  		BUG("unhandled setup_git_directory_1() result");
>  	}
> -- 
> 2.7.4
> 
>