Re: git cat-file -e behavior

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On Mon, Feb 29, 2016 at 06:44:55AM -0500, Jeff King wrote:

> [...]but it would be easy to change:
> 
> diff --git a/builtin/cat-file.c b/builtin/cat-file.c
> index 54db118..afde169 100644
> --- a/builtin/cat-file.c
> +++ b/builtin/cat-file.c
> @@ -35,6 +35,9 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
>  	if (unknown_type)
>  		flags |= LOOKUP_UNKNOWN_OBJECT;
>  
> +	if (opt == 'e')
> +		return !has_sha1_file(sha1);
> +
>  	if (get_sha1_with_context(obj_name, 0, sha1, &obj_context))
>  		die("Not a valid object name %s", obj_name);
>  
> @@ -58,9 +61,6 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
>  		printf("%lu\n", size);
>  		return 0;
>  
> -	case 'e':
> -		return !has_sha1_file(sha1);
> -
>  	case 'c':
>  		if (!obj_context.path[0])
>  			die("git cat-file --textconv %s: <object> must be <sha1:path>",

This is wrong, of course. We still need to call get_sha1, but just need
to not die. So it's more like this (totally untested, naturally):

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 54db118..44add8c 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -35,8 +35,11 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
 	if (unknown_type)
 		flags |= LOOKUP_UNKNOWN_OBJECT;
 
-	if (get_sha1_with_context(obj_name, 0, sha1, &obj_context))
+	if (get_sha1_with_context(obj_name, 0, sha1, &obj_context)) {
+		if (opt == 'e')
+			return 1;
 		die("Not a valid object name %s", obj_name);
+	}
 
 	buf = NULL;
 	switch (opt) {

-Peff
--
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