Re: [PATCH] Make Git accept absolute path names for files within the work tree

[Junio C Hamano <gitster@pobox.com>]

Robin Rosenberg <robin.rosenberg@dewire.com> writes:

> Was it this simple?
>
> diff --git a/setup.c b/setup.c
> index 43cd3f9..9b3a9ff 100644
> --- a/setup.c
> +++ b/setup.c
> @@ -6,6 +6,22 @@ static int inside_work_tree = -1;
>  
>  const char *prefix_path(const char *prefix, int len, const char *path)
>  {
> +	if (is_absolute_path(path)) {
> +		const char *work_tree = get_git_work_tree();
> +		int n = strlen(work_tree);
> +		if (!strncmp(path, work_tree, n) && (path[n] == '/' || !path[n])) {
> +			if (path[n])
> +				path += 1;
> +			path += n;
> +			if (prefix && !strncmp(path, prefix, len - 1)) {
> +			    if (path[len - 1] == '/')
> +				    path += len;
> +			    else
> +				    if (!path[len - 1])
> +					    path += len - 1;
> +			}
> +		}
> +	}
>  	const char *orig = path;

Decl after statement.

I do not think there is fundamental reason to object to this change, as
long as the prefixing is done to the path that is trying to name a path
in the working tree.

Also some codepath that does not require any work tree may want to call
prefix_path().  I do not know what would happen in such a case.

Although I didn't look at all the callers, I think the caller from
config.c is not talking about a path in the work tree, and not all users
of config.c need to have work-tree.