Re: [PATCH v2] shell: Rewrite documentation and improve error message

[Greg Brockman <gdb@MIT.EDU>]

> -COMMAND_DIR is the path 'git-shell-commands' in the user's home
> -directory. The user must have read and execute permissions to the
> -directory for it to be useful.
> +COMMAND_DIR is the path "$HOME/git-shell-commands". The user must have
> +read and execute permissions to the directory in order to execute the
> +programs in it. The programs are executed with a cwd of $HOME, and
> +<argument> is passed to them as a command-line argument.
Sorry, I guess I wasn't clear enough with what I meant here.  The
<argument> is actually parsed as a command-line string (so split on
spaces respecting quotes), not just passed as a raw command-line
argument.

>                if (access(COMMAND_DIR, R_OK | X_OK) == -1) {
> -                       die("Inteactive git shell is not enabled.\n"
> -                           "hint: " COMMAND_DIR " should exist "
> +                       die("Interactive git shell is not enabled.\n"
> +                           "hint: ~/$COMMAND_DIR should exist "
>                            "and have read and execute access.");
>                }
>                run_shell();
Whoops, I'm not sure why I put a $ here.  "hint: ~/" COMMAND_DIR "
should exist " is definitely what you want.

Other than that, looks fine to me.