Re: Usage of pg_waldump

Hi,

On 2018-05-01 16:41:04 +0900, Dang Minh Huong wrote:
> The syntax is known as,
> 
>   pg_waldump [OPTION]... [STARTSEG [ENDSEG]]
> 
> Mean that, it could work with no arguments.
> But the "no arguments specified" ERROR will be returned in that case.
> 
>   $ pg_waldump
>   pg_waldump: no arguments specified
>   Try "pg_waldump --help" for more information.
> 
> I wonder it should be,
> 
>   pg_waldump { OPTION... [STARTSEG [ENDSEG]] } | { [OPTION]... STARTSEG [ENDSEG] }
> 
> Have any comments?

To me that doesn't seem like an improvement, looks a good chunk more
complicated. You'll get the error and the docs also tell you that some
arguments are needed.

Greetings,

Andres Freund