[PATCH] internals: document that "branches" is a legacy command

[Siddharth Agarwal]

On 5/3/17 22:07, Siddharth Agarwal wrote:
> # HG changeset patch
> # User Siddharth Agarwal <sid0 at fb.com>
> # Date 1493845634 25200
> #      Wed May 03 14:07:14 2017 -0700
> # Node ID 7e90b9553a02ef30fd289736cfb559c83b6766e2
> # Parent  8ac7ac714e922fd34abe9f5a16fcf018c8b12abc
> internals: document that "branches" is a legacy command

As martinvonz helpfully pointed out on IRC, this should read "legacy 
wire command". Whoops!


>
> Modern clients use a different discovery mechanism.
>
> diff --git a/mercurial/help/internals/wireprotocol.txt b/mercurial/help/internals/wireprotocol.txt
> --- a/mercurial/help/internals/wireprotocol.txt
> +++ b/mercurial/help/internals/wireprotocol.txt
> @@ -632,6 +632,9 @@ There is no trailing newline.
>   branches
>   --------
>   
> +(Legacy command used for discovery in old clients. Clients with ``getbundle``
> +use the ``known`` and ``heads`` commands instead.)
> +
>   Obtain ancestor changesets of specific nodes back to a branch point.
>   
>   Despite the name, this command has nothing to do with Mercurial named branches.
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