[PATCH] repoview: clarify that we want to keep the graph connected while filtering

[Jun Wu]

I like the change. It made me understand what is "consistent" instantly.
I also don't think "nullid" clarification should block this patch.

Excerpts from Martin von Zweigbergk's message of 2017-05-27 00:02:22 -0700:
> # HG changeset patch
> # User Martin von Zweigbergk <martinvonz at google.com>
> # Date 1495868528 25200
> #      Sat May 27 00:02:08 2017 -0700
> # Node ID 0c1c0e998fe248978ebbfa9149f3e3c107fb276d
> # Parent  4c4d91908492d7474a4f486e9c2a4922f721ddfe
> repoview: clarify that we want to keep the graph connected while filtering
> 
> The word "consistent" was unclear to me -- there are so many
> dimensions in which things can consistent.
> 
> diff --git a/mercurial/repoview.py b/mercurial/repoview.py
> --- a/mercurial/repoview.py
> +++ b/mercurial/repoview.py
> @@ -54,9 +54,9 @@
>  def _getstatichidden(repo):
>      """Revision to be hidden (disregarding dynamic blocker)
>  
> -    To keep a consistent graph, we cannot hide any revisions with
> +    To keep the graph connected, we cannot hide any revisions with
>      non-hidden descendants. This function computes the set of
> -    revisions that could be hidden while keeping the graph consistent.
> +    revisions that could be hidden while keeping the graph connected.
>  
>      A second pass will be done to apply "dynamic blocker" like bookmarks or
>      working directory parents.