bug#18308: 24.4.50; Info viewer cannot follow menu entry for '(texinfo) @- @hyphenation'

[Eli Zaretskii]

> From: Vincent Belaïche <vincent.b.1@hotmail.fr> 
> Date: Thu, 21 Aug 2014 10:45:11 +0200
> Cc: Vincent Belaïche <vincent.b.1@hotmail.fr>
> 
> In texinfo manual, info node `(texinfo) Breaks', if I set pointer on
> third menu entry and type RET, the I get message:
> 
> user-error: No such node or anchor: @-  @hyphenation

This is not an Emacs bug, it's a bug in the Texinfo manual.  For some
reason, it sometimes refers to this node as "@-  @hyphenation" (with 2
spaces), and sometimes as "@- @hyphenation" (with only 1 space).  The
menu uses the former, while the node name uses the latter.  So Emacs
cannot find the node.

> However, if I type '3', then I go to the wanted node.

That's because the command bound to '3' normalizes the whitespace in
the node name.  I don't know why it does that, but that code exists
since about forever.

Maybe we could consider normalizing the whitespace in the 1st case as
well, but that's just a work around for a buggy manual.