[racket] possible bug in scribble-pkgs / scribble-lib / scribble / html-render.rkt

The intent of the "mywbr" span is to allow a line break between "/" and
the following character (since we sometimes have long identifiers where
characters like "/" are a helpful break point). The "mywbr" style sets
the span width to 0 to avoid rendering any space.


Danny Yoo was the last person to try to improve this. See

 https://github.com/plt/racket/commit/29031f0972

which he reverted with

 https://github.com/plt/racket/commit/7323dde0ea



At Wed, 6 Nov 2013 18:58:16 -0800, Matthew Butterick wrote:
> Round about line 1494 is the following:
> 
> '(span ([class "mywbr"]) " " nbsp))
> 
> I believe this line is causing the (I assume unintended) side effect of
> adding a spurious space after slashes within Racket commands in the
> left-hand navigation in the documentation, for instance here:
> 
> http://docs.racket-lang.org/reference/for.html?q=for/list#(part._.Iteration_and
> _.Comprehension_.Forms)
> 
> 
> So in the left nav, commands with slashes are displayed like this:
> 
> for/ list
> for/ vector
> for/ hash
> ...
> 
> But they ought to appear like this:
> 
> for/list
> for/vector
> for/hash
> ...
> 
> 
> Matthew Butterick
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