Add optional SHyphen Latex macro to prevent hyphens from appearing in @racket[...] identifiers

* Prevent hyphens from appearing in @racket[...] identifiers when they overflow.

* Add SHyphen command.

A style file can redefine SHyphen to toggle how they want to
hyphen their text

* Add documentation

scribble-doc/scribblings/scribble/config.scrbl

@@ -640,6 +640,25 @@ style:
 
  ]
 
+Additionally, the @filepath{racket.tex} Latex configuration
+includes several macros that you can redefine to adjust the
+output style of Racket code:
+
+@itemlist[
+ @item{@ltxd[2]{SColorize} --- Sets the color scheme of
+  Racket code. Can be redefined to create black and white
+  code. The first argument is the requested color, and the
+  second argument is the text for that color.}
+ @item{@ltxd[1]{SHyphen} --- Enables or Disables the ability
+  for identifiers and keywords in Racket code from being
+  hyphenated. Defaults to enabled (for compatibility).
+  Redefine to disable or change the hyphenation behavior. For
+  example, to cause the text to overfill rather than hyphen,
+  it can be redefined to:
+  @tt["\\renewcommand{\\SHyphen}[1]{\\mbox{#1}}"]. The first
+  argument is an identifier or keyword inside of a code
+  block.}]
+
 @; ------------------------------------------------------------
 
 @section[#:tag "latex-prefix"]{Latex Prefix Support}

scribble-lib/scribble/racket.tex

@@ -2,7 +2,10 @@
 % Redefine \SColorize to produce B&W Scheme text
 \newcommand{\SColorize}[2]{\color{#1}{#2}}
 
-\newcommand{\inColor}[2]{{\Scribtexttt{\SColorize{#1}{#2}}}}
+% Redefine SHyphen to allow identifiers to be hyphenated
+\newcommand{\SHyphen}[1]{#1}
+
+\newcommand{\inColor}[2]{{\SHyphen{\Scribtexttt{\SColorize{#1}{#2}}}}}
 \definecolor{PaleBlue}{rgb}{0.90,0.90,1.0}
 \definecolor{LightGray}{rgb}{0.90,0.90,0.90}
 \definecolor{CommentColor}{rgb}{0.76,0.45,0.12}