Disable Common Lisp / S-Exp target language

Clean up to disable target languages that have been neglected/not functional.
Target language be fully deleted in SWIG 4.1 unless a new maintainer brings
it up to an acceptable status (experimental or supported).

Issue #1447

ANNOUNCE

@@ -13,7 +13,7 @@ from other programming languages including Perl, Python, Tcl, Ruby,
 PHP, C#, Go, Java, Javascript, Lua, Scheme (Guile, MzScheme, CHICKEN),
 D, Ocaml, Octave, R, Scilab, Common Lisp (CLISP,
 Allegro CL, CFFI).  SWIG can also export its parse tree in
-the form of XML and Lisp s-expressions.  Major applications of SWIG
+the form of XML.  Major applications of SWIG
 include generation of scripting language extension modules, rapid
 prototyping, testing, and user interface development for large
 C/C++ systems.

CHANGES.current

@@ -7,6 +7,10 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.0.0 (in progress)
 ===========================
 
+2019-02-04: wsfulton
+	    [S-EXP] #1447 Common Lisp S-Exp has been disabled as a target language in SWIG as part of a
+            clean up to remove target languages that have been neglected/not functional.
+
 2019-02-04: wsfulton
 	    [UFFI] #1447 Common Lisp UFFI has been disabled as a target language in SWIG as part of a
             clean up to remove target languages that have been neglected/not functional.

Doc/Manual/Preprocessor.html

@@ -130,7 +130,6 @@ SWIGPYTHON                      Defined when using Python
 SWIGR                           Defined when using R
 SWIGRUBY                        Defined when using Ruby
 SWIGSCILAB                      Defined when using Scilab
-SWIGSEXP                        Defined when using S-expressions
 SWIGTCL                         Defined when using Tcl
 SWIGXML                         Defined when using XML
 </pre></div>

Doc/Manual/SWIG.html

@@ -138,7 +138,6 @@ Supported Target Language Options
      -r              - Generate R (aka GNU S) wrappers
      -ruby           - Generate Ruby wrappers
      -scilab         - Generate Scilab wrappers
-     -sexp           - Generate Lisp S-Expressions wrappers
      -tcl            - Generate Tcl wrappers
      -xml            - Generate XML wrappers
 

README

@@ -6,8 +6,7 @@ Tagline: SWIG is a compiler that integrates C and C++ with languages
          including Perl, Python, Tcl, Ruby, PHP, Java, C#, D, Go, Lua,
          Octave, R, Scheme (Guile, MzScheme/Racket, CHICKEN), Scilab,
          Ocaml, Common Lisp (CLISP, Allegro CL, CFFI).
-         SWIG can also export its parse tree into XML and
-         Lisp s-expressions.
+         SWIG can also export its parse tree into XML.
 
 SWIG reads annotated C/C++ header files and creates wrapper code (glue
 code) in order to make the corresponding C/C++ libraries available to

Source/Makefile.am

@@ -74,7 +74,6 @@ eswig_SOURCES =	CParse/cscanner.c		\
 		Modules/python.cxx		\
 		Modules/r.cxx			\
 		Modules/ruby.cxx		\
-		Modules/s-exp.cxx		\
 		Modules/scilab.cxx		\
 		Modules/swigmain.cxx		\
 		Modules/tcl8.cxx		\

Source/Modules/swigmain.cxx

@@ -48,7 +48,6 @@ extern "C" {
   Language *swig_r(void);
   Language *swig_ruby(void);
   Language *swig_scilab(void);
-  Language *swig_sexp(void);
   Language *swig_tcl(void);
   Language *swig_xml(void);
 }
@@ -84,7 +83,7 @@ static TargetLanguageModule modules[] = {
   {"-r", swig_r, "R (aka GNU S)", Supported},
   {"-ruby", swig_ruby, "Ruby", Supported},
   {"-scilab", swig_scilab, "Scilab", Supported},
-  {"-sexp", swig_sexp, "Lisp S-Expressions", Supported},
+  {"-sexp", NULL, "Lisp S-Expressions", Disabled},
   {"-tcl", swig_tcl, "Tcl", Supported},
   {"-tcl8", swig_tcl, NULL, Supported},
   {"-uffi", NULL, "Common Lisp / UFFI", Disabled},

swig.spec.in

@@ -30,7 +30,7 @@ OCAML and C#. Also several interpreted and compiled Scheme implementations
 (Guile, MzScheme, Chicken) are supported. SWIG is most commonly used to create
 high-level interpreted or compiled programming environments, user interfaces,
 and as a tool for testing and prototyping C/C++ software. SWIG can also export
-its parse tree in the form of XML and Lisp s-expressions. 
+its parse tree in the form of XML. 
 
 %prep
 %setup -q -n %{name}-%{version}