lisp nil always enabled

* configure.ac: Remove --disable-elisp option. Lisp nil is always
  enabled.

* libguile/boolean.h:
* libguile/gen-scmconfig.c:
* libguile/gen-scmconfig.h.in:
* libguile/init.c:
* libguile/lang.c:
* libguile/lang.h:
* libguile/pairs.h:
* libguile/private-options.h:
* libguile/read.c: Remove conditionals for disabling elisp.

configure.ac

@@ -160,10 +160,6 @@ fi
 AC_DEFINE_UNQUOTED([SCM_WARN_DEPRECATED_DEFAULT], "$warn_default",
 [Define this to control the default warning level for deprecated features.])
 
-AC_ARG_ENABLE(elisp,
-  [  --disable-elisp         omit Emacs Lisp support],,
-  enable_elisp=yes)
-
 dnl  Added the following configure option in January 2008 following
 dnl  investigation of problems with "64" system and library calls on
 dnl  Darwin (MacOS X).  The libguile code (_scm.h) assumes that if a
@@ -254,11 +250,6 @@ if test "$enable_debug_malloc" = yes; then
    AC_LIBOBJ([debug-malloc])
 fi
 
-if test "$enable_elisp" = yes; then
-  SCM_I_GSC_ENABLE_ELISP=1
-else
-  SCM_I_GSC_ENABLE_ELISP=0
-fi
 AC_CHECK_LIB(uca, __uc_get_ar_bsp)
 
 AC_C_CONST
@@ -1622,7 +1613,6 @@ AC_SUBST([sitedir])
 AC_SUBST([SCM_I_GSC_GUILE_DEBUG])
 AC_SUBST([SCM_I_GSC_ENABLE_DISCOURAGED])
 AC_SUBST([SCM_I_GSC_ENABLE_DEPRECATED])
-AC_SUBST([SCM_I_GSC_ENABLE_ELISP])
 AC_SUBST([SCM_I_GSC_STACK_GROWS_UP])
 AC_SUBST([SCM_I_GSC_C_INLINE])
 AC_CONFIG_FILES([libguile/gen-scmconfig.h])

libguile/boolean.h

@@ -52,12 +52,8 @@
  * SCM_MATCHES_BITS_IN_COMMON in tags.h for more information on
  * how the following macro works.
  */
-#if SCM_ENABLE_ELISP
 #define scm_is_false_or_nil(x)    \
   (SCM_MATCHES_BITS_IN_COMMON ((x), SCM_ELISP_NIL, SCM_BOOL_F))
-#else
-# define scm_is_false_or_nil(x)    (scm_is_false_assume_not_nil (x))
-#endif
 #define scm_is_true_and_not_nil(x) (!scm_is_false_or_nil (x))
 
 /* %nil is false. */
@@ -80,13 +76,8 @@
  * SCM_BOOL_T, SCM_ELISP_NIL, or SCM_XXX_ANOTHER_BOOLEAN_DONT_USE_0.
  * Otherwise, it returns 0.
  */
-#if SCM_ENABLE_ELISP
 #define scm_is_bool_or_nil(x)  \
   (SCM_MATCHES_BITS_IN_COMMON ((x), SCM_BOOL_T, SCM_ELISP_NIL))
-#else
-# define scm_is_bool_or_nil(x)  (scm_is_bool_and_not_nil (x))
-#endif
-
 #define scm_is_bool_and_not_nil(x)  \
   (SCM_MATCHES_BITS_IN_COMMON ((x), SCM_BOOL_F, SCM_BOOL_T))
 
@@ -117,11 +108,8 @@ SCM_API int scm_to_bool (SCM x);
  * following: SCM_BOOL_F, SCM_ELISP_NIL, SCM_EOL or
  * SCM_XXX_ANOTHER_LISP_FALSE_DONT_USE.  Otherwise, it returns 0.
  */
-#if SCM_ENABLE_ELISP
 #define scm_is_lisp_false(x)  \
   (SCM_MATCHES_BITS_IN_COMMON ((x), SCM_BOOL_F, SCM_EOL))
-# define scm_is_lisp_true(x)   (!scm_is_lisp_false(x))
-#endif
 
 
 

libguile/gen-scmconfig.c

@@ -232,11 +232,6 @@ main (int argc, char *argv[])
   pf ("/* (value will be 0 or 1). */\n");
   pf ("#define SCM_ENABLE_DEPRECATED %d\n", SCM_I_GSC_ENABLE_DEPRECATED);
 
-  /*** SCM_ENABLE_ELISP (0 or 1) ***/
-  pf ("\n");
-  pf ("/* Set to 1 to add Elisp support (in addition to Scheme). */\n");
-  pf ("#define SCM_ENABLE_ELISP %d /* 0 or 1 */\n", SCM_I_GSC_ENABLE_ELISP);
-
   /*** SCM_STACK_GROWS_UP (0 or 1) ***/
   pf ("\n");
   pf ("/* Set to 1 if the stack grows up, 0 otherwise. */\n");

libguile/gen-scmconfig.h.in

@@ -9,7 +9,6 @@
 #define SCM_I_GSC_GUILE_DEBUG @SCM_I_GSC_GUILE_DEBUG@
 #define SCM_I_GSC_ENABLE_DISCOURAGED @SCM_I_GSC_ENABLE_DISCOURAGED@
 #define SCM_I_GSC_ENABLE_DEPRECATED @SCM_I_GSC_ENABLE_DEPRECATED@
-#define SCM_I_GSC_ENABLE_ELISP @SCM_I_GSC_ENABLE_ELISP@
 #define SCM_I_GSC_STACK_GROWS_UP @SCM_I_GSC_STACK_GROWS_UP@
 #define SCM_I_GSC_C_INLINE @SCM_I_GSC_C_INLINE@
 #define SCM_I_GSC_NEEDS_STDINT_H @SCM_I_GSC_NEEDS_STDINT_H@

libguile/init.c

@@ -557,9 +557,7 @@ scm_i_init_guile (SCM_STACKITEM *base)
   scm_init_simpos ();
   scm_init_dynamic_linking (); /* Requires smob_prehistory */
   scm_bootstrap_i18n ();
-#if SCM_ENABLE_ELISP
   scm_init_lang ();
-#endif /* SCM_ENABLE_ELISP */
   scm_init_script ();
 
   scm_init_goops ();

libguile/lang.c

@@ -1,4 +1,4 @@
-/*	Copyright (C) 1999, 2000, 2001, 2006, 2008 Free Software Foundation, Inc.
+/*	Copyright (C) 1999, 2000, 2001, 2006, 2008, 2010 Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -36,8 +36,6 @@
 /* {Multi-language support}
  */
 
-#if SCM_ENABLE_ELISP
-
 void
 scm_init_lang ()
 {
@@ -46,8 +44,6 @@ scm_init_lang ()
   scm_c_define ("%nil", SCM_ELISP_NIL);
 }
 
-#endif /* SCM_ENABLE_ELISP */
-
 /*
   Local Variables:
   c-file-style: "gnu"

libguile/lang.h

@@ -3,7 +3,7 @@
 #ifndef SCM_LANG_H
 #define SCM_LANG_H
 
-/* Copyright (C) 1998, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1998, 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -27,20 +27,13 @@
 
 
 
-#if SCM_ENABLE_ELISP
-
 #define SCM_NILP(x) (scm_is_eq ((x), SCM_ELISP_NIL))
 
 SCM_INTERNAL void scm_init_lang (void);
 
-#else  /* ! SCM_ENABLE_ELISP */
-
-#define SCM_NILP(x) 0
-
-#endif /* ! SCM_ENABLE_ELISP */
-
 #define SCM_NULL_OR_NIL_P(x) (scm_is_null_or_nil (x))
 
+
 #endif  /* SCM_LANG_H */
 
 /*

libguile/pairs.h

@@ -3,7 +3,7 @@
 #ifndef SCM_PAIRS_H
 #define SCM_PAIRS_H
 
-/* Copyright (C) 1995,1996,2000,2001, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,2000,2001, 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -51,12 +51,8 @@
  * SCM_MATCHES_BITS_IN_COMMON in tags.h for more information on
  * how the following macro works.
  */
-#if SCM_ENABLE_ELISP
 #define scm_is_null_or_nil(x)  \
   (SCM_MATCHES_BITS_IN_COMMON ((x), SCM_ELISP_NIL, SCM_EOL))
-#else
-# define scm_is_null_or_nil(x)  (scm_is_null_assume_not_nil (x))
-#endif
 
 /* %nil is null. */
 #define scm_is_null(x)		(scm_is_null_or_nil(x))

libguile/private-options.h

@@ -91,20 +91,11 @@ SCM_API scm_t_option scm_read_opts[];
 #define SCM_RECORD_POSITIONS_P scm_read_opts[1].val
 #define SCM_CASE_INSENSITIVE_P scm_read_opts[2].val
 #define SCM_KEYWORD_STYLE      scm_read_opts[3].val
-#if SCM_ENABLE_ELISP
 #define SCM_ELISP_VECTORS_P    scm_read_opts[4].val
 #define SCM_ESCAPED_PARENS_P   scm_read_opts[5].val
 #define SCM_R6RS_ESCAPES_P     scm_read_opts[6].val
 #define SCM_SQUARE_BRACKETS_P  scm_read_opts[7].val
-#else
-#define SCM_R6RS_ESCAPES_P     scm_read_opts[4].val
-#define SCM_SQUARE_BRACKETS_P  scm_read_opts[5].val
-#endif
 
-#if SCM_ENABLE_ELISP
 #define SCM_N_READ_OPTIONS 8
-#else
-#define SCM_N_READ_OPTIONS 6
-#endif
 
 #endif  /* PRIVATE_OPTIONS */ 

libguile/read.c

@@ -70,12 +70,10 @@ scm_t_option scm_read_opts[] = {
     "Convert symbols to lower case."},
   { SCM_OPTION_SCM, "keywords", (unsigned long) SCM_BOOL_F,
     "Style of keyword recognition: #f, 'prefix or 'postfix."},
-#if SCM_ENABLE_ELISP
   { SCM_OPTION_BOOLEAN, "elisp-vectors", 0,
     "Support Elisp vector syntax, namely `[...]'."},
   { SCM_OPTION_BOOLEAN, "elisp-strings", 0,
     "Support `\\(' and `\\)' in strings."},
-#endif
   { SCM_OPTION_BOOLEAN, "r6rs-hex-escapes", 0,
     "Use R6RS variable-length character and string hex escapes."},
   { SCM_OPTION_BOOLEAN, "square-brackets", 1,
@@ -509,13 +507,11 @@ scm_read_string (int chr, SCM port)
             case '"':
             case '\\':
               break;
-#if SCM_ENABLE_ELISP
             case '(':
             case ')':
               if (SCM_ESCAPED_PARENS_P)
                 break;
               goto bad_escaped;
-#endif
             case '\n':
               continue;
             case '0':