updated for version 7.2.400

Problem:    Dynamic Ruby is not initialised properly for version 1.9.1.
            Ruby cannot create strings from NULL.
Solution:   Cleanup #ifdefs.  Handle NULL like an empty string.  Add
            ruby_init_stack. (Sergey Khorev)

src/if_ruby.c

@@ -53,6 +53,11 @@
 # undef _WIN32_WINNT
 #endif
 
+#if (defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
+    || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
+# define RUBY19_OR_LATER 1
+#endif
+
 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
 /* Ruby 1.9 defines a number of static functions which use rb_num2long and
  * rb_int2big */
@@ -61,7 +66,7 @@
 #endif
 
 #include <ruby.h>
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
 # include <ruby/encoding.h>
 #endif
 
@@ -172,8 +177,7 @@ static void ruby_vim_init(void);
 # define rb_ary_new			dll_rb_ary_new
 # define rb_ary_push			dll_rb_ary_push
 #endif
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19 \
+#ifdef RUBY19_OR_LATER
-    || defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
 # define rb_errinfo			dll_rb_errinfo
 #else
 # define ruby_errinfo			(*dll_ruby_errinfo)
@@ -185,12 +189,13 @@ static void ruby_vim_init(void);
 # define rb_w32_snprintf		dll_rb_w32_snprintf
 #endif
 
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
 # define ruby_script			dll_ruby_script
 # define rb_enc_find_index		dll_rb_enc_find_index
 # define rb_enc_find			dll_rb_enc_find
 # define rb_enc_str_new			dll_rb_enc_str_new
 # define rb_sprintf			dll_rb_sprintf
+# define ruby_init_stack		dll_ruby_init_stack
 #endif
 
 /*
@@ -240,8 +245,7 @@ static VALUE (*dll_rb_str_cat) (VALUE, const char*, long);
 static VALUE (*dll_rb_str_concat) (VALUE, VALUE);
 static VALUE (*dll_rb_str_new) (const char*, long);
 static VALUE (*dll_rb_str_new2) (const char*);
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19 \
+#ifdef RUBY19_OR_LATER
-    || defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
 static VALUE (*dll_rb_errinfo) (void);
 #else
 static VALUE *dll_ruby_errinfo;
@@ -255,22 +259,23 @@ static VALUE (*dll_rb_float_new) (double);
 static VALUE (*dll_rb_ary_new) (void);
 static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
 #endif
-#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
+#ifdef RUBY19_OR_LATER
 static VALUE (*dll_rb_int2big)(SIGNED_VALUE);
 #endif
 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
 static int (*dll_rb_w32_snprintf)(char*, size_t, const char*, ...);
 #endif
 
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
 static void (*dll_ruby_script) (const char*);
 static int (*dll_rb_enc_find_index) (const char*);
 static rb_encoding* (*dll_rb_enc_find) (const char*);
 static VALUE (*dll_rb_enc_str_new) (const char*, long, rb_encoding*);
 static VALUE (*dll_rb_sprintf) (const char*, ...);
+static void (*ruby_init_stack)(VALUE*);
 #endif
 
-#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
+#ifdef RUBY19_OR_LATER
 static SIGNED_VALUE rb_num2long_stub(VALUE x)
 {
     return dll_rb_num2long(x);
@@ -336,8 +341,7 @@ static struct
     {"rb_str_concat", (RUBY_PROC*)&dll_rb_str_concat},
     {"rb_str_new", (RUBY_PROC*)&dll_rb_str_new},
     {"rb_str_new2", (RUBY_PROC*)&dll_rb_str_new2},
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19 \
+#ifdef RUBY19_OR_LATER
-    || defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
     {"rb_errinfo", (RUBY_PROC*)&dll_rb_errinfo},
 #else
     {"ruby_errinfo", (RUBY_PROC*)&dll_ruby_errinfo},
@@ -360,15 +364,14 @@ static struct
     {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
     {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
 #endif
-#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
+#ifdef RUBY19_OR_LATER
     {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},
-#endif
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
     {"ruby_script", (RUBY_PROC*)&dll_ruby_script},
     {"rb_enc_find_index", (RUBY_PROC*)&dll_rb_enc_find_index},
     {"rb_enc_find", (RUBY_PROC*)&dll_rb_enc_find},
     {"rb_enc_str_new", (RUBY_PROC*)&dll_rb_enc_str_new},
     {"rb_sprintf", (RUBY_PROC*)&dll_rb_sprintf},
+    {"ruby_init_stack", (RUBY_PROC*)&dll_ruby_init_stack},
 #endif
     {"", NULL},
 };
@@ -467,7 +470,7 @@ void ex_ruby(exarg_T *eap)
     static VALUE
 vim_str2rb_enc_str(const char *s)
 {
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
     int isnum;
     long lval;
     char_u *sval;
@@ -489,7 +492,7 @@ vim_str2rb_enc_str(const char *s)
     static VALUE
 eval_enc_string_protect(const char *str, int *state)
 {
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
     int isnum;
     long lval;
     char_u *sval;
@@ -591,16 +594,16 @@ static int ensure_ruby_initialized(void)
 	    char *argv[] = {"gvim.exe"};
 	    NtInitialize(&argc, &argv);
 #endif
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
 	    RUBY_INIT_STACK;
 #endif
 	    ruby_init();
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
 	    ruby_script("vim-ruby");
 #endif
 	    ruby_init_loadpath();
 	    ruby_io_init();
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19
+#ifdef RUBY19_OR_LATER
 	    rb_enc_find_index("encdb");
 #endif
 	    ruby_vim_init();
@@ -657,8 +660,7 @@ static void error_print(int state)
 	break;
     case TAG_RAISE:
     case TAG_FATAL:
-#if defined(RUBY_VERSION) && RUBY_VERSION >= 19 \
+#ifdef RUBY19_OR_LATER
-    || defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
 	eclass = CLASS_OF(rb_errinfo());
 	einfo = rb_obj_as_string(rb_errinfo());
 #else
@@ -720,7 +722,8 @@ static VALUE vim_to_ruby(typval_T *tv)
 
     if (tv->v_type == VAR_STRING)
     {
-        result = rb_str_new2((char *)tv->vval.v_string);
+	result = rb_str_new2((char *)(tv->vval.v_string == NULL
+						   ? "" : tv->vval.v_string));
     }
     else if (tv->v_type == VAR_NUMBER)
     {

src/version.c

@@ -681,6 +681,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    400,
 /**/
     399,
 /**/