2 files changed, 11 insertions, 23 deletions
diff --git a/mrbgems/mruby-string-utf8/src/string.c b/mrbgems/mruby-string-utf8/src/string.c
index a1b779f95..e21101df9 100644
--- a/mrbgems/mruby-string-utf8/src/string.c
+++ b/mrbgems/mruby-string-utf8/src/string.c
@@ -3,8 +3,8 @@
 #include "mruby/class.h"
 #include "mruby/string.h"
 #include "mruby/range.h"
+#include "mruby/numeric.h"
 #include "mruby/re.h"
-#include <ctype.h>
 #include <string.h>
 
 static const char utf8len_codepage[256] =
@@ -106,21 +106,6 @@ mrb_str_size(mrb_state *mrb, mrb_value str)
 
 #define RSTRING_LEN_UTF8(s) mrb_utf8_strlen(s, -1)
 
-static mrb_value
-noregexp(mrb_state *mrb, mrb_value self)
-{
-  mrb_raise(mrb, E_NOTIMP_ERROR, "Regexp class not implemented");
-  return mrb_nil_value();
-}
-
-static void
-regexp_check(mrb_state *mrb, mrb_value obj)
-{
-  if (mrb_regexp_p(mrb, obj)) {
-    noregexp(mrb, obj);
-  }
-}
-
 static inline mrb_int
 mrb_memsearch_qs(const unsigned char *xs, mrb_int m, const unsigned char *ys, mrb_int n)
 {
@@ -270,8 +255,10 @@ mrb_str_aref(mrb_state *mrb, mrb_value str, mrb_value indx)
 {
   mrb_int idx;
 
-  regexp_check(mrb, indx);
+  mrb_regexp_check(mrb, indx);
   switch (mrb_type(indx)) {
+    case MRB_TT_FLOAT:
+      indx = mrb_flo_to_fixnum(mrb, indx);
     case MRB_TT_FIXNUM:
       idx = mrb_fixnum(indx);
 
@@ -315,7 +302,7 @@ mrb_str_aref_m(mrb_state *mrb, mrb_value str)
 
   argc = mrb_get_args(mrb, "o|o", &a1, &a2);
   if (argc == 2) {
-    regexp_check(mrb, a1);
+    mrb_regexp_check(mrb, a1);
     return str_substr(mrb, str, mrb_fixnum(a1), mrb_fixnum(a2));
   }
   if (argc != 1) {
@@ -346,7 +333,7 @@ mrb_str_index_m(mrb_state *mrb, mrb_value str)
       sub = mrb_nil_value();
 
   }
-  regexp_check(mrb, sub);
+  mrb_regexp_check(mrb, sub);
   if (pos < 0) {
     pos += RSTRING_LEN(str);
     if (pos < 0) {
@@ -425,7 +412,7 @@ mrb_str_rindex_m(mrb_state *mrb, mrb_value str)
     if (pos < 0) {
       pos += len;
       if (pos < 0) {
-        regexp_check(mrb, sub);
+        mrb_regexp_check(mrb, sub);
         return mrb_nil_value();
       }
     }
@@ -438,7 +425,7 @@ mrb_str_rindex_m(mrb_state *mrb, mrb_value str)
     else
       sub = mrb_nil_value();
   }
-  regexp_check(mrb, sub);
+  mrb_regexp_check(mrb, sub);
 
   if (mrb_type(sub) == MRB_TT_FIXNUM) {
     sub = mrb_fixnum_chr(mrb, sub);
@@ -548,7 +535,7 @@ mrb_str_split_m(mrb_state *mrb, mrb_value str)
       }
     }
     else {
-      noregexp(mrb, str);
+      mrb_noregexp(mrb, str);
     }
   }
 
@@ -618,7 +605,7 @@ mrb_str_split_m(mrb_state *mrb, mrb_value str)
     beg = ptr - temp;
   }
   else {
-    noregexp(mrb, str);
+    mrb_noregexp(mrb, str);
   }
   if (RSTRING_LEN(str) > 0 && (lim_p || RSTRING_LEN(str) > beg || lim < 0)) {
     if (RSTRING_LEN(str) == beg) {
diff --git a/mrbgems/mruby-string-utf8/test/string.rb b/mrbgems/mruby-string-utf8/test/string.rb
index 5b4180037..551273106 100644
--- a/mrbgems/mruby-string-utf8/test/string.rb
+++ b/mrbgems/mruby-string-utf8/test/string.rb
@@ -9,6 +9,7 @@ assert('String#[]') do
   assert_equal "世界", "こんにちは世界"[-2..-1]
   assert_equal "んに", "こんにちは世界"[1,2]
   assert_equal "世", "こんにちは世界"["世"]
+  assert_equal 'b', 'abc'[1.1]
 end
 
 assert('String#reverse', '15.2.10.5.29') do