diff --git a/ChangeLog b/ChangeLog
index 1887f0e068..016111311c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Fri Dec 14 00:54:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* re.c (rb_reg_initialize): embedded string may override encoding
+	  of the regular expression.
+
+	* re.c (rb_reg_initialize): fix encoding of regular expression if
+	  embedded string has its own encoding specified.
+
 Thu Dec 13 22:16:46 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* encoding.c (rb_enc_compatible): encoding should never fall back
diff --git a/re.c b/re.c
index 330590ea99..4559d02be5 100644
--- a/re.c
+++ b/re.c
@@ -1954,6 +1954,7 @@ rb_reg_initialize(VALUE obj, const char *s, int len, rb_encoding *enc,
     struct RRegexp *re = RREGEXP(obj);
     VALUE unescaped;
     rb_encoding *fixed_enc = 0;
+    rb_encoding *d_enc = rb_default_encoding();
 
     if (!OBJ_TAINTED(obj) && rb_safe_level() >= 4)
 	rb_raise(rb_eSecurityError, "Insecure: can't modify regexp");
@@ -1969,15 +1970,19 @@ rb_reg_initialize(VALUE obj, const char *s, int len, rb_encoding *enc,
     if (unescaped == Qnil)
         return -1;
 
-    if (fixed_enc && fixed_enc != enc) {
-        strcpy(err, "character encodings differ");
-        return -1;
+    if (fixed_enc) {
+	if (fixed_enc != enc && enc != d_enc && fixed_enc != d_enc) {
+	    strcpy(err, "character encodings differ");
+	    return -1;
+	}
+        if (fixed_enc != d_enc) {
+	    options |= ARG_ENCODING_FIXED;
+	    enc = fixed_enc;
+	}
+    }
+    else if (!(options & ARG_ENCODING_FIXED)) {
+        enc = d_enc;
     }
-
-    if (fixed_enc)
-        enc = fixed_enc;
-    else if (!(options & ARG_ENCODING_FIXED))
-        enc = rb_default_encoding();
     
     rb_enc_associate((VALUE)re, enc);
     if ((options & ARG_ENCODING_FIXED) || fixed_enc) {
diff --git a/version.h b/version.h
index 027c64de08..daf268fedc 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2007-12-13"
+#define RUBY_RELEASE_DATE "2007-12-14"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20071213
+#define RUBY_RELEASE_CODE 20071214
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2007
 #define RUBY_RELEASE_MONTH 12
-#define RUBY_RELEASE_DAY 13
+#define RUBY_RELEASE_DAY 14
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];