diff --git a/ChangeLog b/ChangeLog
index a091d20edb..f4d6f4937f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri May 28 10:40:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/mkmf.rb (checking_for): ignore toplevel.
+
 Wed May 26 19:55:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* file.c (file_expand_path): revert a part of r22392. it's commit miss.
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index aa720ba962..b259f00d25 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -682,7 +682,7 @@ end
 # Internal use only.
 #
 def checking_for(m, fmt = nil)
-  f = caller[0][/in `(.*)'$/, 1] and f << ": " #` for vim #'
+  f = caller[0][/in `([^<].*)'$/, 1] and f << ": " #` for vim #'
   m = "checking #{/\Acheck/ =~ f ? '' : 'for '}#{m}... "
   message "%s", m
   a = r = nil
diff --git a/version.h b/version.h
index b8a7ebc1e3..39f2da3be7 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.8.8"
-#define RUBY_RELEASE_DATE "2010-05-26"
+#define RUBY_RELEASE_DATE "2010-05-28"
 #define RUBY_VERSION_CODE 188
-#define RUBY_RELEASE_CODE 20100526
+#define RUBY_RELEASE_CODE 20100528
 #define RUBY_PATCHLEVEL -1
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 8
 #define RUBY_RELEASE_YEAR 2010
 #define RUBY_RELEASE_MONTH 5
-#define RUBY_RELEASE_DAY 26
+#define RUBY_RELEASE_DAY 28
 
 #define NO_STRING_LITERAL_CONCATENATION 1
 #ifdef RUBY_EXTERN