Index: mkconfig.rb
===================================================================
--- mkconfig.rb	(revision 567)
+++ mkconfig.rb	(working copy)
@@ -37,11 +37,13 @@
 has_version = false
 File.foreach "config.status" do |line|
   next if /^#/ =~ line
-  if /^s[%,]@program_transform_name@[%,]s,(.*)/ =~ line
+  mkbang = /(?:#{Regexp::quote("|#_!!_#|")})?/
+  case line
+  when /^s[%,]@program_transform_name@[%,]s,(.*)/
     next if $install_name
     ptn = $1.sub(/\$\$/, '$').split(/,/)	#'
     v_fast << "  CONFIG[\"ruby_install_name\"] = \"" + "ruby".sub(/#{ptn[0]}/,ptn[1]) + "\"\n"
-  elsif /^s[%,]@(\w+)@[%,](.*)[%,]/ =~ line
+  when /^s[%,]@(\w+)@[%,]#{mkbang}(.*)[%,]/
     name = $1
     val = $2 || ""
     next if /^(?:ac_.*|DEFS|configure_input)$/ =~ name
@@ -59,7 +61,7 @@
       v_others << v
     end
     has_version = true if name == "MAJOR"
-  elsif /^(?:ac_given_)?INSTALL=(.*)/ =~ line
+  when /^(?:ac_given_)?INSTALL=(.*)/
     v_fast << "  CONFIG[\"INSTALL\"] = " + $1 + "\n"
   end
 #  break if /^CEOF/