Add operators to `presym` from `Rakefile`.

Rakefile

@@ -112,35 +112,7 @@ rbfiles = (Dir.glob("#{MRUBY_ROOT}/mrblib/*.rb")+
           Dir.glob("#{MRUBY_ROOT}/mrbgems/*/mrblib/*.rb")+
           Dir.glob("#{MRUBY_ROOT}/build/*/mrbgems/**/mrblib/*.rb")).uniq
 presym_file="#{MRUBY_ROOT}/build/presym"
-
-desc "preallocated symbols"
-file presym_file => cfiles+rbfiles do
-  csymbols = cfiles.map do |f|
-    src = File.read(f)
-    [src.scan(/intern_lit\([^\n"]*"([^\n "]*)"/),
-     src.scan(/mrb_define_method\([^\n"]*"([^\n"]*)"/),
-     src.scan(/mrb_define_class\([^\n"]*"([^\n"]*)"/),
-     src.scan(/mrb_define_module\([^\n"]*"([^\n"]*)"/),
-     src.scan(/MRB_SYM\((\w+)\)/)]
-  end
-  rbsymbols = rbfiles.map do |f|
-    src = File.read(f)
-    [src.scan(/\bclass +([A-Z]\w*)/),
-     src.scan(/\bmodule +([A-Z]\w*)/),
-     src.scan(/\bdef +(\w+)/)]
-  end
-  symbols = (csymbols+rbsymbols).flatten.uniq.sort
-  presyms = File.readlines(presym_file, chomp: true) rescue []
-  if presyms != symbols
-    File.write(presym_file, symbols.join("\n"))
-  end
-end
-
-presym_inc=presym_file+".inc"
-file presym_inc => presym_file do
-  presyms = File.readlines(presym_file, chomp: true)
-  File.open(presym_inc, "w") do |f|
-    op_table = {
+op_table = {
   "!" => "not",
   "!=" => "neq",
   "!~" => "nmatch",
@@ -171,7 +143,37 @@ file presym_inc => presym_file do
   "|" => "or",
   "||" => "oror",
   "~" => "neg",
-    }
+}
+
+file presym_file => cfiles+rbfiles do
+  csymbols = cfiles.map do |f|
+    src = File.read(f)
+    [src.scan(/intern_lit\([^\n"]*"([^\n "]*)"/),
+     src.scan(/mrb_define_method\([^\n"]*"([^\n"]*)"/),
+     src.scan(/mrb_define_class\([^\n"]*"([^\n"]*)"/),
+     src.scan(/mrb_define_module\([^\n"]*"([^\n"]*)"/),
+     src.scan(/MRB_SYM\((\w+)\)/),
+     src.scan(/MRB_QSYM\((\w+)\)/).map{|x,|
+       x.sub!(/_p$/, "?") || x.sub!(/_b$/, "!") || x.sub!(/_e$/, "=") || x.sub!(/^a_/, "@") || x.sub!(/^d_/, "$")
+     }.compact]
+  end
+  rbsymbols = rbfiles.map do |f|
+    src = File.read(f)
+    [src.scan(/\bclass +([A-Z]\w*)/),
+     src.scan(/\bmodule +([A-Z]\w*)/),
+     src.scan(/\bdef +(\w+)/)]
+  end
+  symbols = (csymbols+rbsymbols+op_table.keys).flatten.compact.uniq.sort
+  presyms = File.readlines(presym_file, chomp: true) rescue []
+  if presyms != symbols
+    File.write(presym_file, symbols.join("\n"))
+  end
+end
+
+presym_inc=presym_file+".inc"
+file presym_inc => presym_file do
+  presyms = File.readlines(presym_file, chomp: true)
+  File.open(presym_inc, "w") do |f|
     f.print "/* MRB_PRESYM_CSYM(sym, num) - symbol which is valid C id name */\n"
     f.print "/* MRB_PRESYM_QSYM(sym, name, num) - symbol with alias name */\n"
     f.print "/* MRB_PRESYM_SYM(sym, num) - symbol which is not valid C id */\n\n"
@@ -186,6 +188,9 @@ file presym_inc => presym_file do
       elsif /\!\Z/ =~ sym
         s = sym.dup; s[-1] = "_b"
         f.print "MRB_PRESYM_QSYM(#{sym}, #{s}, #{i+1})\n"
+      elsif /\=\Z/ =~ sym
+        s = sym.dup; s[-1] = "_e"
+        f.print "MRB_PRESYM_QSYM(#{sym}, #{s}, #{i+1})\n"
       elsif /\A@/ =~ sym
         s = sym.dup; s[0] = "a_"
         f.print "MRB_PRESYM_QSYM(#{sym}, #{s}, #{i+1})\n"
@@ -200,8 +205,9 @@ file presym_inc => presym_file do
   end
 end
 
+desc "preallocated symbols"
 task :gensym => presym_inc
-depfiles.unshift "gensym"
+#task :all => :gensym
 
 depfiles += MRuby.targets.map { |n, t|
   t.libraries