Implement if statements

Rakefile

@@ -1,5 +1,8 @@
+# frozen_string_literal: true
+
 require 'open3'
 require 'rake/clean'
+require 'term/ansicolor'
 
 CLOBBER.include 'build'
 
@@ -10,7 +13,7 @@ QEMU = 'qemu-riscv32'
 def assemble_stage(output, compiler, source)
   arguments = [QEMU, '-L', SYSROOT, *compiler]
 
-  puts(arguments * ' ')
+  puts Term::ANSIColor.green(arguments * ' ')
   puts
   Open3.popen2(*arguments) do |qemu_in, qemu_out|
     qemu_in.write File.read(*source)
@@ -27,7 +30,7 @@ task default: ['build/stage2b', 'build/stage2b.s', 'boot/stage2.elna'] do |t|
 
   cat_arguments = ['cat', source]
   compiler_arguments = [QEMU, '-L', SYSROOT, exe]
-  diff_arguments = ['diff', '-Nur', previous_output, '-']
+  diff_arguments = ['diff', '-Nur', '--text', previous_output, '-']
   Open3.pipeline(cat_arguments, compiler_arguments, diff_arguments)
 end
 
@@ -70,7 +73,8 @@ task :statistics do
     word.start_with?('(*') ||
       word.start_with?('*)') ||
       ('A'..'Z').include?(word[0]) ||
-      /^[[:alpha:]][[:digit:]]$/.match(word)
+      /^[[:alpha:]][[:digit:]]$/.match(word) ||
+      ['end', 'if'].include?(word)
   end
 
   lines = File.read('boot/stage2.elna')