Add --colorize and --nocolorize options to IRB

doc/irb/irb.rd.ja

@@ -54,6 +54,8 @@ irbの使い方は, Rubyさえ知っていればいたって簡単です. 基本
   --noreadline	    readlineライブラリを利用しない. デフォルトの動作は,
 		    inf-ruby-mode以外でreadlineライブラリを利用しよう
 		    とする.
+  --colorize	    色付けを利用する.
+  --nocolorize	    色付けを利用しない.
   --prompt prompt-mode
   --prompt-mode prompt-mode
 		    プロンプトモードを切替えます. 現在定義されているプ

lib/irb.rb

@@ -62,6 +62,8 @@ require "irb/version"
 #     --noinspect       Don't use inspect for output
 #     --readline        Use Readline extension module
 #     --noreadline      Don't use Readline extension module
+#     --colorize        Use colorization
+#     --nocolorize      Don't use colorization
 #     --prompt prompt-mode
 #     --prompt-mode prompt-mode
 #                       Switch prompt mode. Pre-defined prompt modes are
@@ -96,6 +98,7 @@ require "irb/version"
 #     IRB.conf[:BACK_TRACE_LIMIT]=16
 #     IRB.conf[:USE_LOADER] = false
 #     IRB.conf[:USE_READLINE] = nil
+#     IRB.conf[:USE_COLORIZE] = true
 #     IRB.conf[:USE_TRACER] = false
 #     IRB.conf[:IGNORE_SIGINT] = true
 #     IRB.conf[:IGNORE_EOF] = false

lib/irb/context.rb

@@ -142,6 +142,10 @@ module IRB
     #
     # See #use_readline= for more information.
     attr_reader :use_readline
+    # Whether colorization is enabled or not.
+    #
+    # A copy of the default <code>IRB.conf[:USE_COLORIZE]</code>
+    attr_reader :use_colorize
     # A copy of the default <code>IRB.conf[:INSPECT_MODE]</code>
     attr_reader :inspect_mode
 
@@ -222,6 +226,8 @@ module IRB
 
     # Alias for #use_readline
     alias use_readline? use_readline
+    # Alias for #use_colorize
+    alias use_colorize? use_colorize
     # Alias for #rc
     alias rc? rc
     alias ignore_sigint? ignore_sigint

lib/irb/init.rb

@@ -44,6 +44,7 @@ module IRB # :nodoc:
     @CONF[:IRB_RC] = nil
 
     @CONF[:USE_READLINE] = false unless defined?(ReadlineInputMethod)
+    @CONF[:USE_COLORIZE] = true
     @CONF[:INSPECT_MODE] = true
     @CONF[:USE_TRACER] = false
     @CONF[:USE_LOADER] = false
@@ -171,6 +172,10 @@ module IRB # :nodoc:
         @CONF[:VERBOSE] = true
       when "--noverbose"
         @CONF[:VERBOSE] = false
+      when "--colorize"
+        @CONF[:USE_COLORIZE] = true
+      when "--nocolorize"
+        @CONF[:USE_COLORIZE] = false
       when /^--prompt-mode(?:=(.+))?/, /^--prompt(?:=(.+))?/
         opt = $1 || argv.shift
         prompt_mode = opt.upcase.tr("-", "_").intern

lib/irb/inspector.rb

@@ -107,7 +107,7 @@ module IRB # :nodoc:
   Inspector.def_inspector([true, :p, :inspect]){|v|
     begin
       result = v.inspect
-      if Color.inspect_colorable?(v)
+      if IRB.conf[:MAIN_CONTEXT]&.use_colorize? && Color.inspect_colorable?(v)
         result = Color.colorize_code(result)
       end
       result
@@ -117,7 +117,7 @@ module IRB # :nodoc:
   }
   Inspector.def_inspector([:pp, :pretty_inspect], proc{require "pp"}){|v|
     result = v.pretty_inspect.chomp
-    if Color.inspect_colorable?(v)
+    if IRB.conf[:MAIN_CONTEXT]&.use_colorize? && Color.inspect_colorable?(v)
       result = Color.colorize_code(result)
     end
     result

lib/irb/lc/help-message

@@ -26,6 +26,8 @@ Usage:  irb.rb [options] [programfile] [arguments]
   --noinspect	    Don't use inspect for output
   --readline        Use Readline extension module
   --noreadline	    Don't use Readline extension module
+  --colorize        Use colorization
+  --nocolorize      Don't use colorization
   --prompt prompt-mode/--prompt-mode prompt-mode
 		    Switch prompt mode. Pre-defined prompt modes are
 		    `default', `simple', `xmp' and `inf-ruby'

lib/irb/lc/ja/help-message

@@ -25,6 +25,8 @@ Usage:  irb.rb [options] [programfile] [arguments]
   --noinspect	    結果出力にinspectを用いない.
   --readline	    readlineライブラリを利用する.
   --noreadline	    readlineライブラリを利用しない.
+  --colorize	    色付けを利用する.
+  --nocolorize	    色付けを利用しない.
   --prompt prompt-mode/--prompt-mode prompt-mode
 		    プロンプトモードを切替えます. 現在定義されているプ
 		    ロンプトモードは, default, simple, xmp, inf-rubyが

lib/irb/workspace.rb

@@ -131,13 +131,17 @@ EOF
           return
         end
       end
-      lines = Color.colorize_code(code).lines
+      lines = IRB.conf[:MAIN_CONTEXT]&.use_colorize? ? Color.colorize_code(code).lines : code.lines
       pos -= 1
 
       start_pos = [pos - 5, 0].max
       end_pos   = [pos + 5, lines.size - 1].min
 
+      if IRB.conf[:MAIN_CONTEXT]&.use_colorize?
         fmt = " %2s #{Color.colorize("%#{end_pos.to_s.length}d", [:BLUE, :BOLD])}: %s"
+      else
+        fmt = " %2s %#{end_pos.to_s.length}d: %s"
+      end
       body = (start_pos..end_pos).map do |current_pos|
         sprintf(fmt, pos == current_pos ? '=>' : '', current_pos + 1, lines[current_pos])
       end.join("")