* lib/cmath.rb: fixed indent.

* lib/drb/ssl.rb: ditto.
* lib/irb/**/*.rb: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47112 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 329 insertions, 329 deletions

diff --git a/lib/irb/ruby-lex.rb b/lib/irb/ruby-lex.rb
index bf1009cf30..8bb7edbbaf 100644
--- a/lib/irb/ruby-lex.rb
+++ b/lib/irb/ruby-lex.rb
@@ -22,7 +22,7 @@ class RubyLex
   def_exception(:TkReading2TokenNoKey, "key nothing(key='%s')")
   def_exception(:TkSymbol2TokenNoKey, "key nothing(key='%s')")
   def_exception(:TkReading2TokenDuplicateError,
-		"key duplicate(token_n='%s', key='%s')")
+                "key duplicate(token_n='%s', key='%s')")
   def_exception(:SyntaxError, "%s")
 
   def_exception(:TerminateLineInput, "Terminate Line Input")
@@ -154,9 +154,9 @@ class RubyLex
     if c == "\n"
       @line_no -= 1
       if idx = @readed.rindex("\n")
-	@char_no = idx + 1
+        @char_no = idx + 1
       else
-	@char_no = @base_char_no + @readed.size
+        @char_no = @base_char_no + @readed.size
       end
     else
       @char_no -= 1
@@ -231,41 +231,41 @@ class RubyLex
     initialize_input
     catch(:TERM_INPUT) do
       loop do
-	begin
-	  @continue = false
-	  prompt
-	  unless l = lex
-	    throw :TERM_INPUT if @line == ''
-	  else
-	    @line.concat l
-	    if @ltype or @continue or @indent > 0
-	      next
-	    end
-	  end
-	  if @line != "\n"
+        begin
+          @continue = false
+          prompt
+          unless l = lex
+            throw :TERM_INPUT if @line == ''
+          else
+            @line.concat l
+            if @ltype or @continue or @indent > 0
+              next
+            end
+          end
+          if @line != "\n"
             @line.force_encoding(@io.encoding)
-	    yield @line, @exp_line_no
-	  end
-	  break unless l
-	  @line = ''
-	  @exp_line_no = @line_no
-
-	  @indent = 0
-	  @indent_stack = []
-	  prompt
-	rescue TerminateLineInput
-	  initialize_input
-	  prompt
-	  get_readed
-	end
+            yield @line, @exp_line_no
+          end
+          break unless l
+          @line = ''
+          @exp_line_no = @line_no
+
+          @indent = 0
+          @indent_stack = []
+          prompt
+        rescue TerminateLineInput
+          initialize_input
+          prompt
+          get_readed
+        end
       end
     end
   end
 
   def lex
     until (((tk = token).kind_of?(TkNL) || tk.kind_of?(TkEND_OF_SCRIPT)) &&
-	     !@continue or
-	     tk.nil?)
+        !@continue or
+        tk.nil?)
       #p tk
       #p @lex_state
       #p self
@@ -287,13 +287,13 @@ class RubyLex
     @prev_char_no = @char_no
     begin
       begin
-	tk = @OP.match(self)
-	@space_seen = tk.kind_of?(TkSPACE)
-	@lex_state = EXPR_END if @post_symbeg && tk.kind_of?(TkOp)
-	@post_symbeg = tk.kind_of?(TkSYMBEG)
+        tk = @OP.match(self)
+        @space_seen = tk.kind_of?(TkSPACE)
+        @lex_state = EXPR_END if @post_symbeg && tk.kind_of?(TkOp)
+        @post_symbeg = tk.kind_of?(TkSYMBEG)
       rescue SyntaxError
-	raise if @exception_on_syntax_error
-	tk = TkError.new(@seek, @line_no, @char_no)
+        raise if @exception_on_syntax_error
+        tk = TkError.new(@seek, @line_no, @char_no)
       end
     end while @skip_space and tk.kind_of?(TkSPACE)
     if @readed_auto_clean_up
@@ -361,12 +361,12 @@ class RubyLex
     end
 
     @OP.def_rule("=begin",
-		 proc{|op, io| @prev_char_no == 0 && peek(0) =~ /\s/}) do
+                 proc{|op, io| @prev_char_no == 0 && peek(0) =~ /\s/}) do
       |op, io|
       @ltype = "="
       until getc == "\n"; end
       until peek_equal?("=end") && peek(4) =~ /\s/
-	until getc == "\n"; end
+        until getc == "\n"; end
       end
       gets
       @ltype = nil
@@ -377,15 +377,15 @@ class RubyLex
       print "\\n\n" if RubyLex.debug?
       case @lex_state
       when EXPR_BEG, EXPR_FNAME, EXPR_DOT
-	@continue = true
+        @continue = true
       else
-	@continue = false
-	@lex_state = EXPR_BEG
-	until (@indent_stack.empty? ||
-	       [TkLPAREN, TkLBRACK, TkLBRACE,
-		 TkfLPAREN, TkfLBRACK, TkfLBRACE].include?(@indent_stack.last))
-	  @indent_stack.pop
-	end
+        @continue = false
+        @lex_state = EXPR_BEG
+        until (@indent_stack.empty? ||
+            [TkLPAREN, TkLBRACK, TkLBRACE,
+             TkfLPAREN, TkfLBRACK, TkfLBRACE].include?(@indent_stack.last))
+          @indent_stack.pop
+        end
       end
       @here_header = false
       @here_readed = []
@@ -393,17 +393,17 @@ class RubyLex
     end
 
     @OP.def_rules("*", "**",
-		  "=", "==", "===",
-		  "=~", "<=>",
-		  "<", "<=",
-		  ">", ">=", ">>",
-		  "!", "!=", "!~") do
+                  "=", "==", "===",
+                  "=~", "<=>",
+                  "<", "<=",
+                  ">", ">=", ">>",
+                  "!", "!=", "!~") do
       |op, io|
       case @lex_state
       when EXPR_FNAME, EXPR_DOT
-	@lex_state = EXPR_ARG
+        @lex_state = EXPR_ARG
       else
-	@lex_state = EXPR_BEG
+        @lex_state = EXPR_BEG
       end
       Token(op)
     end
@@ -412,20 +412,20 @@ class RubyLex
       |op, io|
       tk = nil
       if @lex_state != EXPR_END && @lex_state != EXPR_CLASS &&
-	  (@lex_state != EXPR_ARG || @space_seen)
-	c = peek(0)
-	if /\S/ =~ c && (/["'`]/ =~ c || /\w/ =~ c || c == "-")
-	  tk = identify_here_document
-	end
+          (@lex_state != EXPR_ARG || @space_seen)
+        c = peek(0)
+        if /\S/ =~ c && (/["'`]/ =~ c || /\w/ =~ c || c == "-")
+          tk = identify_here_document
+        end
       end
       unless tk
-	tk = Token(op)
-	case @lex_state
-	when EXPR_FNAME, EXPR_DOT
-	  @lex_state = EXPR_ARG
-	else
-	  @lex_state = EXPR_BEG
-	end
+        tk = Token(op)
+        case @lex_state
+        when EXPR_FNAME, EXPR_DOT
+          @lex_state = EXPR_ARG
+        else
+          @lex_state = EXPR_BEG
+        end
       end
       tk
     end
@@ -438,31 +438,31 @@ class RubyLex
     @OP.def_rules("`") do
       |op, io|
       if @lex_state == EXPR_FNAME
-	@lex_state = EXPR_END
-	Token(op)
+        @lex_state = EXPR_END
+        Token(op)
       else
-	identify_string(op)
+        identify_string(op)
       end
     end
 
     @OP.def_rules('?') do
       |op, io|
       if @lex_state == EXPR_END
-	@lex_state = EXPR_BEG
-	Token(TkQUESTION)
+        @lex_state = EXPR_BEG
+        Token(TkQUESTION)
       else
-	ch = getc
-	if @lex_state == EXPR_ARG && ch =~ /\s/
-	  ungetc
-	  @lex_state = EXPR_BEG;
-	  Token(TkQUESTION)
-	else
-	  if (ch == '\\')
-	    read_escape
-	  end
-	  @lex_state = EXPR_END
-	  Token(TkINTEGER)
-	end
+        ch = getc
+        if @lex_state == EXPR_ARG && ch =~ /\s/
+          ungetc
+          @lex_state = EXPR_BEG;
+          Token(TkQUESTION)
+        else
+          if (ch == '\\')
+            read_escape
+          end
+          @lex_state = EXPR_END
+          Token(TkINTEGER)
+        end
       end
     end
 
@@ -473,7 +473,7 @@ class RubyLex
     end
 
     @OP.def_rules("+=", "-=", "*=", "**=",
-		  "&=", "|=", "^=", "<<=", ">>=", "||=", "&&=") do
+                  "&=", "|=", "^=", "<<=", ">>=", "||=", "&&=") do
       |op, io|
       @lex_state = EXPR_BEG
       op =~ /^(.*)=$/
@@ -495,18 +495,18 @@ class RubyLex
     @OP.def_rules("+", "-") do
       |op, io|
       catch(:RET) do
-	if @lex_state == EXPR_ARG
-	  if @space_seen and peek(0) =~ /[0-9]/
-	    throw :RET, identify_number
-	  else
-	    @lex_state = EXPR_BEG
-	  end
-	elsif @lex_state != EXPR_END and peek(0) =~ /[0-9]/
-	  throw :RET, identify_number
-	else
-	  @lex_state = EXPR_BEG
-	end
-	Token(op)
+        if @lex_state == EXPR_ARG
+          if @space_seen and peek(0) =~ /[0-9]/
+            throw :RET, identify_number
+          else
+            @lex_state = EXPR_BEG
+          end
+        elsif @lex_state != EXPR_END and peek(0) =~ /[0-9]/
+          throw :RET, identify_number
+        else
+          @lex_state = EXPR_BEG
+        end
+        Token(op)
       end
     end
 
@@ -514,12 +514,12 @@ class RubyLex
       |op, io|
       @lex_state = EXPR_BEG
       if peek(0) =~ /[0-9]/
-	ungetc
-	identify_number
+        ungetc
+        identify_number
       else
-	# for "obj.if" etc.
-	@lex_state = EXPR_DOT
-	Token(TkDOT)
+        # for "obj.if" etc.
+        @lex_state = EXPR_DOT
+        Token(TkDOT)
       end
     end
 
@@ -544,11 +544,11 @@ class RubyLex
     @OP.def_rule(":") do
       |op, io|
       if @lex_state == EXPR_END || peek(0) =~ /\s/
-	@lex_state = EXPR_BEG
-	Token(TkCOLON)
+        @lex_state = EXPR_BEG
+        Token(TkCOLON)
       else
-	@lex_state = EXPR_FNAME
-	Token(TkSYMBEG)
+        @lex_state = EXPR_FNAME
+        Token(TkSYMBEG)
       end
     end
 
@@ -556,27 +556,27 @@ class RubyLex
        |op, io|
 #      p @lex_state.id2name, @space_seen
       if @lex_state == EXPR_BEG or @lex_state == EXPR_ARG && @space_seen
-	@lex_state = EXPR_BEG
-	Token(TkCOLON3)
+        @lex_state = EXPR_BEG
+        Token(TkCOLON3)
       else
-	@lex_state = EXPR_DOT
-	Token(TkCOLON2)
+        @lex_state = EXPR_DOT
+        Token(TkCOLON2)
       end
     end
 
     @OP.def_rule("/") do
       |op, io|
       if @lex_state == EXPR_BEG || @lex_state == EXPR_MID
-	identify_string(op)
+        identify_string(op)
       elsif peek(0) == '='
-	getc
-	@lex_state = EXPR_BEG
-	Token(TkOPASGN, "/") #/)
+        getc
+        @lex_state = EXPR_BEG
+        Token(TkOPASGN, "/") #/)
       elsif @lex_state == EXPR_ARG and @space_seen and peek(0) !~ /\s/
-	identify_string(op)
+        identify_string(op)
       else
-	@lex_state = EXPR_BEG
-	Token("/") #/)
+        @lex_state = EXPR_BEG
+        Token("/") #/)
       end
     end
 
@@ -601,9 +601,9 @@ class RubyLex
       |op, io|
       @lex_state = EXPR_BEG
       until (@indent_stack.empty? ||
-	     [TkLPAREN, TkLBRACK, TkLBRACE,
-	       TkfLPAREN, TkfLBRACK, TkfLBRACE].include?(@indent_stack.last))
-	@indent_stack.pop
+          [TkLPAREN, TkLBRACK, TkLBRACE,
+           TkfLPAREN, TkfLBRACK, TkfLBRACE].include?(@indent_stack.last))
+        @indent_stack.pop
       end
       Token(op)
     end
@@ -624,11 +624,11 @@ class RubyLex
       |op, io|
       @indent += 1
       if @lex_state == EXPR_BEG || @lex_state == EXPR_MID
-	@lex_state = EXPR_BEG
-	tk_c = TkfLPAREN
+        @lex_state = EXPR_BEG
+        tk_c = TkfLPAREN
       else
-	@lex_state = EXPR_BEG
-	tk_c = TkLPAREN
+        @lex_state = EXPR_BEG
+        tk_c = TkLPAREN
       end
       @indent_stack.push tk_c
       Token(tk_c)
@@ -650,16 +650,16 @@ class RubyLex
       |op, io|
       @indent += 1
       if @lex_state == EXPR_FNAME
-	tk_c = TkfLBRACK
+        tk_c = TkfLBRACK
       else
-	if @lex_state == EXPR_BEG || @lex_state == EXPR_MID
-	  tk_c = TkLBRACK
-	elsif @lex_state == EXPR_ARG && @space_seen
-	  tk_c = TkLBRACK
-	else
-	  tk_c = TkfLBRACK
-	end
-	@lex_state = EXPR_BEG
+        if @lex_state == EXPR_BEG || @lex_state == EXPR_MID
+          tk_c = TkLBRACK
+        elsif @lex_state == EXPR_ARG && @space_seen
+          tk_c = TkLBRACK
+        else
+          tk_c = TkfLBRACK
+        end
+        @lex_state = EXPR_BEG
       end
       @indent_stack.push tk_c
       Token(tk_c)
@@ -669,9 +669,9 @@ class RubyLex
       |op, io|
       @indent += 1
       if @lex_state != EXPR_END && @lex_state != EXPR_ARG
-	tk_c = TkLBRACE
+        tk_c = TkLBRACE
       else
-	tk_c = TkfLBRACE
+        tk_c = TkfLBRACE
       end
       @lex_state = EXPR_BEG
       @indent_stack.push tk_c
@@ -681,27 +681,27 @@ class RubyLex
     @OP.def_rule('\\') do
       |op, io|
       if getc == "\n"
-	@space_seen = true
-	@continue = true
-	Token(TkSPACE)
+        @space_seen = true
+        @continue = true
+        Token(TkSPACE)
       else
-	read_escape
-	Token("\\")
+        read_escape
+        Token("\\")
       end
     end
 
     @OP.def_rule('%') do
       |op, io|
       if @lex_state == EXPR_BEG || @lex_state == EXPR_MID
-	identify_quotation
+        identify_quotation
       elsif peek(0) == '='
-	getc
-	Token(TkOPASGN, :%)
+        getc
+        Token(TkOPASGN, :%)
       elsif @lex_state == EXPR_ARG and @space_seen and peek(0) !~ /\s/
-	identify_quotation
+        identify_quotation
       else
-	@lex_state = EXPR_BEG
-	Token("%") #))
+        @lex_state = EXPR_BEG
+        Token("%") #))
       end
     end
 
@@ -713,10 +713,10 @@ class RubyLex
     @OP.def_rule('@') do
       |op, io|
       if peek(0) =~ /[\w@]/
-	ungetc
-	identify_identifier
+        ungetc
+        identify_identifier
       else
-	Token("@")
+        Token("@")
       end
     end
 
@@ -734,9 +734,9 @@ class RubyLex
       |op, io|
       printf "MATCH: start %s: %s\n", op, io.inspect if RubyLex.debug?
       if peek(0) =~ /[0-9]/
-	t = identify_number
+        t = identify_number
       elsif peek(0) =~ /[^\x00-\/:-@\[-^`{-\x7F]/
-	t = identify_identifier
+        t = identify_identifier
       end
       printf "MATCH: end %s: %s\n", op, io.inspect if RubyLex.debug?
       t
@@ -774,7 +774,7 @@ class RubyLex
     if peek(0) =~ /[$@]/
       token.concat(c = getc)
       if c == "@" and peek(0) == "@"
-	token.concat getc
+        token.concat getc
       end
     end
 
@@ -807,61 +807,61 @@ class RubyLex
 
       token_c, *trans = TkReading2Token[token]
       if token_c
-	# reserved word?
-
-	if (@lex_state != EXPR_BEG &&
-	    @lex_state != EXPR_FNAME &&
-	    trans[1])
-	  # modifiers
-	  token_c = TkSymbol2Token[trans[1]]
-	  @lex_state = trans[0]
-	else
-	  if @lex_state != EXPR_FNAME
-	    if ENINDENT_CLAUSE.include?(token)
-	      # check for ``class = val'' etc.
-	      valid = true
-	      case token
-	      when "class"
-		valid = false unless peek_match?(/^\s*(<<|\w|::)/)
-	      when "def"
-		valid = false if peek_match?(/^\s*(([+\-\/*&\|^]|<<|>>|\|\||\&\&)=|\&\&|\|\|)/)
-	      when "do"
-		valid = false if peek_match?(/^\s*([+\-\/*]?=|\*|<|>|\&)/)
-	      when *ENINDENT_CLAUSE
-		valid = false if peek_match?(/^\s*([+\-\/*]?=|\*|<|>|\&|\|)/)
-	      else
-		# no nothing
-	      end
-	      if valid
-		if token == "do"
-		  if ![TkFOR, TkWHILE, TkUNTIL].include?(@indent_stack.last)
-		    @indent += 1
-		    @indent_stack.push token_c
-		  end
-		else
-		  @indent += 1
-		  @indent_stack.push token_c
-		end
-#		p @indent_stack
-	      end
-
-	    elsif DEINDENT_CLAUSE.include?(token)
-	      @indent -= 1
-	      @indent_stack.pop
-	    end
-	    @lex_state = trans[0]
-	  else
-	    @lex_state = EXPR_END
-	  end
-	end
-	return Token(token_c, token)
+        # reserved word?
+
+        if (@lex_state != EXPR_BEG &&
+            @lex_state != EXPR_FNAME &&
+            trans[1])
+          # modifiers
+          token_c = TkSymbol2Token[trans[1]]
+          @lex_state = trans[0]
+        else
+          if @lex_state != EXPR_FNAME
+            if ENINDENT_CLAUSE.include?(token)
+              # check for ``class = val'' etc.
+              valid = true
+              case token
+              when "class"
+                valid = false unless peek_match?(/^\s*(<<|\w|::)/)
+              when "def"
+                valid = false if peek_match?(/^\s*(([+\-\/*&\|^]|<<|>>|\|\||\&\&)=|\&\&|\|\|)/)
+              when "do"
+                valid = false if peek_match?(/^\s*([+\-\/*]?=|\*|<|>|\&)/)
+              when *ENINDENT_CLAUSE
+                valid = false if peek_match?(/^\s*([+\-\/*]?=|\*|<|>|\&|\|)/)
+              else
+                # no nothing
+              end
+              if valid
+                if token == "do"
+                  if ![TkFOR, TkWHILE, TkUNTIL].include?(@indent_stack.last)
+                    @indent += 1
+                    @indent_stack.push token_c
+                  end
+                else
+                  @indent += 1
+                  @indent_stack.push token_c
+                end
+                #		p @indent_stack
+              end
+
+            elsif DEINDENT_CLAUSE.include?(token)
+              @indent -= 1
+              @indent_stack.pop
+            end
+            @lex_state = trans[0]
+          else
+            @lex_state = EXPR_END
+          end
+        end
+        return Token(token_c, token)
       end
     end
 
     if @lex_state == EXPR_FNAME
       @lex_state = EXPR_END
       if peek(0) == '='
-	token.concat getc
+        token.concat getc
       end
     elsif @lex_state == EXPR_BEG || @lex_state == EXPR_DOT
       @lex_state = EXPR_ARG
@@ -889,13 +889,13 @@ class RubyLex
       lt = ch
       quoted = ""
       while (c = getc) && c != lt
-	quoted.concat c
+        quoted.concat c
       end
     else
       lt = '"'
       quoted = ch.dup
       while (c = getc) && c =~ /\w/
-	quoted.concat c
+        quoted.concat c
       end
       ungetc
     end
@@ -905,9 +905,9 @@ class RubyLex
     while ch = getc
       reserve.push ch
       if ch == "\\"
-	reserve.push ch = getc
+        reserve.push ch = getc
       elsif ch == "\n"
-	break
+        break
       end
     end
 
@@ -922,15 +922,15 @@ class RubyLex
     line = ""
     while ch = getc
       if ch == "\n"
-	if line == quoted
-	  break
-	end
-	line = ""
+        if line == quoted
+          break
+        end
+        line = ""
       else
-	line.concat ch unless indent && line == "" && /\s/ =~ ch
-	if @ltype != "'" && ch == "#" && peek(0) == "{"
-	  identify_string_dvar
-	end
+        line.concat ch unless indent && line == "" && /\s/ =~ ch
+        if @ltype != "'" && ch == "#" && peek(0) == "{"
+          identify_string_dvar
+        end
       end
     end
 
@@ -970,49 +970,49 @@ class RubyLex
       getc
       case peek(0)
       when /[xX]/
-	ch = getc
-	match = /[0-9a-fA-F_]/
+        ch = getc
+        match = /[0-9a-fA-F_]/
       when /[bB]/
-	ch = getc
-	match = /[01_]/
+        ch = getc
+        match = /[01_]/
       when /[oO]/
-	ch = getc
-	match = /[0-7_]/
+        ch = getc
+        match = /[0-7_]/
       when /[dD]/
-	ch = getc
-	match = /[0-9_]/
+        ch = getc
+        match = /[0-9_]/
       when /[0-7]/
-	match = /[0-7_]/
+        match = /[0-7_]/
       when /[89]/
-	RubyLex.fail SyntaxError, "Invalid octal digit"
+        RubyLex.fail SyntaxError, "Invalid octal digit"
       else
-	return Token(TkINTEGER)
+        return Token(TkINTEGER)
       end
 
       len0 = true
       non_digit = false
       while ch = getc
-	if match =~ ch
-	  if ch == "_"
-	    if non_digit
-	      RubyLex.fail SyntaxError, "trailing `#{ch}' in number"
-	    else
-	      non_digit = ch
-	    end
-	  else
-	    non_digit = false
-	    len0 = false
-	  end
-	else
-	  ungetc
-	  if len0
-	    RubyLex.fail SyntaxError, "numeric literal without digits"
-	  end
-	  if non_digit
-	    RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
-	  end
-	  break
-	end
+        if match =~ ch
+          if ch == "_"
+            if non_digit
+              RubyLex.fail SyntaxError, "trailing `#{ch}' in number"
+            else
+              non_digit = ch
+            end
+          else
+            non_digit = false
+            len0 = false
+          end
+        else
+          ungetc
+          if len0
+            RubyLex.fail SyntaxError, "numeric literal without digits"
+          end
+          if non_digit
+            RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
+          end
+          break
+        end
       end
       return Token(TkINTEGER)
     end
@@ -1024,37 +1024,37 @@ class RubyLex
     while ch = getc
       case ch
       when /[0-9]/
-	non_digit = false
+        non_digit = false
       when "_"
-	non_digit = ch
+        non_digit = ch
       when allow_point && "."
-	if non_digit
-	  RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
-	end
-	type = TkFLOAT
-	if peek(0) !~ /[0-9]/
-	  type = TkINTEGER
-	  ungetc
-	  break
-	end
-	allow_point = false
+        if non_digit
+          RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
+        end
+        type = TkFLOAT
+        if peek(0) !~ /[0-9]/
+          type = TkINTEGER
+          ungetc
+          break
+        end
+        allow_point = false
       when allow_e && "e", allow_e && "E"
-	if non_digit
-	  RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
-	end
-	type = TkFLOAT
-	if peek(0) =~ /[+-]/
-	  getc
-	end
-	allow_e = false
-	allow_point = false
-	non_digit = ch
+        if non_digit
+          RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
+        end
+        type = TkFLOAT
+        if peek(0) =~ /[+-]/
+          getc
+        end
+        allow_e = false
+        allow_point = false
+        non_digit = ch
       else
-	if non_digit
-	  RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
-	end
-	ungetc
-	break
+        if non_digit
+          RubyLex.fail SyntaxError, "trailing `#{non_digit}' in number"
+        end
+        ungetc
+        break
       end
     end
     Token(type)
@@ -1067,38 +1067,38 @@ class RubyLex
     begin
       nest = 0
       while ch = getc
-	if @quoted == ch and nest == 0
-	  break
-	elsif @ltype != "'" && ch == "#" && peek(0) == "{"
-	  identify_string_dvar
-	elsif @ltype != "'" && @ltype != "]" && @ltype != ":" and ch == "#"
-	  subtype = true
-	elsif ch == '\\' and @ltype == "'" #'
-	  case ch = getc
-	  when "\\", "\n", "'"
-	  else
-	    ungetc
-	  end
-	elsif ch == '\\' #'
-	  read_escape
-	end
-	if PERCENT_PAREN.values.include?(@quoted)
-	  if PERCENT_PAREN[ch] == @quoted
-	    nest += 1
-	  elsif ch == @quoted
-	    nest -= 1
-	  end
-	end
+        if @quoted == ch and nest == 0
+          break
+        elsif @ltype != "'" && ch == "#" && peek(0) == "{"
+          identify_string_dvar
+        elsif @ltype != "'" && @ltype != "]" && @ltype != ":" and ch == "#"
+          subtype = true
+        elsif ch == '\\' and @ltype == "'" #'
+          case ch = getc
+          when "\\", "\n", "'"
+          else
+            ungetc
+          end
+        elsif ch == '\\' #'
+          read_escape
+        end
+        if PERCENT_PAREN.values.include?(@quoted)
+          if PERCENT_PAREN[ch] == @quoted
+            nest += 1
+          elsif ch == @quoted
+            nest -= 1
+          end
+        end
       end
       if @ltype == "/"
         while /[imxoesun]/ =~ peek(0)
-	  getc
-	end
+          getc
+        end
       end
       if subtype
-	Token(DLtype2Token[ltype])
+        Token(DLtype2Token[ltype])
       else
-	Token(Ltype2Token[ltype])
+        Token(Ltype2Token[ltype])
       end
     ensure
       @ltype = nil
@@ -1125,13 +1125,13 @@ class RubyLex
       @lex_state = EXPR_BEG
 
       loop do
-	@continue = false
-	prompt
-	tk = token
-	if @ltype or @continue or @indent >= 0
-	  next
-	end
-	break if tk.kind_of?(TkRBRACE)
+        @continue = false
+        prompt
+        tk = token
+        if @ltype or @continue or @indent >= 0
+          next
+        end
+        break if tk.kind_of?(TkRBRACE)
       end
     ensure
       @continue = reserve_continue
@@ -1151,9 +1151,9 @@ class RubyLex
 #	read_escape
 #      end
       if ch == "\n"
-	@ltype = nil
-	ungetc
-	break
+        @ltype = nil
+        ungetc
+        break
       end
     end
     return Token(TkCOMMENT)
@@ -1166,42 +1166,42 @@ class RubyLex
     when /[0-7]/
       ungetc ch
       3.times do
-	case ch = getc
-	when /[0-7]/
-	when nil
-	  break
-	else
-	  ungetc
-	  break
-	end
+        case ch = getc
+        when /[0-7]/
+        when nil
+          break
+        else
+          ungetc
+          break
+        end
       end
 
     when "x"
       2.times do
-	case ch = getc
-	when /[0-9a-fA-F]/
-	when nil
-	  break
-	else
-	  ungetc
-	  break
-	end
+        case ch = getc
+        when /[0-9a-fA-F]/
+        when nil
+          break
+        else
+          ungetc
+          break
+        end
       end
 
     when "M"
       if (ch = getc) != '-'
-	ungetc
+        ungetc
       else
-	if (ch = getc) == "\\" #"
-	  read_escape
-	end
+        if (ch = getc) == "\\" #"
+          read_escape
+        end
       end
 
     when "C", "c" #, "^"
       if ch == "C" and (ch = getc) != "-"
-	ungetc
+        ungetc
       elsif (ch = getc) == "\\" #"
-	read_escape
+        read_escape
       end
     else
       # other characters