Change to use double-quoted strings

lib/tty/reader.rb

@@ -1,15 +1,15 @@
 # frozen_string_literal: true
 
-require 'tty-cursor'
-require 'tty-screen'
-require 'wisper'
+require "tty-cursor"
+require "tty-screen"
+require "wisper"
 
-require_relative 'reader/history'
-require_relative 'reader/line'
-require_relative 'reader/key_event'
-require_relative 'reader/console'
-require_relative 'reader/win_console'
-require_relative 'reader/version'
+require_relative "reader/history"
+require_relative "reader/line"
+require_relative "reader/key_event"
+require_relative "reader/console"
+require_relative "reader/win_console"
+require_relative "reader/version"
 
 module TTY
   # A class responsible for reading character input from STDIN
@@ -31,7 +31,7 @@ class Reader
     #
     # @api public
     def self.windows?
-      ::File::ALT_SEPARATOR == '\\'
+      ::File::ALT_SEPARATOR == "\\"
     end
 
     attr_reader :input
@@ -74,7 +74,7 @@ def initialize(**options)
 
       @track_history = options.fetch(:track_history) { true }
       @history_cycle = options.fetch(:history_cycle) { false }
-      exclude_proc   = ->(line) { line.strip == '' }
+      exclude_proc   = ->(line) { line.strip == "" }
       @history_exclude    = options.fetch(:history_exclude) { exclude_proc }
       @history_duplicates = options.fetch(:history_duplicates) { false }
 
@@ -131,7 +131,7 @@ def unsubscribe(listener)
     #
     # @api private
     def select_console(input)
-      if self.class.windows? && !env['TTY_TEST']
+      if self.class.windows? && !env["TTY_TEST"]
         WinConsole.new(input)
       else
         Console.new(input)
@@ -172,7 +172,7 @@ def unbufferred(&block)
     def read_keypress(options = {})
       opts  = { echo: false, raw: true }.merge(options)
       codes = unbufferred { get_codes(opts) }
-      char  = codes ? codes.pack('U*') : nil
+      char  = codes ? codes.pack("U*") : nil
 
       trigger_key_event(char) if char
       char
@@ -224,16 +224,16 @@ def get_codes(options = {}, codes = [])
     # @return [String]
     #
     # @api public
-    def read_line(prompt = '', **options)
+    def read_line(prompt = "", **options)
       opts = { echo: true, raw: true }.merge(options)
-      value = options.fetch(:value, '')
+      value = options.fetch(:value, "")
       line = Line.new(value, prompt: prompt)
       screen_width = TTY::Screen.width
 
       output.print(line)
 
       while (codes = get_codes(opts)) && (code = codes[0])
-        char = codes.pack('U*')
+        char = codes.pack("U*")
 
         if [:ctrl_d, :ctrl_z].include?(console.keys[char])
           trigger_key_event(char, line: line.to_s)
@@ -256,7 +256,7 @@ def read_line(prompt = '', **options)
         elsif console.keys[char] == :up
           line.replace(history_previous) if history_previous?
         elsif console.keys[char] == :down
-          line.replace(history_next? ? history_next : '')
+          line.replace(history_next? ? history_next : "")
         elsif console.keys[char] == :left
           line.left
         elsif console.keys[char] == :right
@@ -277,7 +277,7 @@ def read_line(prompt = '', **options)
           if opts[:raw]
             output.print("\e[1X") unless line.start?
           else
-            output.print(?\s + (line.start? ? '' : ?\b))
+            output.print(?\s + (line.start? ? "" : ?\b))
           end
         end
 
@@ -362,7 +362,7 @@ def read_multiline(*args)
       lines = []
       loop do
         line = read_line(*args)
-        break if !line || line == ''
+        break if !line || line == ""
         next  if line !~ /\S/ && !@stop
         if block_given?
           yield(line) unless line.to_s.empty?
@@ -431,7 +431,7 @@ def inspect
     # @return [nil]
     #
     # @api private
-    def trigger_key_event(char, line: '')
+    def trigger_key_event(char, line: "")
       event = KeyEvent.from(console.keys, char, line)
       trigger(:"key#{event.key.name}", event) if event.trigger?
       trigger(:keypress, event)
@@ -443,7 +443,7 @@ def trigger_key_event(char, line: '')
     def handle_interrupt
       case @interrupt
       when :signal
-        Process.kill('SIGINT', Process.pid)
+        Process.kill("SIGINT", Process.pid)
       when :exit
         exit(130)
       when Proc

lib/tty/reader/console.rb

@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
-require 'io/wait'
+require "io/wait"
 
-require_relative 'keys'
-require_relative 'mode'
+require_relative "keys"
+require_relative "mode"
 
 module TTY
   class Reader

lib/tty/reader/history.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'forwardable'
+require "forwardable"
 
 module TTY
   class Reader
@@ -121,7 +121,7 @@ def [](index)
         end
         line = @history[index]
         if line.nil?
-          raise IndexError, 'invalid index'
+          raise IndexError, "invalid index"
         end
         line.dup
       end

lib/tty/reader/key_event.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require_relative 'keys'
+require_relative "keys"
 
 module TTY
   class Reader
@@ -26,7 +26,7 @@ class KeyEvent < Struct.new(:key, :value, :line)
       # @return [KeyEvent]
       #
       # @api public
-      def self.from(keys, char, line = '')
+      def self.from(keys, char, line = "")
         key = Key.new
         key.name = (name = keys[char]) ? name : :ignore
 

lib/tty/reader/keys.rb

@@ -13,12 +13,12 @@ def ctrl_keys
           ?\C-e => :ctrl_e,
           ?\C-f => :ctrl_f,
           ?\C-g => :ctrl_g,
-          ?\C-h => :ctrl_h, # identical to '\b'
-          ?\C-i => :ctrl_i, # identical to '\t'
-          ?\C-j => :ctrl_j, # identical to '\n'
+          ?\C-h => :ctrl_h, # identical to "\b"
+          ?\C-i => :ctrl_i, # identical to "\t"
+          ?\C-j => :ctrl_j, # identical to "\n"
           ?\C-k => :ctrl_k,
           ?\C-l => :ctrl_l,
-          ?\C-m => :ctrl_m, # identical to '\r'
+          ?\C-m => :ctrl_m, # identical to "\r"
           ?\C-n => :ctrl_n,
           ?\C-o => :ctrl_o,
           ?\C-p => :ctrl_p,
@@ -133,18 +133,18 @@ def win_keys
           "\e" => :escape,
           " "  => :space,
           "\b" => :backspace,
-          [224, 71].pack('U*') => :home,
-          [224, 79].pack('U*') => :end,
-          [224, 82].pack('U*') => :insert,
-          [224, 83].pack('U*') => :delete,
-          [224, 73].pack('U*') => :page_up,
-          [224, 81].pack('U*') => :page_down,
+          [224, 71].pack("U*") => :home,
+          [224, 79].pack("U*") => :end,
+          [224, 82].pack("U*") => :insert,
+          [224, 83].pack("U*") => :delete,
+          [224, 73].pack("U*") => :page_up,
+          [224, 81].pack("U*") => :page_down,
 
-          [224, 72].pack('U*') => :up,
-          [224, 80].pack('U*') => :down,
-          [224, 77].pack('U*') => :right,
-          [224, 75].pack('U*') => :left,
-          [224, 83].pack('U*') => :clear,
+          [224, 72].pack("U*") => :up,
+          [224, 80].pack("U*") => :down,
+          [224, 77].pack("U*") => :right,
+          [224, 75].pack("U*") => :left,
+          [224, 83].pack("U*") => :clear,
 
           "\x00;" => :f1,
           "\x00<" => :f2,

lib/tty/reader/line.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'forwardable'
+require "forwardable"
 
 module TTY
   class Reader
@@ -15,7 +15,7 @@ class Line
       #
       # @api public
       def self.sanitize(text)
-        text.dup.gsub(ANSI_MATCHER, '')
+        text.dup.gsub(ANSI_MATCHER, "")
       end
 
       # The editable text
@@ -37,7 +37,7 @@ def self.sanitize(text)
       # Create a Line instance
       #
       # @api private
-      def initialize(text = '', prompt: '')
+      def initialize(text = "", prompt: "")
         @prompt = prompt.dup
         @text   = text.dup
         @cursor = [0, @text.length].max
@@ -138,9 +138,9 @@ def move_to_end
       #   the characters to insert
       #
       # @example
-      #   text = 'aaa'
-      #   line[5]= 'b'
-      #   => 'aaa  b'
+      #   text = "aaa"
+      #   line[5]= "b"
+      #   => "aaa  b"
       #
       # @api public
       def []=(i, chars)
@@ -153,7 +153,7 @@ def []=(i, chars)
         end
 
         if i <= 0
-          before_text = ''
+          before_text = ""
           after_text = @text.dup
         elsif i > @text.length - 1 # insert outside of line input
           before_text = @text.dup

lib/tty/reader/mode.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'io/console'
+require "io/console"
 
 module TTY
   class Reader

lib/tty/reader/version.rb

@@ -2,6 +2,6 @@
 
 module TTY
   class Reader
-    VERSION = '0.7.0'
+    VERSION = "0.7.0"
   end # Reader
 end # TTY

lib/tty/reader/win_api.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'fiddle'
+require "fiddle"
 
 module TTY
   class Reader

lib/tty/reader/win_console.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require_relative 'keys'
+require_relative "keys"
 
 module TTY
   class Reader
@@ -24,7 +24,7 @@ class WinConsole
       attr_reader :escape_codes
 
       def initialize(input)
-        require_relative 'win_api'
+        require_relative "win_api"
         @input = input
         @keys = Keys.ctrl_keys.merge(Keys.win_keys)
         @escape_codes = [[NUL_HEX.ord], [ESC.ord], EXT_HEX.bytes.to_a]