From 57b4df07bc1e863c48a3b0f4c3185de431454695 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Tue, 28 May 2019 08:38:55 +0900
Subject: Use Reline.completer_quote_characters to complete

---
 lib/reline.rb             | 16 ----------------
 lib/reline/line_editor.rb | 45 ++++++++++++++++++++++++++++++++++++---------
 2 files changed, 36 insertions(+), 25 deletions(-)

(limited to 'lib')

diff --git a/lib/reline.rb b/lib/reline.rb
index 0b6eddf498..656fab2fea 100644
--- a/lib/reline.rb
+++ b/lib/reline.rb
@@ -239,21 +239,6 @@ module Reline
     Reline::IOGate.get_screen_size
   end
 
-  def retrieve_completion_block(line, byte_pointer)
-    break_regexp = /[#{Regexp.escape(@@basic_word_break_characters)}]/
-    before_pointer = line.byteslice(0, byte_pointer)
-    break_point = before_pointer.rindex(break_regexp)
-    if break_point
-      preposing = before_pointer[0..(break_point)]
-      block = before_pointer[(break_point + 1)..-1]
-    else
-      preposing = ''
-      block = before_pointer
-    end
-    postposing = line.byteslice(byte_pointer, line.bytesize)
-    [preposing, block, postposing]
-  end
-
   def eof?
     @@line_editor.eof?
   end
@@ -313,7 +298,6 @@ module Reline
     @@line_editor.output_modifier_proc = @@output_modifier_proc
     @@line_editor.dig_perfect_match_proc = @@dig_perfect_match_proc
     @@line_editor.pre_input_hook = @@pre_input_hook
-    @@line_editor.retrieve_completion_block = method(:retrieve_completion_block)
     @@line_editor.rerender
 
     if IS_WINDOWS
diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index 44cb0577a2..baec338e74 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -13,7 +13,6 @@ class Reline::LineEditor
   attr_accessor :output_modifier_proc
   attr_accessor :pre_input_hook
   attr_accessor :dig_perfect_match_proc
-  attr_writer :retrieve_completion_block
   attr_writer :output
 
   ARGUMENTABLE = %i{
@@ -482,7 +481,7 @@ class Reline::LineEditor
   end
 
   private def complete_internal_proc(list, is_menu)
-    preposing, target, postposing = @retrieve_completion_block.(@line, @byte_pointer)
+    preposing, target, postposing = retrieve_completion_block
     list = list.select { |i|
       if i and i.encoding != Encoding::US_ASCII and i.encoding != @encoding
         raise Encoding::CompatibilityError
@@ -547,7 +546,7 @@ class Reline::LineEditor
     case @completion_state
     when CompletionState::NORMAL, CompletionState::COMPLETION, CompletionState::MENU
       @completion_state = CompletionState::JOURNEY
-      result = @retrieve_completion_block.(@line, @byte_pointer)
+      result = retrieve_completion_block
       return if result.nil?
       preposing, target, postposing = result
       @completion_journey_data = CompletionJourneyData.new(
@@ -697,14 +696,16 @@ class Reline::LineEditor
     @first_char = false
     completion_occurs = false
     if @config.editing_mode_is?(:emacs, :vi_insert) and key.char == "\C-i".ord
-      slice = retrieve_completion_slice
+      result = retrieve_completion_block
+      slice = result[1]
       result = @completion_proc.(slice) if @completion_proc and slice
       if result.is_a?(Array)
         completion_occurs = true
         complete(result)
       end
     elsif @config.editing_mode_is?(:vi_insert) and ["\C-p".ord, "\C-n".ord].include?(key.char)
-      slice = retrieve_completion_slice
+      result = retrieve_completion_block
+      slice = result[1]
       result = @completion_proc.(slice) if @completion_proc and slice
       if result.is_a?(Array)
         completion_occurs = true
@@ -720,16 +721,42 @@ class Reline::LineEditor
     end
   end
 
-  def retrieve_completion_slice
+  def retrieve_completion_block
     word_break_regexp = /\A[#{Regexp.escape(Reline.completer_word_break_characters)}]/
+    quote_characters_regexp = /\A[#{Regexp.escape(Reline.completer_quote_characters)}]/
     before = @line.byteslice(0, @byte_pointer)
     rest = nil
-    (0..@byte_pointer).each do |i|
-      if @line.byteslice(i, @byte_pointer) =~ word_break_regexp
+    break_pointer = nil
+    quote = nil
+    i = 0
+    while i < @byte_pointer do
+      slice = @line.byteslice(i, @byte_pointer - i)
+      if quote and slice =~ /\A(?<!\\)#{Regexp.escape(quote)}/ # closing "
+        quote = nil
+        i += 1
+      elsif quote and slice =~ /\A\\#{Regexp.escape(quote)}/ # escaped \"
+        # skip
+        i += 2
+      elsif slice =~ quote_characters_regexp # find new "
+        quote = $&
+        i += 1
+      elsif not quote and slice =~ word_break_regexp
         rest = $'
+        i += 1
+        break_pointer = i
+      else
+        i += 1
       end
     end
-    rest ? rest : before
+    if rest
+      preposing = @line.byteslice(0, break_pointer)
+      target = rest
+    else
+      preposing = ''
+      target = before
+    end
+    postposing = @line.byteslice(@byte_pointer, @line.bytesize - @byte_pointer)
+    [preposing, target, postposing]
   end
 
   def confirm_multiline_termination
-- 
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