* ext/readline/readline.c (readline_s_set_point, Init_readline):

add Readline.point=(pos). Patched by naruse.  [ruby-dev:47535]
  [Feature #8675]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42405 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Tue Aug  6 21:48:31 2013  Kouji Takao  <kouji.takao@gmail.com>
+
+	* ext/readline/readline.c (readline_s_set_point, Init_readline):
+	  add Readline.point=(pos). Patched by naruse.  [ruby-dev:47535]
+	  [Feature #8675]
+
 Tue Aug  6 21:14:11 2013  Kouji Takao  <kouji.takao@gmail.com>
 
 	* ext/readline/readline.c (Init_readline, readline_s_set_output)

ext/readline/readline.c

@@ -896,8 +896,25 @@ readline_s_get_point(VALUE self)
 {
     return INT2NUM(rl_point);
 }
+
+/*
+ * call-seq:
+ *   Readline.point = int
+ *
+ * Set the index of the current cursor position in
+ * +Readline.line_buffer+.
+ *
+ * See +Readline.point+.
+ */
+static VALUE
+readline_s_set_point(VALUE self, VALUE pos)
+{
+    rl_point = NUM2INT(pos);
+    return pos;
+}
 #else
 #define readline_s_get_point rb_f_notimplement
+#define readline_s_set_point rb_f_notimplement
 #endif
 
 static char **
@@ -1849,6 +1866,8 @@ Init_readline()
 			       readline_s_get_line_buffer, 0);
     rb_define_singleton_method(mReadline, "point",
 			       readline_s_get_point, 0);
+    rb_define_singleton_method(mReadline, "point=",
+			       readline_s_set_point, 1);
     rb_define_singleton_method(mReadline, "set_screen_size",
 			       readline_s_set_screen_size, 2);
     rb_define_singleton_method(mReadline, "get_screen_size",

test/readline/test_readline.rb

@@ -17,6 +17,11 @@ class TestReadline < Test::Unit::TestCase
   def teardown
     ENV[INPUTRC] = @inputrc
     Readline.instance_variable_set("@completion_proc", nil)
+    begin
+      Readline.delete_text
+      Readline.point = 0
+    rescue NotImplementedError
+    end
   end
 
   if !/EditLine/n.match(Readline::VERSION)
@@ -311,9 +316,22 @@ class TestReadline < Test::Unit::TestCase
     end
   end
 
+  def test_point
+    assert_equal(0, Readline.point)
+    Readline.insert_text('12345')
+    assert_equal(5, Readline.point)
+
+    assert_equal(4, Readline.point=(4))
+    
+    Readline.insert_text('abc')
+    assert_equal(7, Readline.point)
+
+    assert_equal('1234abc5', Readline.line_buffer)
+  rescue NotImplementedError
+  end if !/EditLine/n.match(Readline::VERSION)
+
   def test_insert_text
     str = "test_insert_text"
-    with_pipe {|r, w| w.write("\C-a\n")} # reset rl_point
     assert_equal(0, Readline.point)
     assert_equal(Readline, Readline.insert_text(str))
     assert_equal(str, Readline.line_buffer)