Input with eof and no newline bugfix (#671)

Author: tompng

lib/reline/ansi.rb

@@ -284,7 +284,7 @@ def self.cursor_pos
         buf = @@output.pread(@@output.pos, 0)
         row = buf.count("\n")
         column = buf.rindex("\n") ? (buf.size - buf.rindex("\n")) - 1 : 0
-      rescue Errno::ESPIPE
+      rescue Errno::ESPIPE, IOError
         # Just returns column 1 for ambiguous width because this I/O is not
         # tty and can't seek.
         row = 0

lib/reline/line_editor.rb

@@ -1118,6 +1118,7 @@ def input_key(key)
       end
     end
     if key.char.nil?
+      process_insert(force: true)
       if @first_char
         @eof = true
       end

test/reline/yamatanooroti/test_rendering.rb

@@ -945,18 +945,30 @@ def test_force_enter
       EOC
     end
 
-    def test_with_newline
+    def test_eof_with_newline
       omit if Reline.core.io_gate.win?
       cmd = %Q{ruby -e 'print(%Q{abc def \\e\\r})' | ruby -I#{@pwd}/lib -rreline -e 'p Reline.readline(%{> })'}
       start_terminal(40, 50, ['bash', '-c', cmd])
       sleep 1
-      close
+      close rescue nil
       assert_screen(<<~'EOC')
         > abc def
         "abc def "
       EOC
     end
 
+    def test_eof_without_newline
+      omit if Reline.core.io_gate.win?
+      cmd = %Q{ruby -e 'print(%{hello})' | ruby -I#{@pwd}/lib -rreline -e 'p Reline.readline(%{> })'}
+      start_terminal(40, 50, ['bash', '-c', cmd])
+      sleep 1
+      close rescue nil
+      assert_screen(<<~'EOC')
+        > hello
+        "hello"
+      EOC
+    end
+
     def test_em_set_mark_and_em_exchange_mark
       start_terminal(10, 50, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl}, startup_message: 'Multiline REPL.')
       write("aaa bbb ccc ddd\M-b\M-b\M-\x20\M-b\C-x\C-xX\C-x\C-xY")