Patch 8.1.0269
Problem:    Ruby Kernel.#p method always returns nil.
Solution:   Copy p method implementation from Ruby code. (Masataka Pocke
            Kuwabara, closes #3315)
Files:      src/if_ruby.c, src/testdir/test_ruby.vim


*** ../vim-8.1.0268/src/if_ruby.c       2018-08-04 17:24:39.062825210 +0200
--- src/if_ruby.c       2018-08-11 14:23:48.613860602 +0200
***************
*** 299,304 ****
--- 299,309 ----
  #  define rb_string_value_ptr         dll_rb_string_value_ptr
  #  define rb_float_new                        dll_rb_float_new
  #  define rb_ary_new                  dll_rb_ary_new
+ #  ifdef rb_ary_new4
+ #    define RB_ARY_NEW4_MACRO 1
+ #    undef rb_ary_new4
+ #  endif
+ #  define rb_ary_new4                 dll_rb_ary_new4
  #  define rb_ary_push                 dll_rb_ary_push
  #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
  #   ifdef __ia64
***************
*** 441,446 ****
--- 446,452 ----
  static char * (*dll_rb_string_value_ptr) (volatile VALUE*);
  static VALUE (*dll_rb_float_new) (double);
  static VALUE (*dll_rb_ary_new) (void);
+ static VALUE (*dll_rb_ary_new4) (long n, const VALUE *elts);
  static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
  #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
  #   ifdef __ia64
***************
*** 647,652 ****
--- 653,663 ----
      {"rb_float_new_in_heap", (RUBY_PROC*)&dll_rb_float_new},
  #  endif
      {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
+ #  ifdef RB_ARY_NEW4_MACRO
+     {"rb_ary_new_from_values", (RUBY_PROC*)&dll_rb_ary_new4},
+ #  else
+     {"rb_ary_new4", (RUBY_PROC*)&dll_rb_ary_new4},
+ #  endif
      {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
  # endif
  # ifdef RUBY19_OR_LATER
***************
*** 1577,1582 ****
--- 1588,1594 ----
  {
      int i;
      VALUE str = rb_str_new("", 0);
+     VALUE ret = Qnil;
  
      for (i = 0; i < argc; i++)
      {
***************
*** 1584,1590 ****
        rb_str_concat(str, rb_inspect(argv[i]));
      }
      MSG(RSTRING_PTR(str));
!     return Qnil;
  }
  
  static void ruby_io_init(void)
--- 1596,1607 ----
        rb_str_concat(str, rb_inspect(argv[i]));
      }
      MSG(RSTRING_PTR(str));
! 
!     if (argc == 1)
!       ret = argv[0];
!     else if (argc > 1)
!       ret = rb_ary_new4(argc, argv);
!     return ret;
  }
  
  static void ruby_io_init(void)
*** ../vim-8.1.0268/src/testdir/test_ruby.vim   2018-07-28 17:29:15.757096343 
+0200
--- src/testdir/test_ruby.vim   2018-08-11 14:17:07.396211894 +0200
***************
*** 363,366 ****
--- 363,379 ----
    ruby p 'Just a test'
    let messages = split(execute('message'), "\n")
    call assert_equal('"Just a test"', messages[-1])
+ 
+   " Check return values of p method
+ 
+   call assert_equal('123', RubyEval('p(123)'))
+   call assert_equal('[1, 2, 3]', RubyEval('p(1, 2, 3)'))
+ 
+   " Avoid the "message maintainer" line.
+   let $LANG = ''
+   messages clear
+   call assert_equal('true', RubyEval('p() == nil'))
+ 
+   let messages = split(execute('message'), "\n")
+   call assert_equal(0, len(messages))
  endfunc
*** ../vim-8.1.0268/src/version.c       2018-08-11 13:57:16.215969777 +0200
--- src/version.c       2018-08-11 14:22:56.922175770 +0200
***************
*** 796,797 ****
--- 796,799 ----
  {   /* Add new patch number below this line */
+ /**/
+     269,
  /**/

-- 
SIGFUN -- signature too funny (core dumped)

 /// Bram Moolenaar -- b...@moolenaar.net -- http://www.Moolenaar.net   \\\
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\\\  an exciting new programming language -- http://www.Zimbu.org        ///
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