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To: vim_dev@googlegroups.com
Subject: Patch 7.3.392
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
------------

Patch 7.3.392
Problem:    When setting 'undofile' while the file is already loaded but
	    unchanged, try reading the undo file. (Andy Wokula)
Solution:   Compute a checksum of the text when 'undofile' is set. (Christian
	    Brabandt)
Files:	    src/option.c, src/testdir/test72.in, src/testdir/test72.ok


*** ../vim-7.3.391/src/option.c	2011-11-30 11:31:25.000000000 +0100
--- src/option.c	2012-01-04 19:34:11.000000000 +0100
***************
*** 7516,7521 ****
--- 7516,7545 ----
  	compatible_set();
      }
  
+ #ifdef FEAT_PERSISTENT_UNDO
+     /* 'undofile' */
+     else if ((int *)varp == &curbuf->b_p_udf || (int *)varp == &p_udf)
+     {
+ 	char_u	hash[UNDO_HASH_SIZE];
+ 	buf_T	*save_curbuf = curbuf;
+ 
+ 	for (curbuf = firstbuf; curbuf != NULL; curbuf = curbuf->b_next)
+ 	{
+ 	    /* When 'undofile' is set globally: for every buffer, otherwise
+ 	     * only for the current buffer: Try to read in the undofile, if
+ 	     * one exists and the buffer wasn't changed. */
+ 	    if ((curbuf == save_curbuf
+ 				|| (opt_flags & OPT_GLOBAL) || opt_flags == 0)
+ 		    && !curbufIsChanged())
+ 	    {
+ 		u_compute_hash(hash);
+ 		u_read_undo(NULL, hash, curbuf->b_fname);
+ 	    }
+ 	}
+ 	curbuf = save_curbuf;
+     }
+ #endif
+ 
      /* 'list', 'number' */
      else if ((int *)varp == &curwin->w_p_list
  	  || (int *)varp == &curwin->w_p_nu
*** ../vim-7.3.391/src/testdir/test72.in	2010-08-15 21:57:29.000000000 +0200
--- src/testdir/test72.in	2012-01-04 19:04:17.000000000 +0100
***************
*** 51,56 ****
--- 51,62 ----
  :e Xtestfile
  uuu:w >>test.out
  :"
+ :" Test that reading the undofiles when setting undofile works
+ :set noundofile ul=0
+ i
+ u:e! Xtestfile
+ :set undofile ul=100
+ uuuuuu:w >>test.out
  :" And now with encryption, cryptmethod=zip
  :e! Xtestfile
  :set undofile cm=zip
*** ../vim-7.3.391/src/testdir/test72.ok	2010-08-15 21:57:29.000000000 +0200
--- src/testdir/test72.ok	2012-01-04 19:04:17.000000000 +0100
***************
*** 7,12 ****
--- 7,22 ----
  eight
  nine
  ten
+ one
+ two
+ three
+ four
+ five
+ six
+ seven
+ eight
+ nine
+ ten
  monday
  wednesday
  thursday
*** ../vim-7.3.391/src/version.c	2012-01-04 14:35:31.000000000 +0100
--- src/version.c	2012-01-04 19:33:41.000000000 +0100
***************
*** 716,717 ****
--- 716,719 ----
  {   /* Add new patch number below this line */
+ /**/
+     392,
  /**/

-- 
BROTHER MAYNARD: Armaments Chapter Two Verses Nine to Twenty One.
ANOTHER MONK:    And St.  Attila raised his hand grenade up on high saying "O
                 Lord bless this thy hand grenade that with it thou mayest
                 blow thine enemies to tiny bits, in thy mercy. "and the Lord
                 did grin and people did feast upon the lambs and sloths and
                 carp and anchovies and orang-utans and breakfast cereals and
                 fruit bats and...
BROTHER MAYNARD: Skip a bit brother ...
                 "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\  an exciting new programming language -- http://www.Zimbu.org        ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///