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To: vim-dev@vim.org
Subject: Patch 7.2.266
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
------------

Patch 7.2.266
Problem:    When an expression abbreviation is triggered, the typed character
	    is unknown.
Solution:   Make the typed character available in v:char.
Files:	    runtime/doc/map.txt, src/eval.c, src/getchar.c, src/ops.c,
	    src/proto/eval.pro


*** ../vim-7.2.265/runtime/doc/map.txt	2008-08-09 19:36:49.000000000 +0200
--- runtime/doc/map.txt	2009-09-23 19:39:19.000000000 +0200
***************
*** 224,229 ****
--- 224,233 ----
  The result of the InsertDot() function will be inserted.  It could check the
  text before the cursor and start omni completion when some condition is met.
  
+ For abbreviations |v:char| is set to the character that was typed to trigger
+ the abbreviation.  You can use this to decide how to expand the {lhs}.  You
+ can't change v:char and you should not insert it.
+ 
  Be very careful about side effects!  The expression is evaluated while
  obtaining characters, you may very well make the command dysfunctional.
  For this reason the following is blocked:
*** ../vim-7.2.265/src/eval.c	2009-06-03 14:25:47.000000000 +0200
--- src/eval.c	2009-09-23 19:36:32.000000000 +0200
***************
*** 18101,18106 ****
--- 18101,18131 ----
  }
  
  /*
+  * Set v:char to character "c".
+  */
+     void
+ set_vim_var_char(c)
+     int c;
+ {
+ #ifdef FEAT_MBYTE
+     char_u	buf[MB_MAXBYTES];
+ #else
+     char_u	buf[2];
+ #endif
+ 
+ #ifdef FEAT_MBYTE
+     if (has_mbyte)
+ 	buf[(*mb_char2bytes)(c, buf)] = NUL;
+     else
+ #endif
+     {
+ 	buf[0] = c;
+ 	buf[1] = NUL;
+     }
+     set_vim_var_string(VV_CHAR, buf, -1);
+ }
+ 
+ /*
   * Set v:count to "count" and v:count1 to "count1".
   * When "set_prevcount" is TRUE first set v:prevcount from v:count.
   */
*** ../vim-7.2.265/src/getchar.c	2009-07-14 13:44:43.000000000 +0200
--- src/getchar.c	2009-09-23 19:35:54.000000000 +0200
***************
*** 129,135 ****
  static void	validate_maphash __ARGS((void));
  static void	showmap __ARGS((mapblock_T *mp, int local));
  #ifdef FEAT_EVAL
! static char_u	*eval_map_expr __ARGS((char_u *str));
  #endif
  
  /*
--- 129,135 ----
  static void	validate_maphash __ARGS((void));
  static void	showmap __ARGS((mapblock_T *mp, int local));
  #ifdef FEAT_EVAL
! static char_u	*eval_map_expr __ARGS((char_u *str, int c));
  #endif
  
  /*
***************
*** 2446,2452 ****
  			    if (tabuf.typebuf_valid)
  			    {
  				vgetc_busy = 0;
! 				s = eval_map_expr(mp->m_str);
  				vgetc_busy = save_vgetc_busy;
  			    }
  			    else
--- 2446,2452 ----
  			    if (tabuf.typebuf_valid)
  			    {
  				vgetc_busy = 0;
! 				s = eval_map_expr(mp->m_str, NUL);
  				vgetc_busy = save_vgetc_busy;
  			    }
  			    else
***************
*** 4367,4375 ****
  	     * abbreviation, but is not inserted into the input stream.
  	     */
  	    j = 0;
- 					/* special key code, split up */
  	    if (c != Ctrl_RSB)
  	    {
  		if (IS_SPECIAL(c) || c == K_SPECIAL)
  		{
  		    tb[j++] = K_SPECIAL;
--- 4367,4375 ----
  	     * abbreviation, but is not inserted into the input stream.
  	     */
  	    j = 0;
  	    if (c != Ctrl_RSB)
  	    {
+ 					/* special key code, split up */
  		if (IS_SPECIAL(c) || c == K_SPECIAL)
  		{
  		    tb[j++] = K_SPECIAL;
***************
*** 4398,4404 ****
  	    }
  #ifdef FEAT_EVAL
  	    if (mp->m_expr)
! 		s = eval_map_expr(mp->m_str);
  	    else
  #endif
  		s = mp->m_str;
--- 4398,4404 ----
  	    }
  #ifdef FEAT_EVAL
  	    if (mp->m_expr)
! 		s = eval_map_expr(mp->m_str, c);
  	    else
  #endif
  		s = mp->m_str;
***************
*** 4434,4441 ****
   * special characters.
   */
      static char_u *
! eval_map_expr(str)
      char_u	*str;
  {
      char_u	*res;
      char_u	*p;
--- 4434,4442 ----
   * special characters.
   */
      static char_u *
! eval_map_expr(str, c)
      char_u	*str;
+     int		c;	    /* NUL or typed character for abbreviation */
  {
      char_u	*res;
      char_u	*p;
***************
*** 4452,4457 ****
--- 4453,4459 ----
  #ifdef FEAT_EX_EXTRA
      ++ex_normal_lock;
  #endif
+     set_vim_var_char(c);  /* set v:char to the typed character */
      save_cursor = curwin->w_cursor;
      p = eval_to_string(str, NULL, FALSE);
      --textlock;
*** ../vim-7.2.265/src/ops.c	2009-07-01 18:04:30.000000000 +0200
--- src/ops.c	2009-09-23 19:11:40.000000000 +0200
***************
*** 4473,4483 ****
      int		use_sandbox = was_set_insecurely((char_u *)"formatexpr",
  								   OPT_LOCAL);
      int		r;
- #ifdef FEAT_MBYTE
-     char_u	buf[MB_MAXBYTES];
- #else
-     char_u	buf[2];
- #endif
  
      /*
       * Set v:lnum to the first line number and v:count to the number of lines.
--- 4473,4478 ----
***************
*** 4485,4501 ****
       */
      set_vim_var_nr(VV_LNUM, lnum);
      set_vim_var_nr(VV_COUNT, count);
! 
! #ifdef FEAT_MBYTE
!     if (has_mbyte)
! 	buf[(*mb_char2bytes)(c, buf)] = NUL;
!     else
! #endif
!     {
! 	buf[0] = c;
! 	buf[1] = NUL;
!     }
!     set_vim_var_string(VV_CHAR, buf, -1);
  
      /*
       * Evaluate the function.
--- 4480,4486 ----
       */
      set_vim_var_nr(VV_LNUM, lnum);
      set_vim_var_nr(VV_COUNT, count);
!     set_vim_var_char(c);
  
      /*
       * Evaluate the function.
*** ../vim-7.2.265/src/proto/eval.pro	2008-11-20 16:11:03.000000000 +0100
--- src/proto/eval.pro	2009-09-23 19:36:30.000000000 +0200
***************
*** 61,66 ****
--- 61,67 ----
  long get_vim_var_nr __ARGS((int idx));
  char_u *get_vim_var_str __ARGS((int idx));
  list_T *get_vim_var_list __ARGS((int idx));
+ void set_vim_var_char __ARGS((int c));
  void set_vcount __ARGS((long count, long count1, int set_prevcount));
  void set_vim_var_string __ARGS((int idx, char_u *val, int len));
  void set_vim_var_list __ARGS((int idx, list_T *val));
*** ../vim-7.2.265/src/version.c	2009-09-30 13:23:57.000000000 +0200
--- src/version.c	2009-09-30 15:11:29.000000000 +0200
***************
*** 678,679 ****
--- 678,681 ----
  {   /* Add new patch number below this line */
+ /**/
+     266,
  /**/

-- 
Life would be so much easier if we could just look at the source code.

 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\        download, build and distribute -- http://www.A-A-P.org        ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///