To: vim_dev@googlegroups.com
Subject: Patch 7.4.574
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------
 
Patch 7.4.574
Problem:    No error for eval('$').
Solution:   Check for empty name. (Yasuhiro Matsumoto)
Files:	    src/eval.c
 
 
*** ../vim-7.4.573/src/eval.c	2014-12-13 21:00:52.059036480 +0100
--- src/eval.c	2015-01-14 17:11:38.633570761 +0100
***************
*** 7867,7873 ****
      if (evaluate)
      {
  	if (len == 0)
!            return FAIL; /* can't be an environment variable */
  
  	cc = name[len];
  	name[len] = NUL;
--- 7867,7873 ----
      if (evaluate)
      {
  	if (len == 0)
! 	    return FAIL; /* invalid empty name */
  
  	cc = name[len];
  	name[len] = NUL;
***************
*** 10117,10130 ****
      typval_T	*argvars;
      typval_T	*rettv;
  {
!     char_u	*s;
  
      s = get_tv_string_chk(&argvars[0]);
      if (s != NULL)
  	s = skipwhite(s);
  
      if (s == NULL || eval1(&s, rettv, TRUE) == FAIL)
      {
  	rettv->v_type = VAR_NUMBER;
  	rettv->vval.v_number = 0;
      }
--- 10117,10134 ----
      typval_T	*argvars;
      typval_T	*rettv;
  {
!     char_u	*s, *p;
  
      s = get_tv_string_chk(&argvars[0]);
      if (s != NULL)
  	s = skipwhite(s);
  
+     p = s;
      if (s == NULL || eval1(&s, rettv, TRUE) == FAIL)
      {
+ 	if (p != NULL && !aborting())
+ 	    EMSG2(_(e_invexpr2), p);
+ 	need_clr_eos = FALSE;
  	rettv->v_type = VAR_NUMBER;
  	rettv->vval.v_number = 0;
      }
*** ../vim-7.4.573/src/version.c	2015-01-14 16:08:29.210474234 +0100
--- src/version.c	2015-01-14 17:05:25.357601603 +0100
***************
*** 743,744 ****
--- 743,746 ----
  {   /* Add new patch number below this line */
+ /**/
+     574,
  /**/
 
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 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
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