To: vim_dev@googlegroups.com
Subject: Patch 7.4.272
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------

Patch 7.4.272
Problem:    Using just "$" does not cause an error message.
Solution:   Check for empty environment variable name. (Christian Brabandt)
Files:	    src/eval.c, src/testdir/test_eval.in, src/testdir/test_eval.ok


*** ../vim-7.4.271/src/eval.c	2014-04-29 14:02:42.543919791 +0200
--- src/eval.c	2014-04-29 17:33:40.575697949 +0200
***************
*** 7798,7804 ****
   * Get the value of an environment variable.
   * "arg" is pointing to the '$'.  It is advanced to after the name.
   * If the environment variable was not set, silently assume it is empty.
!  * Always return OK.
   */
      static int
  get_env_tv(arg, rettv, evaluate)
--- 7798,7804 ----
   * Get the value of an environment variable.
   * "arg" is pointing to the '$'.  It is advanced to after the name.
   * If the environment variable was not set, silently assume it is empty.
!  * Return FAIL if the name is invalid.
   */
      static int
  get_env_tv(arg, rettv, evaluate)
***************
*** 7817,7848 ****
      len = get_env_len(arg);
      if (evaluate)
      {
! 	if (len != 0)
  	{
! 	    cc = name[len];
! 	    name[len] = NUL;
! 	    /* first try vim_getenv(), fast for normal environment vars */
! 	    string = vim_getenv(name, &mustfree);
! 	    if (string != NULL && *string != NUL)
! 	    {
! 		if (!mustfree)
! 		    string = vim_strsave(string);
! 	    }
! 	    else
! 	    {
! 		if (mustfree)
! 		    vim_free(string);
  
! 		/* next try expanding things like $VIM and ${HOME} */
! 		string = expand_env_save(name - 1);
! 		if (string != NULL && *string == '$')
! 		{
! 		    vim_free(string);
! 		    string = NULL;
! 		}
  	    }
- 	    name[len] = cc;
  	}
  	rettv->v_type = VAR_STRING;
  	rettv->vval.v_string = string;
      }
--- 7817,7849 ----
      len = get_env_len(arg);
      if (evaluate)
      {
! 	if (len == 0)
!            return FAIL; /* can't be an environment variable */
! 
! 	cc = name[len];
! 	name[len] = NUL;
! 	/* first try vim_getenv(), fast for normal environment vars */
! 	string = vim_getenv(name, &mustfree);
! 	if (string != NULL && *string != NUL)
  	{
! 	    if (!mustfree)
! 		string = vim_strsave(string);
! 	}
! 	else
! 	{
! 	    if (mustfree)
! 		vim_free(string);
  
! 	    /* next try expanding things like $VIM and ${HOME} */
! 	    string = expand_env_save(name - 1);
! 	    if (string != NULL && *string == '$')
! 	    {
! 		vim_free(string);
! 		string = NULL;
  	    }
  	}
+ 	name[len] = cc;
+ 
  	rettv->v_type = VAR_STRING;
  	rettv->vval.v_string = string;
      }
*** ../vim-7.4.271/src/testdir/test_eval.in	2014-04-29 14:02:42.543919791 +0200
--- src/testdir/test_eval.in	2014-04-29 17:35:27.243696080 +0200
***************
*** 183,188 ****
--- 183,195 ----
  :" script-local function used in Funcref must exist.
  :so test_eval_func.vim
  :"
+ :" Using $ instead of '$' must give an error
+ :try
+ : call append($, 'foobar')
+ :catch
+ :$put =v:exception
+ :endtry
+ :"
  :/^start:/+1,$wq! test.out
  :" vim: et ts=4 isk-=\: fmr=???,???
  :call getchar()
*** ../vim-7.4.271/src/testdir/test_eval.ok	2014-04-29 14:02:42.543919791 +0200
--- src/testdir/test_eval.ok	2014-04-29 17:36:41.451694779 +0200
***************
*** 345,347 ****
--- 345,348 ----
  func s:Testje exists: 1
  Bar exists: 1
  func Bar exists: 1
+ Vim(call):E116: Invalid arguments for function append
*** ../vim-7.4.271/src/version.c	2014-04-29 15:55:39.443801021 +0200
--- src/version.c	2014-04-29 17:31:54.203699814 +0200
***************
*** 736,737 ****
--- 736,739 ----
  {   /* Add new patch number below this line */
+ /**/
+     272,
  /**/

-- 
From "know your smileys":
 C=}>;*{)) Drunk, devilish chef with a toupee in an updraft,
	   a mustache, and a double chin

 /// 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        ///
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