updated for version 7.4.243

Problem:    Cannot use setreg() to add text that includes a NUL.
Solution:   Make setreg() accept a list.

runtime/doc/eval.txt

@@ -5368,6 +5368,8 @@ setqflist({list} [, {action}])				*setqflist()*
 							*setreg()*
 setreg({regname}, {value} [,{options}])
 		Set the register {regname} to {value}.
+		{value} may be any value returned by |getreg()|, including 
+		a |List|.
 		If {options} contains "a" or {regname} is upper case,
 		then the value is appended.
 		{options} can also contain a register type specification:
@@ -5380,10 +5382,15 @@ setreg({regname}, {value} [,{options}])
 		in the longest line (counting a <Tab> as 1 character).
 
 		If {options} contains no register settings, then the default
-		is to use character mode unless {value} ends in a <NL>.
+		is to use character mode unless {value} ends in a <NL> for 
-		Setting the '=' register is not possible, but you can use >
+		string {value} and linewise mode for list {value}. Blockwise 
-			:let @= = var_expr
+		mode is never selected automatically.
-<		Returns zero for success, non-zero for failure.
+		Returns zero for success, non-zero for failure.
+
+							*E883*
+		Note: you may not use |List| containing more then one item to 
+		      set search and expression registers. Lists containing no 
+		      items act like empty strings.
 
 		Examples: >
 			:call setreg(v:register, @*)
@@ -5391,8 +5398,11 @@ setreg({regname}, {value} [,{options}])
 			:call setreg('a', "1\n2\n3", 'b5')
 
 <		This example shows using the functions to save and restore a
-		register. >
+		register (note: you may not reliably restore register value 
-			:let var_a = getreg('a', 1)
+		without using the third argument to |getreg()| as without it 
+		newlines are represented as newlines AND Nul bytes are 
+		represented as newlines as well, see |NL-used-for-Nul|). >
+			:let var_a = getreg('a', 1, 1)
 			:let var_amode = getregtype('a')
 			    ....
 			:call setreg('a', var_a, var_amode)

src/eval.c

@@ -16790,8 +16790,6 @@ f_setreg(argvars, rettv)
     regname = *strregname;
     if (regname == 0 || regname == '@')
 	regname = '"';
-    else if (regname == '=')
-	return;
 
     if (argvars[2].v_type != VAR_UNKNOWN)
     {
@@ -16822,10 +16820,44 @@ f_setreg(argvars, rettv)
 	    }
     }
 
+    if (argvars[1].v_type == VAR_LIST)
+    {
+	char_u		**lstval;
+	char_u		**curval;
+	int		len = argvars[1].vval.v_list->lv_len;
+	listitem_T	*li;
+
+	lstval = (char_u **)alloc(sizeof(char_u *) * (len + 1));
+	if (lstval == NULL)
+	    return;
+	curval = lstval;
+
+	for (li = argvars[1].vval.v_list->lv_first; li != NULL;
+							     li = li->li_next)
+	{
+	    /* TODO: this may use a static buffer several times. */
+	    strval = get_tv_string_chk(&li->li_tv);
+	    if (strval == NULL)
+	    {
+		vim_free(lstval);
+		return;
+	    }
+	    *curval++ = strval;
+	}
+	*curval++ = NULL;
+
+	write_reg_contents_lst(regname, lstval, -1,
+						append, yank_type, block_len);
+	vim_free(lstval);
+    }
+    else
+    {
 	strval = get_tv_string_chk(&argvars[1]);
-    if (strval != NULL)
+	if (strval == NULL)
+	    return;
 	write_reg_contents_ex(regname, strval, -1,
 						append, yank_type, block_len);
+    }
     rettv->vval.v_number = 0;
 }
 

src/ops.c

@@ -113,7 +113,7 @@ static char_u	*skip_comment __ARGS((char_u *line, int process, int include_space
 #endif
 static void	block_prep __ARGS((oparg_T *oap, struct block_def *, linenr_T, int));
 #if defined(FEAT_CLIPBOARD) || defined(FEAT_EVAL)
-static void	str_to_reg __ARGS((struct yankreg *y_ptr, int type, char_u *str, long len, long blocklen));
+static void	str_to_reg __ARGS((struct yankreg *y_ptr, int type, char_u *str, long len, long blocklen, int str_list));
 #endif
 static int	ends_in_white __ARGS((linenr_T lnum));
 #ifdef FEAT_COMMENTS
@@ -6005,7 +6005,7 @@ clip_yank_selection(type, str, len, cbd)
 
     clip_free_selection(cbd);
 
-    str_to_reg(y_ptr, type, str, len, 0L);
+    str_to_reg(y_ptr, type, str, len, 0L, FALSE);
 }
 
 /*
@@ -6113,7 +6113,7 @@ dnd_yank_drag_data(str, len)
     curr = y_current;
     y_current = &y_regs[TILDE_REGISTER];
     free_yank_all();
-    str_to_reg(y_current, MCHAR, str, len, 0L);
+    str_to_reg(y_current, MCHAR, str, len, 0L, FALSE);
     y_current = curr;
 }
 #endif
@@ -6308,6 +6308,47 @@ get_reg_contents(regname, flags)
     return retval;
 }
 
+    static int
+init_write_reg(name, old_y_previous, old_y_current, must_append, yank_type)
+    int		    name;
+    struct yankreg  **old_y_previous;
+    struct yankreg  **old_y_current;
+    int		    must_append;
+    int		    *yank_type UNUSED;
+{
+    if (!valid_yank_reg(name, TRUE))	    /* check for valid reg name */
+    {
+	emsg_invreg(name);
+	return FAIL;
+    }
+
+    /* Don't want to change the current (unnamed) register */
+    *old_y_previous = y_previous;
+    *old_y_current = y_current;
+
+    get_yank_register(name, TRUE);
+    if (!y_append && !must_append)
+	free_yank_all();
+    return OK;
+}
+
+    static void
+finish_write_reg(name, old_y_previous, old_y_current)
+    int		    name;
+    struct yankreg  *old_y_previous;
+    struct yankreg  *old_y_current;
+{
+# ifdef FEAT_CLIPBOARD
+    /* Send text of clipboard register to the clipboard. */
+    may_set_selection();
+# endif
+
+    /* ':let @" = "val"' should change the meaning of the "" register */
+    if (name != '"')
+	y_previous = old_y_previous;
+    y_current = old_y_current;
+}
+
 /*
  * Store string "str" in register "name".
  * "maxlen" is the maximum number of bytes to use, -1 for all bytes.
@@ -6327,6 +6368,51 @@ write_reg_contents(name, str, maxlen, must_append)
     write_reg_contents_ex(name, str, maxlen, must_append, MAUTO, 0L);
 }
 
+    void
+write_reg_contents_lst(name, strings, maxlen, must_append, yank_type, block_len)
+    int		name;
+    char_u	**strings;
+    int		maxlen UNUSED;
+    int		must_append;
+    int		yank_type;
+    long	block_len;
+{
+    struct yankreg  *old_y_previous, *old_y_current;
+
+    if (name == '/'
+#ifdef FEAT_EVAL
+	    || name == '='
+#endif
+	    )
+    {
+	char_u	*s;
+
+	if (strings[0] == NULL)
+	    s = (char_u *)"";
+	else if (strings[1] != NULL)
+	{
+	    EMSG(_("E883: search pattern and expression register may not "
+			"contain two or more lines"));
+	    return;
+	}
+	else
+	    s = strings[0];
+	write_reg_contents_ex(name, s, -1, must_append, yank_type, block_len);
+	return;
+    }
+
+    if (name == '_')	    /* black hole: nothing to do */
+	return;
+
+    if (init_write_reg(name, &old_y_previous, &old_y_current, must_append,
+		&yank_type) == FAIL)
+	return;
+
+    str_to_reg(y_current, yank_type, (char_u *) strings, -1, block_len, TRUE);
+
+    finish_write_reg(name, old_y_previous, old_y_current);
+}
+
     void
 write_reg_contents_ex(name, str, maxlen, must_append, yank_type, block_len)
     int		name;
@@ -6364,40 +6450,22 @@ write_reg_contents_ex(name, str, maxlen, must_append, yank_type, block_len)
 	    s = concat_str(get_expr_line_src(), p);
 	    vim_free(p);
 	    p = s;
-
 	}
 	set_expr_line(p);
 	return;
     }
 #endif
 
-    if (!valid_yank_reg(name, TRUE))	    /* check for valid reg name */
-    {
-	emsg_invreg(name);
-	return;
-    }
-
     if (name == '_')	    /* black hole: nothing to do */
 	return;
 
-    /* Don't want to change the current (unnamed) register */
+    if (init_write_reg(name, &old_y_previous, &old_y_current, must_append,
-    old_y_previous = y_previous;
+		&yank_type) == FAIL)
-    old_y_current = y_current;
+	return;
 
-    get_yank_register(name, TRUE);
+    str_to_reg(y_current, yank_type, str, len, block_len, FALSE);
-    if (!y_append && !must_append)
-	free_yank_all();
-    str_to_reg(y_current, yank_type, str, len, block_len);
 
-# ifdef FEAT_CLIPBOARD
+    finish_write_reg(name, old_y_previous, old_y_current);
-    /* Send text of clipboard register to the clipboard. */
-    may_set_selection();
-# endif
-
-    /* ':let @" = "val"' should change the meaning of the "" register */
-    if (name != '"')
-	y_previous = old_y_previous;
-    y_current = old_y_current;
 }
 #endif	/* FEAT_EVAL */
 
@@ -6407,12 +6475,13 @@ write_reg_contents_ex(name, str, maxlen, must_append, yank_type, block_len)
  * is appended.
  */
     static void
-str_to_reg(y_ptr, yank_type, str, len, blocklen)
+str_to_reg(y_ptr, yank_type, str, len, blocklen, str_list)
     struct yankreg	*y_ptr;		/* pointer to yank register */
     int			yank_type;	/* MCHAR, MLINE, MBLOCK, MAUTO */
     char_u		*str;		/* string to put in register */
     long		len;		/* length of string */
     long		blocklen;	/* width of Visual block */
+    int			str_list;	/* TRUE if str is char_u ** */
 {
     int		type;			/* MCHAR, MLINE or MBLOCK */
     int		lnum;
@@ -6423,6 +6492,7 @@ str_to_reg(y_ptr, yank_type, str, len, blocklen)
     int		extraline = 0;		/* extra line at the end */
     int		append = FALSE;		/* append to last line in register */
     char_u	*s;
+    char_u	**ss;
     char_u	**pp;
     long	maxlen;
 
@@ -6430,7 +6500,8 @@ str_to_reg(y_ptr, yank_type, str, len, blocklen)
 	y_ptr->y_size = 0;
 
     if (yank_type == MAUTO)
-	type = ((len > 0 && (str[len - 1] == NL || str[len - 1] == CAR))
+	type = ((str_list || (len > 0 && (str[len - 1] == NL
+					    || str[len - 1] == CAR)))
 							     ? MLINE : MCHAR);
     else
 	type = yank_type;
@@ -6439,6 +6510,13 @@ str_to_reg(y_ptr, yank_type, str, len, blocklen)
      * Count the number of lines within the string
      */
     newlines = 0;
+    if (str_list)
+    {
+	for (ss = (char_u **) str; *ss != NULL; ++ss)
+	    ++newlines;
+    }
+    else
+    {
 	for (i = 0; i < len; i++)
 	    if (str[i] == '\n')
 		++newlines;
@@ -6452,6 +6530,7 @@ str_to_reg(y_ptr, yank_type, str, len, blocklen)
 	    append = TRUE;
 	    --newlines;	/* uncount newline when appending first line */
 	}
+    }
 
     /*
      * Allocate an array to hold the pointers to the new register lines.
@@ -6470,6 +6549,18 @@ str_to_reg(y_ptr, yank_type, str, len, blocklen)
     /*
      * Find the end of each line and save it into the array.
      */
+    if (str_list)
+    {
+	for (ss = (char_u **) str; *ss != NULL; ++ss, ++lnum)
+	{
+	    i = STRLEN(*ss);
+	    pp[lnum] = vim_strnsave(*ss, i);
+	    if (i > maxlen)
+		maxlen = i;
+	}
+    }
+    else
+    {
 	for (start = 0; start < len + extraline; start += i + 1)
 	{
 	    for (i = start; i < len; ++i)	/* find the end of the line */
@@ -6505,6 +6596,7 @@ str_to_reg(y_ptr, yank_type, str, len, blocklen)
 	    }
 	    append = FALSE;		    /* only first line is appended */
 	}
+    }
     y_ptr->y_type = type;
     y_ptr->y_size = lnum;
     if (type == MBLOCK)

src/proto/ops.pro

@@ -56,6 +56,7 @@ char_u get_reg_type __ARGS((int regname, long *reglen));
 char_u *get_reg_contents __ARGS((int regname, int flags));
 void write_reg_contents __ARGS((int name, char_u *str, int maxlen, int must_append));
 void write_reg_contents_ex __ARGS((int name, char_u *str, int maxlen, int must_append, int yank_type, long block_len));
+void write_reg_contents_lst __ARGS((int name, char_u **strings, int maxlen, int must_append, int yank_type, long block_len));
 void clear_oparg __ARGS((oparg_T *oap));
 void cursor_pos_info __ARGS((void));
 /* vim: set ft=c : */

src/testdir/test_eval.in

@@ -1,21 +1,150 @@
-Test for various eval features.
+Test for various eval features.   vim: set ft=vim :
+
+Note: system clipboard support is not tested. I do not think anybody will thank 
+me for messing with clipboard.
 
 STARTTEST
 :so small.vim
+:set encoding=latin1
+:set noswapfile
+:lang C
+:fun AppendRegContents(reg)
+    call append('$', printf('%s: type %s; value: %s (%s), expr: %s (%s)', a:reg, getregtype(a:reg), getreg(a:reg), string(getreg(a:reg, 0, 1)), getreg(a:reg, 1), string(getreg(a:reg, 1, 1))))
+endfun
+:command -nargs=? AR :call AppendRegContents(<q-args>)
+:fun SetReg(...)
+    call call('setreg', a:000)
+    call append('$', printf('{{{2 setreg(%s)', string(a:000)[1:-2]))
+    call AppendRegContents(a:1)
+    if a:1 isnot# '='
+        execute "silent normal! Go==\n==\e\"".a:1."P"
+    endif
+endfun
+:fun ErrExe(str)
+    call append('$', 'Executing '.a:str)
+    try
+        execute a:str
+    catch
+        $put =v:exception
+    endtry
+endfun
+:fun Test()
+$put ='{{{1 let tests'
+let @" = 'abc'
+AR "
+let @" = "abc\n"
+AR "
+let @" = "abc\<C-m>"
+AR "
+let @= = '"abc"'
+AR =
+
+$put ='{{{1 Basic setreg tests'
+call SetReg('a', 'abcA', 'c')
+call SetReg('b', 'abcB', 'v')
+call SetReg('c', 'abcC', 'l')
+call SetReg('d', 'abcD', 'V')
+call SetReg('e', 'abcE', 'b')
+call SetReg('f', 'abcF', "\<C-v>")
+call SetReg('g', 'abcG', 'b10')
+call SetReg('h', 'abcH', "\<C-v>10")
+call SetReg('I', 'abcI')
+
+$put ='{{{1 Appending single lines with setreg()'
+call SetReg('A', 'abcAc', 'c')
+call SetReg('A', 'abcAl', 'l')
+call SetReg('A', 'abcAc2','c')
+call SetReg('b', 'abcBc', 'ca')
+call SetReg('b', 'abcBb', 'ba')
+call SetReg('b', 'abcBc2','ca')
+call SetReg('b', 'abcBb2','b50a')
+
+call SetReg('C', 'abcCl', 'l')
+call SetReg('C', 'abcCc', 'c')
+call SetReg('D', 'abcDb', 'b')
+
+call SetReg('E', 'abcEb', 'b')
+call SetReg('E', 'abcEl', 'l')
+call SetReg('F', 'abcFc', 'c')
+
+$put ='{{{1 Appending NL with setreg()'
+call setreg('a', 'abcA2', 'c')
+call setreg('b', 'abcB2', 'v')
+call setreg('c', 'abcC2', 'l')
+call setreg('d', 'abcD2', 'V')
+call setreg('e', 'abcE2', 'b')
+call setreg('f', 'abcF2', "\<C-v>")
+call setreg('g', 'abcG2', 'b10')
+call setreg('h', 'abcH2', "\<C-v>10")
+call setreg('I', 'abcI2')
+
+call SetReg('A', "\n")
+call SetReg('B', "\n", 'c')
+call SetReg('C', "\n")
+call SetReg('D', "\n", 'l')
+call SetReg('E', "\n")
+call SetReg('F', "\n", 'b')
+
+$put ='{{{1 Setting lists with setreg()'
+call SetReg('a', ['abcA3'], 'c')
+call SetReg('b', ['abcB3'], 'l')
+call SetReg('c', ['abcC3'], 'b')
+call SetReg('d', ['abcD3'])
+
+$put ='{{{1 Appending lists with setreg()'
+call SetReg('A', ['abcA3c'], 'c')
+call SetReg('b', ['abcB3l'], 'la')
+call SetReg('C', ['abcC3b'], 'lb')
+call SetReg('D', ['abcD32'])
+
+call SetReg('A', ['abcA32'])
+call SetReg('B', ['abcB3c'], 'c')
+call SetReg('C', ['abcC3l'], 'l')
+call SetReg('D', ['abcD3b'], 'b')
+
+$put ='{{{1 Appending lists with NL with setreg()'
+call SetReg('A', ["\n", 'abcA3l2'], 'l')
+call SetReg('B', ["\n", 'abcB3c2'], 'c')
+call SetReg('C', ["\n", 'abcC3b2'], 'b')
+call SetReg('D', ["\n", 'abcD3b50'],'b50')
+
+$put ='{{{1 Setting lists with NLs with setreg()'
+call SetReg('a', ['abcA4-0', "\n", "abcA4-2\n", "\nabcA4-3", "abcA4-4\nabcA4-4-2"])
+call SetReg('b', ['abcB4c-0', "\n", "abcB4c-2\n", "\nabcB4c-3", "abcB4c-4\nabcB4c-4-2"], 'c')
+call SetReg('c', ['abcC4l-0', "\n", "abcC4l-2\n", "\nabcC4l-3", "abcC4l-4\nabcC4l-4-2"], 'l')
+call SetReg('d', ['abcD4b-0', "\n", "abcD4b-2\n", "\nabcD4b-3", "abcD4b-4\nabcD4b-4-2"], 'b')
+call SetReg('e', ['abcE4b10-0', "\n", "abcE4b10-2\n", "\nabcE4b10-3", "abcE4b10-4\nabcE4b10-4-2"], 'b10')
+
+$put ='{{{1 Search and expressions'
+call SetReg('/', ['abc/'])
+call SetReg('/', ["abc/\n"])
+call SetReg('=', ['"abc/"'])
+call SetReg('=', ["\"abc/\n\""])
+
+$put ='{{{1 Errors'
+call ErrExe('call setreg()')
+call ErrExe('call setreg(1)')
+call ErrExe('call setreg(1, 2, 3, 4)')
+call ErrExe('call setreg([], 2)')
+call ErrExe('call setreg(1, {})')
+call ErrExe('call setreg(1, 2, [])')
+call ErrExe('call setreg("/", [1, 2])')
+call ErrExe('call setreg("=", [1, 2])')
+call ErrExe('call setreg(1, ["", "", [], ""])')
+endfun
 :"
-:" test getreg()
+:call Test()
-/^one
-"ay3j:$put =string(getreg('a'))
-:$put =string(getreg('a', 1, 1))
 :"
-:/^result/,$w! test.out
+:delfunction SetReg
-:qa!
+:delfunction AppendRegContents
+:delfunction ErrExe
+:delfunction Test
+:delcommand AR
+:call garbagecollect(1)
+:"
+:/^start:/+1,$wq! test.out
+:" vim: et ts=4 isk-=\: fmr=???,???
+:call getchar()
 ENDTEST
 
-one
+start:
-two
-three
-four
-five
-
-result

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    243,
 /**/
     242,
 /**/