patch 9.0.0096: flag "new_value_alloced" is always true

Problem:    Flag "new_value_alloced" is always true.
Solution:   Remove "new_value_alloced". (closes #10792)

src/option.c

@@ -1716,8 +1716,6 @@ do_set(
 #endif
 			unsigned  newlen;
 			int	  comma;
-			int	  new_value_alloced;	// new string option
-							// was allocated
 
 			// When using ":set opt=val" for a global option
 			// with a local value the local value will be
@@ -1785,13 +1783,11 @@ do_set(
 				    s = newval;
 				newval = vim_strsave(s);
 			    }
-			    new_value_alloced = TRUE;
 			}
 			else if (nextchar == '<')	// set to global val
 			{
 			    newval = vim_strsave(*(char_u **)get_varp_scope(
 					     &(options[opt_idx]), OPT_GLOBAL));
-			    new_value_alloced = TRUE;
 			}
 			else
 			{
@@ -2060,7 +2056,6 @@ do_set(
 
 			    if (save_arg != NULL)   // number for 'whichwrap'
 				arg = save_arg;
-			    new_value_alloced = TRUE;
 			}
 
 			/*
@@ -2109,8 +2104,7 @@ do_set(
 			    // 'syntax' or 'filetype' autocommands may be
 			    // triggered that can cause havoc.
 			    errmsg = did_set_string_option(
-				    opt_idx, (char_u **)varp,
-				    new_value_alloced, oldval, errbuf,
+				    opt_idx, (char_u **)varp, oldval, errbuf,
 				    opt_flags, &value_checked);
 
 			    secure = secure_saved;

src/optionstr.c

@@ -537,7 +537,7 @@ set_string_option(
 	    saved_newval = vim_strsave(s);
 	}
 #endif
-	if ((errmsg = did_set_string_option(opt_idx, varp, TRUE, oldval, NULL,
+	if ((errmsg = did_set_string_option(opt_idx, varp, oldval, NULL,
 					   opt_flags, &value_checked)) == NULL)
 	    did_set_option(opt_idx, opt_flags, TRUE, value_checked);
 
@@ -639,13 +639,13 @@ check_stl_option(char_u *s)
 
 /*
  * Handle string options that need some action to perform when changed.
+ * The new value must be allocated.
  * Returns NULL for success, or an unstranslated error message for an error.
  */
     char *
 did_set_string_option(
     int		opt_idx,		// index in options[] table
     char_u	**varp,			// pointer to the option variable
-    int		new_value_alloced,	// new value was allocated
     char_u	*oldval,		// previous value of the option
     char	*errbuf,		// buffer for errors, or NULL
     int		opt_flags,		// OPT_LOCAL and/or OPT_GLOBAL
@@ -1188,10 +1188,8 @@ ambw_end:
 	    // When setting the global value to empty, make it "zip".
 	    if (*p_cm == NUL)
 	    {
-		if (new_value_alloced)
 		free_string_option(p_cm);
 		p_cm = vim_strsave((char_u *)"zip");
-		new_value_alloced = TRUE;
 	    }
 	    // When using ":set cm=name" the local value is going to be empty.
 	    // Do that here, otherwise the crypt functions will still use the
@@ -1441,7 +1439,6 @@ ambw_end:
 		t_colors = colors;
 		if (t_colors <= 1)
 		{
-		    if (new_value_alloced)
 		    vim_free(T_CCO);
 		    T_CCO = empty_option;
 		}
@@ -1511,12 +1508,8 @@ ambw_end:
 	    if (STRCMP(p, "*") == 0)
 	    {
 		p = gui_mch_font_dialog(oldval);
-
-		if (new_value_alloced)
 		free_string_option(p_guifont);
-
 		p_guifont = (p != NULL) ? p : vim_strsave(oldval);
-		new_value_alloced = TRUE;
 	    }
 # endif
 	    if (p != NULL && gui_init_font(p_guifont, FALSE) != OK)
@@ -1526,10 +1519,8 @@ ambw_end:
 		{
 		    // Dialog was cancelled: Keep the old value without giving
 		    // an error message.
-		    if (new_value_alloced)
 		    free_string_option(p_guifont);
 		    p_guifont = vim_strsave(oldval);
-		    new_value_alloced = TRUE;
 		}
 		else
 # endif
@@ -1950,10 +1941,8 @@ ambw_end:
 				      REPTERM_FROM_PART | REPTERM_DO_LT, NULL);
 	    if (p != NULL)
 	    {
-		if (new_value_alloced)
 		free_string_option(p_pt);
 		p_pt = p;
-		new_value_alloced = TRUE;
 	    }
 	}
     }
@@ -2369,10 +2358,8 @@ ambw_end:
 	    name = get_scriptlocal_funcname(*p_opt);
 	    if (name != NULL)
 	    {
-		if (new_value_alloced)
 		free_string_option(*p_opt);
 		*p_opt = name;
-		new_value_alloced = TRUE;
 	    }
 	}
 
@@ -2486,7 +2473,6 @@ ambw_end:
     // If error detected, restore the previous value.
     if (errmsg != NULL)
     {
-	if (new_value_alloced)
 	free_string_option(*varp);
 	*varp = oldval;
 	// When resetting some values, need to act on it.
@@ -2506,10 +2492,7 @@ ambw_end:
 	// our fingers (esp. init_highlight()).
 	if (free_oldval)
 	    free_string_option(oldval);
-	if (new_value_alloced)
 	set_option_flag(opt_idx, P_ALLOCED);
-	else
-	    clear_option_flag(opt_idx, P_ALLOCED);
 
 	if ((opt_flags & (OPT_LOCAL | OPT_GLOBAL)) == 0
 		&& is_global_local_option(opt_idx))

src/proto/optionstr.pro

@@ -9,6 +9,6 @@ void set_string_option_direct(char_u *name, int opt_idx, char_u *val, int opt_fl
 void set_string_option_direct_in_win(win_T *wp, char_u *name, int opt_idx, char_u *val, int opt_flags, int set_sid);
 void set_string_option_direct_in_buf(buf_T *buf, char_u *name, int opt_idx, char_u *val, int opt_flags, int set_sid);
 char *set_string_option(int opt_idx, char_u *value, int opt_flags);
-char *did_set_string_option(int opt_idx, char_u **varp, int new_value_alloced, char_u *oldval, char *errbuf, int opt_flags, int *value_checked);
+char *did_set_string_option(int opt_idx, char_u **varp, char_u *oldval, char *errbuf, int opt_flags, int *value_checked);
 int check_ff_value(char_u *p);
 /* vim: set ft=c : */

src/version.c

@@ -735,6 +735,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    96,
 /**/
     95,
 /**/