updated for version 7.3.433

Problem:    Using continued lines in a Vim script can be slow.
Solution:   Instead of reallocating for every line use a growarray. (Yasuhiro
            Matsumoto)

src/ex_cmds2.c

@@ -3439,22 +3439,32 @@ getsourceline(c, cookie, indent)
     {
 	/* compensate for the one line read-ahead */
 	--sourcing_lnum;
+
+	/* Get the next line and concatenate it when it starts with a
+	 * backslash. We always need to read the next line, keep it in
+	 * sp->nextline. */
+	sp->nextline = get_one_sourceline(sp);
+	if (sp->nextline != NULL && *(p = skipwhite(sp->nextline)) == '\\')
+	{
+	    garray_T    ga;
+
+	    ga_init2(&ga, (int)sizeof(char_u), 200);
+	    ga_concat(&ga, line);
+	    ga_concat(&ga, p + 1);
 	    for (;;)
 	    {
+		vim_free(sp->nextline);
 		sp->nextline = get_one_sourceline(sp);
 		if (sp->nextline == NULL)
 		    break;
 		p = skipwhite(sp->nextline);
 		if (*p != '\\')
 		    break;
-	    s = alloc((unsigned)(STRLEN(line) + STRLEN(p)));
+		ga_concat(&ga, p + 1);
-	    if (s == NULL)	/* out of memory */
+	    }
-		break;
+	    ga_append(&ga, NUL);
-	    STRCPY(s, line);
-	    STRCAT(s, p + 1);
 	    vim_free(line);
-	    line = s;
+	    line = ga.ga_data;
-	    vim_free(sp->nextline);
 	}
     }
 

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    433,
 /**/
     432,
 /**/