diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 4b2564b..ddfe103 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -3439,22 +3439,32 @@
     {
 	/* compensate for the one line read-ahead */
 	--sourcing_lnum;
-	for (;;)
+
+	/* 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)) == '\\')
 	{
-	    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)));
-	    if (s == NULL)	/* out of memory */
-		break;
-	    STRCPY(s, line);
-	    STRCAT(s, p + 1);
+	    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;
+		ga_concat(&ga, p + 1);
+	    }
+	    ga_append(&ga, NUL);
 	    vim_free(line);
-	    line = s;
-	    vim_free(sp->nextline);
+	    line = ga.ga_data;
 	}
     }
 
diff --git a/src/version.c b/src/version.c
index c1c568d..7fd75fd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    433,
+/**/
     432,
 /**/
     431,