X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/0756eb3cb50d73a77b486e47528f7cb1bffdb299..a5bdc7ee1e3d69ff9e32987a58ebae94043db9e2:/src/src/lookups/lf_quote.c

diff --git a/src/src/lookups/lf_quote.c b/src/src/lookups/lf_quote.c
index 9cc291723..2a76756e9 100644
--- a/src/src/lookups/lf_quote.c
+++ b/src/src/lookups/lf_quote.c
@@ -1,10 +1,8 @@
-/* $Cambridge: exim/src/src/lookups/lf_quote.c,v 1.1 2004/10/07 13:10:01 ph10 Exp $ */
-
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2004 */
+/* Copyright (c) University of Cambridge 1995 - 2009 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -39,7 +37,11 @@ result = string_append(result, asize, aoffset, 2, name, US"=");
 
 /* NULL is handled as an empty string */
 
-if (value == NULL) value = US"";
+if (!value)
+  {
+  value = US"";
+  vlength = 0;
+  }
 
 /* Quote the value if it is empty, contains white space, or starts with a quote
 character. */
@@ -47,21 +49,19 @@ character. */
 if (value[0] == 0 || Ustrpbrk(value, " \t\n\r") != NULL || value[0] == '\"')
   {
   int j;
-  result = string_cat(result, asize, aoffset, US"\"", 1);
+  result = string_catn(result, asize, aoffset, US"\"", 1);
   for (j = 0; j < vlength; j++)
     {
     if (value[j] == '\"' || value[j] == '\\')
-      result = string_cat(result, asize, aoffset, US"\\", 1);
-    result = string_cat(result, asize, aoffset, US value+j, 1);
+      result = string_catn(result, asize, aoffset, US"\\", 1);
+    result = string_catn(result, asize, aoffset, US value+j, 1);
     }
-  result = string_cat(result, asize, aoffset, US"\"", 1);
+  result = string_catn(result, asize, aoffset, US"\"", 1);
   }
 else
-  {
-  result = string_cat(result, asize, aoffset, US value, vlength);
-  }
+  result = string_catn(result, asize, aoffset, US value, vlength);
 
-return string_cat(result, asize, aoffset, US" ", 1);
+return string_catn(result, asize, aoffset, US" ", 1);
 }
 
 /* End of lf_quote.c */