X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/da831514de01e2407cef37c118ffff0526a486d0..2b63c01aa93210f7c6b812c135173812793c7176:/sbr/utils.c

diff --git a/sbr/utils.c b/sbr/utils.c
index d822995b..cce73785 100644
--- a/sbr/utils.c
+++ b/sbr/utils.c
@@ -2,8 +2,6 @@
 /*
  * utils.c -- various utility routines
  *
- * $Id$
- *
  * This code is Copyright (c) 2006, by the authors of nmh.  See the
  * COPYRIGHT file in the root directory of the nmh distribution for
  * complete copyright information.
@@ -47,6 +45,10 @@ mh_xrealloc(void *ptr, size_t size)
 {
     void *memory;
 
+    /* Some non-POSIX realloc()s don't cope with realloc(NULL,sz) */
+    if (!ptr)
+        return mh_xmalloc(size);
+
     if (size == 0)
         adios(NULL, "Tried to realloc 0bytes");
 
@@ -120,6 +122,19 @@ add (char *s2, char *s1)
     return cp;
 }
 
+/*
+ * addlist
+ *	Append an item to a comma separated list
+ */
+char *
+addlist (char *list, char *item)
+{
+    if (list)
+    	list = add (", ", list);
+
+    return add (item, list);
+}
+
 /*
  * folder_exists
  *      Check to see if a folder exists.