+/* Store the string FIELD, followed by any lines in THE_LIST,
+ into the buffer WHERE.
+ Concatenate lines, putting just a space between them.
+ Delete everything contained in parentheses.
+ When a recipient name contains <...>, we discard
+ everything except what is inside the <...>.
+
+ We don't pay attention to overflowing WHERE;
+ the caller has to make it big enough. */
+