specific headers that contain lists of addresses, a comma is inserted between
them. Otherwise we use a straight concatenation. Because some messages can have
pathologically large number of lines, there is a limit on the length that is
specific headers that contain lists of addresses, a comma is inserted between
them. Otherwise we use a straight concatenation. Because some messages can have
pathologically large number of lines, there is a limit on the length that is
-returned. Also, to avoid massive store use which would result from using
-string_cat() as it copies and extends strings, we do a preliminary pass to find
-out exactly how much store will be needed. On "normal" messages this will be
-pretty trivial.
other than concatenating, will be done on the header. Also used
for $message_headers_raw.
FH_WANT_LIST
other than concatenating, will be done on the header. Also used
for $message_headers_raw.
FH_WANT_LIST