From cph at zurich.ai.mit.edu  Wed Mar 21 21:08:13 2001
From: cph at zurich.ai.mit.edu (Chris Hanson)
Date: Sat Dec  3 00:52:10 2005
Subject: [info-cscheme] MIT Scheme 7.5.16 is released
Message-ID: <E14fuWL-0000XT-00@h0040100ce097.ne.mediaone.net>

MIT Scheme 7.5.16 is released, and is available at the usual places:

    http://www.swiss.ai.mit.edu/projects/scheme/7.5/
    ftp://ftp.swiss.ai.mit.edu/pub/scheme-7.5/


Release notes:

Release 7.5.16 fixes two limitations in email support.  First, the
mail-sending interface has been reworked to generate the formatted
message to a temporary file rather than a buffer.  This allows sending
very large attachments.  Second, IMAIL's handling of file-based folders
has been reworked to store a copy of the file in an "external string"
The in-heap data structures no longer contain excerpts from the file,
but instead keep indexes into the file and extract the excerpts on
demand.  This allows reading very large mail files with reasonably-sized
heaps (however it does require enough virtual memory to hold an image of
the file).  The actual in-heap storage is quite small, approximately 100
bytes per message.