check line coding before sending mail

[Frederik Fouvry]

Symptoms:


A buffer that sends mail had best check the line coding before
piping it into the sendmail program, and - if necessary - convert
it first.

I'm on a gnu/linux system, and was trying to send a message from
a file created on a Mac.  It took me some time to find out what
was going wrong.


In GNU Emacs 22.0.50.7 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2005-07-26 on cc.at.coli.uni-sb.de
X server distributor `The XFree86 Project, Inc', version 11.0.40201000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: POSIX
  value of $LC_CTYPE: en_GB.ISO8859-15
  value of $LC_MESSAGES: en_GB.ISO8859-15
  value of $LC_MONETARY: address@hidden
  value of $LC_NUMERIC: en_GB.ISO8859-15
  value of $LC_TIME: en_GB.ISO8859-15
  value of $LANG: en_GB.ISO8859-15
  locale-coding-system: iso-8859-15
  default-enable-multibyte-characters: t