Hmm I don't think it would be a good idea to allow dash-escaping of
literally anything because then you can't reverse the transformation
and '- ' is commonly used for bullet points where as the other cases
----- separated nested PGP signatures and other content types are not
common, and 'From ' is a prexisting common exception.
Isn't it rather just:
- dash escape nested -----BEGIN PGP MESSAGE----- (et al)
- dash escape From
Adam
On Fri, Mar 07, 2003 at 08:46:34AM -0500, David Shaw wrote:
Section 7.1 (Dash-Escaped Text) of bis-07 says, in part, that
dash-escaped text is "the ordinary cleartext where every line starting
with a dash '-' (0x2D) is prefixed by the sequence dash '-' (0x2D) and
space ' ' (0x20)."
Since the most common use of dash-escaped text is in email, both PGP
and GnuPG (by default) also dash-escape lines starting with the word
"From " (with the space). This is for the usual mbox-inspired
reasons. If the "From " line isn't escaped, then some downstream mail
system may escape it, thus breaking the signature.
Nothing in the draft seems to discourage dash-escaping more than just
the lines beginning with a dash. Still, I am concerned with the
receiving side not knowing that these other lines may be escaped as
well (they may match on a dash-space-dash at the beginning of the
line, rather than dash-space). A sentence saying something like "Any
other line MAY be dash-escaped as well at the discretion of the
sender" would be very helpful here.
David