See Michael Young's example: doing so breaks existing otherwise
compliant implementations.
'From ' is pretty much the only thing interesting to protect in an
email message, as it is a separator between email messages.
The '-' escape was just a way to protect nested signatures etc to
avoid confusing the parser of the outer signatures.
The rule's been that way since at least 1992, and I haven't seen any
new chars needing quoting. So it's survived the test of time.
Adam
On Fri, Mar 07, 2003 at 07:39:58PM -0500, David Shaw wrote:
- dash escape leading '-'
- dash escape 'From '
and that's it.
I disagree. Tomorrow will bring some other thing that needs to be
protected against modification. A single rule that "anything may be
dash-escaped" is simpler and more general than two specific rules.
David