🚀 go-pugleaf

On 2/12/2011 7:24 PM, José Manuel García-Patos wrote:
> Uday Reddy<uDOTsDOTreddy@cs.bham.ac.uk>  writes:
>
>> The VM code is in the function vm-find-leading-message-separator in
>> the file vm-folder.el.  All that it looks for is "From " at the
>> beginning of the line and some sequence of digits at the end of the
>> line.  The RFC 4155 is unfortunately very loose.  It doesn't guarantee
>> the leading separator line to be a particular format.  So, VM can't
>> assume too much about the format of the separator line.
>
> Given the RFC says that there has to be an email address «conformant with
> the "addr-spec" syntax from RFC 2822», couldn't the regexp in
> vm-find-leading-message-separator be something more like the following?
>
> "^From .+@.+ .+ [+-]?[0-9][0-9][0-9][0-9]$"
>
> That would eliminate most, though probably not all, false positives.

After looking at the RFC 4122 more closely, I notice that it defines a 
"default" mbox format that is more tightly defined.  This RFC came out 
only in 2005, it seems, and then too it is only an "informational" RFC, 
not a standard.  So, if we want compatibility with other mail tools, we 
cannot depend on it.

My Thunderbird folders have leading separator lines like the following:

           From - Sun Oct 03 00:20:05 2010

VM itself produces separator lines like this:

           From VM Mon Feb  6 16:51:47 2006

Neither of these would satisfy your syntax.

There could be value in defining a new mbox type for VM that is RFC 
4122-compliant.  I will think about it.

Cheers,
Uday