Support for Apple multicoloured flags

[rgfincher]

Apple computers and devices extend the use of IMAP flags (normally just set or unset) to support 7 different colours of flags, using a proprietary modification of IMAP and binary 000 -> 111 settings.  This implementation is backwards compatible with non-Apple devices in that setting any colour of apple flag will just show as flagged on a non-apple device, and setting the single flag colour on a non-Apple device will just set a red colour flag on Apple.  

I think it would be relatively simple to support this standard.  Microsoft Exchange/365 also has multi-coloured flags using its own proprietary standard which I expect you already support. 

[Jon]

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[rgfincher]

 

This is how I use Apple multi-coloured flags in my Apple Mail.  The same coloured flats persist / sync across my other Apple computers, and IOS/iPadOS devices.  Would be great for Thunderbird Android to also pick these up.

[rgfincher]

Binary 000 - remove tag

Binary 001 - set tag (default colour)

Binary 010 - RED FLAG

Binary 011 - ORANGE FLAG

Binary 100 - YELLOW FLAG

Binary 101 - GREEN FLAG

Binary 110 - BLUE FLAG

Binary 111 - PURPLE FLAG

0 = ( "removeTag:", "\\Flagged", "removeTag:", "$MailFlagBit2", "removeTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit0" );

1 = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit2", "removeTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit0" );

RED    2 = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit2", "removeTag:", "$MailFlagBit1",    "setTag:", "$MailFlagBit0" );

ORANGE 3 = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit2",    "setTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit0" );

YELLOW 4 = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit2",    "setTag:", "$MailFlagBit1",    "setTag:", "$MailFlagBit0" );

GREEN  5 = (    "setTag:", "\\Flagged",    "setTag:", "$MailFlagBit2", "removeTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit0" );

BLUE 6 = (    "setTag:", "\\Flagged",    "setTag:", "$MailFlagBit2", "removeTag:", "$MailFlagBit1",    "setTag:", "$MailFlagBit0" );

PURPLE 7 = (    "setTag:", "\\Flagged",    "setTag:", "$MailFlagBit2",    "setTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit0" );

GREY ????

Here are the default key bindings which also shows you how the various 

flags are generated:

"F" = {

"0" = ( "removeTag:", "\\Flagged", "removeTag:", "$MailFlagBit0", "removeTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit2" );

"1" = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit0", "removeTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit2" );

"2" = (    "setTag:", "\\Flagged",    "setTag:", "$MailFlagBit0", "removeTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit2" );

"3" = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit0",    "setTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit2" );

"4" = (    "setTag:", "\\Flagged",    "setTag:", "$MailFlagBit0",    "setTag:", "$MailFlagBit1", "removeTag:", "$MailFlagBit2" );

"5" = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit0", "removeTag:", "$MailFlagBit1",    "setTag:", "$MailFlagBit2" );

"6" = (    "setTag:", "\\Flagged",    "setTag:", "$MailFlagBit0", "removeTag:", "$MailFlagBit1",    "setTag:", "$MailFlagBit2" );

"7" = (    "setTag:", "\\Flagged", "removeTag:", "$MailFlagBit0",    "setTag:", "$MailFlagBit1",    "setTag:", "$MailFlagBit2" );

};

Colors are (2-7) red, orange, yellow, green, blue, purple, gray. In 

otherwords, number 4 above is what you need to do to generate a yellow 

flag.Here are the default key bindings which also shows you how the various 

flags are generated: