Maps: are keys reliably unique?

[mgravell]

The specification indicates that they should be treated as a dictionary / hash structure, but it isn't clear what should happen if duplicate keys are encountered. The specific scenarios are shared with #35

and could be re-stated:

How is the following to be interpreted?

%2<CR><LF>
    +ttl<CR><LF>
    :3600<CR><LF>
    +ttl<CR><LF>
    :9001<CR><LF>
:3<CR><LF>

is this:

• illegal
• valid, last value wins (so: ttl = 9001)
• valid, all values should be preserved (so: ttl = [3600, 9001] in some way)
• something else?

[mgravell]

additional thought on equality: which (if any) of the following are considered "equal" for this purpose?

• +1\r\n
• -1\r\n
• :1\r\n
• ,1\r\n
• (1\r\n
• =1\r\n1\r\n
• $1\r\n1\r\n
• !1\r\n1\r\n
• $?\r\n;1\r\n1\r\n;0\r\n