Packets with bytes attribute, without encoding attribute, writable and all quote combos           |
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          1         2         3         4         5         6         7         8         9       9
 4 345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
 5 all single quotes:                                                                             |
 6 +++hG <?xpacket begin='' id='W5M0MpCehiHzreSzNTczkc9d' bytes='400'?>         <?xpacket end='w'?>
                                                                                                   
                                                                                                   
                                                                                                   
         ---pG
11 all double quotes:                                                                             |                                                      |
12 +++hG <?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d" bytes="400"?>         <?xpacket end="w"?>
                                                                                                   
                                                                                                   
                                                                                                   
         ---pG
17 all but one single quote:                                                                      |                                                               |
18 +++hG <?xpacket begin='' id="W5M0MpCehiHzreSzNTczkc9d" bytes='400'?>         <?xpacket end='w'?>
                                                                                                   
                                                                                                   
                                                                                                   
         ---pG
24 all but one double quote:                                                                      |      
25 +++hG <?xpacket begin='' id="W5M0MpCehiHzreSzNTczkc9d" bytes="400"?>         <?xpacket end="w"?>
                                                                                                   
                                                                                                   
                                                                                                   
         ---pG                                                                                    |
30        1         2         3         4         5         6         7         8         9       9
31 345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
