• Kirill Smelkov's avatar
    test/gen_testdata: Make sure that "with zext" and "without zext" databases... · 395d8c27
    Kirill Smelkov authored
    test/gen_testdata: Make sure that "with zext" and "without zext" databases differ only in transaction extension
    
    Previously diff in between 1.zdump.zpickledis.ok and 1_!zext.zdump.zpickledis.ok
    indicated difference in many data records as demonstrated in the appendix.
    That was due to that !zext variant, while skipping generating
    transaction extension, contrary to zext variant, did not consumed PRNG
    output, and so when going further PRNG state for zext and !zext variants
    was diverging.
    
    -> Fix it via consuming PRNG output in !zext case exactly the same way
    as in zext case, but throwing out ext4subj output.
    
    After the patch the diff in between `1.zdump.zpickledis.ok
    1_\!zext.zdump.zpickledis.ok` shows only differences in between
    txn.extension fields:
    
        --- a/1.zdump.zpickledis.ok
        +++ b/1_!zext.zdump.zpickledis.ok
        @@ -1,19 +1,7 @@
         txn 0285cbac75555580 "p"
         user "user0.12"
         description "step 0.12"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie8'
        -     17: U        SHORT_BINSTRING '2MHMU'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (f)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        +extension ""
         obj 0000000000000001 34 sha1:9fae782fe3e33273b520c954925704856ca90dc6
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
         ...
    
    Appendix. `1.zdump.zpickledis.ok 1_\!zext.zdump.zpickledis.ok` before this patch
    
        diff --git a/1.zdump.zpickledis.ok b/1_!zext.zdump.zpickledis.ok
        index 9385444..f80531d 100644
        --- a/1.zdump.zpickledis.ok
        +++ b/1_!zext.zdump.zpickledis.ok
        @@ -1,114 +1,49 @@
        -txn 0285cbac75555580 "p"
        -user "user0.12"
        -description "step 0.12"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie8'
        -     17: U        SHORT_BINSTRING '2MHMU'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (f)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000001 34 sha1:9fae782fe3e33273b520c954925704856ca90dc6
        -      0: \x80 PROTO      2
        -      2: c    GLOBAL     '__main__ Object'
        -     19: q    BINPUT     1
        -     21: .    STOP
        -  highest protocol among opcodes = 2
        -     22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'f0.12'
        -     31: q    BINPUT     2
        -     33: .    STOP
        -  highest protocol among opcodes = 2
        -
        -
         txn 0285cbac8369d066 "p"
         user "user0.15"
         description "step 0.15"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieY'
        -     17: U        SHORT_BINSTRING 'EDZ10'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:5dbf26359289e5a25f9755f832ea91cc8ee76686
        +extension ""
        +obj 0000000000000003 34 sha1:e616d80f35ea7aaaecdbc65e1e5838c25f4bf07a
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e0.15'
        +     24: U    SHORT_BINSTRING 'b0.15'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
    
        -txn 0285cbac962fc999 "p"
        -user "user0.19"
        -description "step 0.19"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieF'
        -     17: U        SHORT_BINSTRING 'OUC9L'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (a)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000005 34 sha1:9e0a8797eb8f60498563703b1961126fba35be9b
        +txn 0285cbac9f92c633 "p"
        +user "user0.21"
        +description "step 0.21"
        +extension ""
        +obj 0000000000000001 34 sha1:025d34759b434419251b5a429f3ad78ce3c2fd98
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'a0.19'
        +     24: U    SHORT_BINSTRING 'f0.21'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
    
        -txn 0285cbac9f92c633 "p"
        -user "user0.21"
        -description "step 0.21"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie8'
        -     17: U        SHORT_BINSTRING '0QC1A'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 34 sha1:009174c1f01142f24495fa13738749ff528fd82c
        +txn 0285cbaca4444480 "p"
        +user "user0.22"
        +description "step 0.22"
        +extension ""
        +obj 0000000000000006 34 sha1:0734767857e69ab8bfd0007d4ca3f1a7fd69b677
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd0.21'
        +     24: U    SHORT_BINSTRING 'g0.22'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -117,27 +52,15 @@ obj 0000000000000002 34 sha1:009174c1f01142f24495fa13738749ff528fd82c
         txn 0285cbacb70a3db3 "p"
         user "root0.1\nYour\nMagesty "
         description "undo 0.1\nmore detailed description\n\nzzz ...\t"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieV'
        -     17: U        SHORT_BINSTRING 'VHBGT'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (undo AoXLrK2nQRk=)'
        -     69: u        SETITEMS   (MARK at 5)
        -     70: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 34 sha1:484358413b2746e8a05b1e3173051abedd28e1fa
        +extension ""
        +obj 0000000000000004 34 sha1:fe21381adc01e51965c3278c6debf52ebd63068c
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g0.11'
        +     24: U    SHORT_BINSTRING 'd0.11'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -146,27 +69,15 @@ obj 0000000000000003 34 sha1:484358413b2746e8a05b1e3173051abedd28e1fa
         txn 0285cbacbbbbbc00 "p"
         user "user"
         description "cyclic reference"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieE'
        -     17: U        SHORT_BINSTRING 'ZM3QZ'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (cycle)'
        -     57: u        SETITEMS   (MARK at 5)
        -     58: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000007 41 sha1:7108c96ccb9cbeaab1164d533174c300e51309f9
        +extension ""
        +obj 0000000000000002 41 sha1:1e2e3ac81badec749c2082a08d205c06c6bb5119
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
        +     24: U    SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
              34: q    BINPUT     2
              36: h    BINGET     1
              38: \x86 TUPLE2
        @@ -177,9 +88,9 @@ obj 0000000000000007 41 sha1:7108c96ccb9cbeaab1164d533174c300e51309f9
    
         txn 0285cbacc06d3a4c "p"
         user ""
        -description "predelete 4"
        +description "predelete 5"
         extension ""
        -obj 0000000000000000 213 sha1:a6e70638fafd4619841032356ae93a4da7b539c5
        +obj 0000000000000000 194 sha1:4a9e413a4ff168a6a7f84be32b9168364048fd6d
               0: \x80 PROTO      2
               2: c    GLOBAL     'persistent.mapping PersistentMapping'
              40: q    BINPUT     1
        @@ -193,62 +104,56 @@ obj 0000000000000000 213 sha1:a6e70638fafd4619841032356ae93a4da7b539c5
              56: }    EMPTY_DICT
              57: q    BINPUT     4
              59: (    MARK
        -     60: U        SHORT_BINSTRING 'a'
        -     63: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x05'
        +     60: U        SHORT_BINSTRING 'c'
        +     63: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
              73: q        BINPUT     5
              75: c        GLOBAL     '__main__ Object'
              92: q        BINPUT     6
              94: \x86     TUPLE2
              95: Q        BINPERSID
        -     96: U        SHORT_BINSTRING 'c'
        -     99: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
        +     96: U        SHORT_BINSTRING 'b'
        +     99: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x03'
             109: q        BINPUT     7
             111: h        BINGET     6
             113: \x86     TUPLE2
             114: Q        BINPERSID
        -    115: U        SHORT_BINSTRING 'b'
        -    118: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x08'
        +    115: U        SHORT_BINSTRING 'e'
        +    118: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
             128: q        BINPUT     8
             130: h        BINGET     6
             132: \x86     TUPLE2
             133: Q        BINPERSID
        -    134: U        SHORT_BINSTRING 'e'
        -    137: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x06'
        +    134: U        SHORT_BINSTRING 'd'
        +    137: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x04'
             147: q        BINPUT     9
             149: h        BINGET     6
             151: \x86     TUPLE2
             152: Q        BINPERSID
        -    153: U        SHORT_BINSTRING 'd'
        -    156: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
        +    153: U        SHORT_BINSTRING 'g'
        +    156: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x06'
             166: q        BINPUT     10
             168: h        BINGET     6
             170: \x86     TUPLE2
             171: Q        BINPERSID
        -    172: U        SHORT_BINSTRING 'g'
        -    175: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x03'
        +    172: U        SHORT_BINSTRING 'f'
        +    175: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x01'
             185: q        BINPUT     11
             187: h        BINGET     6
             189: \x86     TUPLE2
             190: Q        BINPERSID
        -    191: U        SHORT_BINSTRING 'f'
        -    194: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x01'
        -    204: q        BINPUT     12
        -    206: h        BINGET     6
        -    208: \x86     TUPLE2
        -    209: Q        BINPERSID
        -    210: u        SETITEMS   (MARK at 59)
        -    211: s    SETITEM
        -    212: .    STOP
        +    191: u        SETITEMS   (MARK at 59)
        +    192: s    SETITEM
        +    193: .    STOP
           highest protocol among opcodes = 2
    
        -obj 0000000000000008 32 sha1:936674657cf846998d27356363832827fa612092
        +obj 0000000000000007 32 sha1:b9d61167d2388ac320b1bc2940b43e7a8bad46ac
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'b0*'
        +     24: U    SHORT_BINSTRING 'e0*'
              29: q    BINPUT     2
              31: .    STOP
           highest protocol among opcodes = 2
        @@ -257,20 +162,8 @@ obj 0000000000000008 32 sha1:936674657cf846998d27356363832827fa612092
         txn 0285cbad06d3a0cc " "
         user "user1.0"
         description "step 1.0"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieE'
        -     17: U        SHORT_BINSTRING 'VAZ3U'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 33 sha1:f18e991b87b63cf1f9486d74d70020ff8d573eec
        +extension ""
        +obj 0000000000000007 33 sha1:f18e991b87b63cf1f9486d74d70020ff8d573eec
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -286,27 +179,15 @@ obj 0000000000000006 33 sha1:f18e991b87b63cf1f9486d74d70020ff8d573eec
         txn 0285cbad0b851f19 " "
         user "user1.1"
         description "step 1.1"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieN'
        -     17: U        SHORT_BINSTRING 'GSV4I'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (b)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000008 33 sha1:c37e1d2350c8fc4e18cdbc53b432dba50e5196ba
        +extension ""
        +obj 0000000000000006 33 sha1:bf4f1be3d63bca5c7dccf98f7660f419597a0f3d
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'b1.1'
        +     24: U    SHORT_BINSTRING 'g1.1'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -315,20 +196,8 @@ obj 0000000000000008 33 sha1:c37e1d2350c8fc4e18cdbc53b432dba50e5196ba
         txn 0285cbad10369d66 " "
         user "user1.2"
         description "step 1.2"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieY'
        -     17: U        SHORT_BINSTRING 'A01OK'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 33 sha1:28e9880fc0f50a9fea5c4a9e861adc1fe44c9f5c
        +extension ""
        +obj 0000000000000006 33 sha1:28e9880fc0f50a9fea5c4a9e861adc1fe44c9f5c
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -344,27 +213,15 @@ obj 0000000000000003 33 sha1:28e9880fc0f50a9fea5c4a9e861adc1fe44c9f5c
         txn 0285cbad14e81bb3 " "
         user "user1.3"
         description "step 1.3"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-generator'
        -     19: q        BINPUT     2
        -     21: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     35: U        SHORT_BINSTRING 'x-cookieW'
        -     46: U        SHORT_BINSTRING '1QPNP'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 33 sha1:5fb466e36ea6f847b73ad7976def8ad60e00e766
        +extension ""
        +obj 0000000000000004 33 sha1:e8796affc44d563a09a2913907f91467a34498fc
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g1.3'
        +     24: U    SHORT_BINSTRING 'd1.3'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -373,27 +230,15 @@ obj 0000000000000003 33 sha1:5fb466e36ea6f847b73ad7976def8ad60e00e766
         txn 0285cbad19999a00 " "
         user "user1.4"
         description "step 1.4"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieC'
        -     17: U        SHORT_BINSTRING 'J7L05'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (c)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000007 33 sha1:90b0ffa657df9de708913a2cbbd454126fd9de15
        +extension ""
        +obj 0000000000000006 33 sha1:15a38343610d25057cd88521669671350eb0c0a8
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'c1.4'
        +     24: U    SHORT_BINSTRING 'g1.4'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -402,27 +247,15 @@ obj 0000000000000007 33 sha1:90b0ffa657df9de708913a2cbbd454126fd9de15
         txn 0285cbad1e4b184c " "
         user "user1.5"
         description "step 1.5"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieA'
        -     17: U        SHORT_BINSTRING 'CM15Z'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (f)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000001 33 sha1:70b0a88b7652b82b82539800484dc7788277f32a
        +extension ""
        +obj 0000000000000003 33 sha1:0adf3b787e6814b6cc073bd51a42c3f18615a674
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'f1.5'
        +     24: U    SHORT_BINSTRING 'b1.5'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -431,27 +264,15 @@ obj 0000000000000001 33 sha1:70b0a88b7652b82b82539800484dc7788277f32a
         txn 0285cbad22fc9699 " "
         user "user1.6"
         description "step 1.6"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieI'
        -     17: U        SHORT_BINSTRING 'AH816'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 33 sha1:e9018b0bc67c9de08becf1f1fe1a548ed263fb29
        +extension ""
        +obj 0000000000000001 33 sha1:4d811fcaaa707127f5f6f49dc368ffd2ebae1018
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd1.6'
        +     24: U    SHORT_BINSTRING 'f1.6'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -460,27 +281,15 @@ obj 0000000000000002 33 sha1:e9018b0bc67c9de08becf1f1fe1a548ed263fb29
         txn 0285cbad27ae14e6 " "
         user "user1.7"
         description "step 1.7"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieU'
        -     17: U        SHORT_BINSTRING 'BE3WH'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (c)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000007 33 sha1:0cd3f4b725517a5371429e2ef2f56ea54fe405fb
        +extension ""
        +obj 0000000000000004 33 sha1:4c3e1f41eebd1f56c0fef1f609d64e061a137f5a
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'c1.7'
        +     24: U    SHORT_BINSTRING 'd1.7'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -489,27 +298,77 @@ obj 0000000000000007 33 sha1:0cd3f4b725517a5371429e2ef2f56ea54fe405fb
         txn 0285cbad2c5f9333 " "
         user "user1.8"
         description "step 1.8"
        -extension
        +extension ""
        +obj 0000000000000000 213 sha1:8ccd62e915379b196be62bdb500c4019dfb7825f
               0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-generator'
        -     19: q        BINPUT     2
        -     21: U        SHORT_BINSTRING 'zodb/py2 (c)'
        -     35: U        SHORT_BINSTRING 'x-cookieW'
        -     46: U        SHORT_BINSTRING 'HPFAQ'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        +      2: c    GLOBAL     'persistent.mapping PersistentMapping'
        +     40: q    BINPUT     1
        +     42: .    STOP
        +  highest protocol among opcodes = 2
        +     43: \x80 PROTO      2
        +     45: }    EMPTY_DICT
        +     46: q    BINPUT     2
        +     48: U    SHORT_BINSTRING 'data'
        +     54: q    BINPUT     3
        +     56: }    EMPTY_DICT
        +     57: q    BINPUT     4
        +     59: (    MARK
        +     60: U        SHORT_BINSTRING 'a'
        +     63: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x08'
        +     73: q        BINPUT     5
        +     75: c        GLOBAL     '__main__ Object'
        +     92: q        BINPUT     6
        +     94: \x86     TUPLE2
        +     95: Q        BINPERSID
        +     96: U        SHORT_BINSTRING 'c'
        +     99: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
        +    109: q        BINPUT     7
        +    111: h        BINGET     6
        +    113: \x86     TUPLE2
        +    114: Q        BINPERSID
        +    115: U        SHORT_BINSTRING 'b'
        +    118: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x03'
        +    128: q        BINPUT     8
        +    130: h        BINGET     6
        +    132: \x86     TUPLE2
        +    133: Q        BINPERSID
        +    134: U        SHORT_BINSTRING 'e'
        +    137: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
        +    147: q        BINPUT     9
        +    149: h        BINGET     6
        +    151: \x86     TUPLE2
        +    152: Q        BINPERSID
        +    153: U        SHORT_BINSTRING 'd'
        +    156: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x04'
        +    166: q        BINPUT     10
        +    168: h        BINGET     6
        +    170: \x86     TUPLE2
        +    171: Q        BINPERSID
        +    172: U        SHORT_BINSTRING 'g'
        +    175: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x06'
        +    185: q        BINPUT     11
        +    187: h        BINGET     6
        +    189: \x86     TUPLE2
        +    190: Q        BINPERSID
        +    191: U        SHORT_BINSTRING 'f'
        +    194: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x01'
        +    204: q        BINPUT     12
        +    206: h        BINGET     6
        +    208: \x86     TUPLE2
        +    209: Q        BINPERSID
        +    210: u        SETITEMS   (MARK at 59)
        +    211: s    SETITEM
        +    212: .    STOP
           highest protocol among opcodes = 2
        -obj 0000000000000007 33 sha1:13e366fb1d15d36a62099e6b835638407718229f
        +
        +obj 0000000000000008 33 sha1:7cffb67651540355d8467852ec6cabcb48d964aa
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'c1.8'
        +     24: U    SHORT_BINSTRING 'a1.8'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -518,27 +377,15 @@ obj 0000000000000007 33 sha1:13e366fb1d15d36a62099e6b835638407718229f
         txn 0285cbad31111180 " "
         user "user1.9"
         description "step 1.9"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieQ'
        -     17: U        SHORT_BINSTRING 'DZM23'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 33 sha1:3ac37991a56061c7407cc093ee2a71eef4379131
        +extension ""
        +obj 0000000000000001 33 sha1:c32c4831eabc3a97810c4f925465c6093e4fb716
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e1.9'
        +     24: U    SHORT_BINSTRING 'f1.9'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -547,27 +394,15 @@ obj 0000000000000006 33 sha1:3ac37991a56061c7407cc093ee2a71eef4379131
         txn 0285cbad35c28fcc " "
         user "user1.10"
         description "step 1.10"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieO'
        -     17: U        SHORT_BINSTRING 'EIGHL'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (a)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000005 34 sha1:407cc5710a22f6c387df45aab613aa3673b221c6
        +extension ""
        +obj 0000000000000002 34 sha1:07fe4a745e127abf54f451d41fba5db7bd10ac9d
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'a1.10'
        +     24: U    SHORT_BINSTRING 'c1.10'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -576,27 +411,15 @@ obj 0000000000000005 34 sha1:407cc5710a22f6c387df45aab613aa3673b221c6
         txn 0285cbad3a740e19 " "
         user "user1.11"
         description "step 1.11"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie2'
        -     17: U        SHORT_BINSTRING 'Z9RFC'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (c)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000007 34 sha1:88ab1add11652101077535c03b04e83fe4ddb88b
        +extension ""
        +obj 0000000000000001 34 sha1:2f0fc397cd9bdceb59cfb7e40b823ae3a81e2f7c
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'c1.11'
        +     24: U    SHORT_BINSTRING 'f1.11'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -605,20 +428,8 @@ obj 0000000000000007 34 sha1:88ab1add11652101077535c03b04e83fe4ddb88b
         txn 0285cbad3f258c66 " "
         user "user1.12"
         description "step 1.12"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie7'
        -     17: U        SHORT_BINSTRING 'WGO4E'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:4808aef147f8ded08ffaae2ce04265506385e7f7
        +extension ""
        +obj 0000000000000007 34 sha1:4808aef147f8ded08ffaae2ce04265506385e7f7
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -634,27 +445,15 @@ obj 0000000000000006 34 sha1:4808aef147f8ded08ffaae2ce04265506385e7f7
         txn 0285cbad43d70ab3 " "
         user "user1.13"
         description "step 1.13"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie5'
        -     17: U        SHORT_BINSTRING '757DJ'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 34 sha1:a9f47880096587b359fa7ea6a0fd213e800a24a4
        +extension ""
        +obj 0000000000000008 34 sha1:656d65291d6e34225fe2c8213c2241b390e7487a
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g1.13'
        +     24: U    SHORT_BINSTRING 'a1.13'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -663,27 +462,15 @@ obj 0000000000000003 34 sha1:a9f47880096587b359fa7ea6a0fd213e800a24a4
         txn 0285cbad48888900 " "
         user "user1.14"
         description "step 1.14"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieX'
        -     17: U        SHORT_BINSTRING '5EOVH'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 34 sha1:e5b3820378e102a61be2b5998ded3182c106c7db
        +extension ""
        +obj 0000000000000004 34 sha1:87a243d2e9bdd70a84129119894b7d25479f4abc
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g1.14'
        +     24: U    SHORT_BINSTRING 'd1.14'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -692,27 +479,15 @@ obj 0000000000000003 34 sha1:e5b3820378e102a61be2b5998ded3182c106c7db
         txn 0285cbad4d3a074c " "
         user "user1.15"
         description "step 1.15"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieC'
        -     17: U        SHORT_BINSTRING 'HO7L7'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 34 sha1:f136bac1befa0fbd1ebd50218f8d9afe00b9b0a5
        +extension ""
        +obj 0000000000000006 34 sha1:2e9ebc331bf53c095e9573de64a9b31f2b340b2f
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd1.15'
        +     24: U    SHORT_BINSTRING 'g1.15'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -721,27 +496,15 @@ obj 0000000000000002 34 sha1:f136bac1befa0fbd1ebd50218f8d9afe00b9b0a5
         txn 0285cbad51eb8599 " "
         user "user1.16"
         description "step 1.16"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieU'
        -     17: U        SHORT_BINSTRING 'T159S'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 34 sha1:778621ce5c5e97b65343b1ab0cc1a3ce5702fbc8
        +extension ""
        +obj 0000000000000003 34 sha1:86adb5f06801883ba2be7776f68bd8ab46b34dd8
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g1.16'
        +     24: U    SHORT_BINSTRING 'b1.16'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -750,27 +513,15 @@ obj 0000000000000003 34 sha1:778621ce5c5e97b65343b1ab0cc1a3ce5702fbc8
         txn 0285cbad569d03e6 " "
         user "user1.17"
         description "step 1.17"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie8'
        -     17: U        SHORT_BINSTRING 'T23V1'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (f)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000001 34 sha1:eb6d2d192f3d8fe47a1b2e8119d390ed580c3fb4
        +extension ""
        +obj 0000000000000002 34 sha1:033ab1c2cfacb42e1db63ec9fac8427c700cc3cb
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'f1.17'
        +     24: U    SHORT_BINSTRING 'c1.17'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -779,27 +530,15 @@ obj 0000000000000001 34 sha1:eb6d2d192f3d8fe47a1b2e8119d390ed580c3fb4
         txn 0285cbad5b4e8233 " "
         user "user1.18"
         description "step 1.18"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieY'
        -     17: U        SHORT_BINSTRING 'UB55N'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (a)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000005 34 sha1:921682b323eb62f109d052bc1dfd4ffe0dbf79db
        +extension ""
        +obj 0000000000000006 34 sha1:11f0228fea479a8dacdda2351f2720d005c04b06
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'a1.18'
        +     24: U    SHORT_BINSTRING 'g1.18'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -808,27 +547,15 @@ obj 0000000000000005 34 sha1:921682b323eb62f109d052bc1dfd4ffe0dbf79db
         txn 0285cbad60000080 " "
         user "user1.19"
         description "step 1.19"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieZ'
        -     17: U        SHORT_BINSTRING 'IKOSR'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 34 sha1:b0b31eb0b48548119153628eb3c6711d959e9f9b
        +extension ""
        +obj 0000000000000003 34 sha1:6f5ef8a80a64540885791a6b1e2d1a352ee91d1a
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g1.19'
        +     24: U    SHORT_BINSTRING 'b1.19'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -837,27 +564,15 @@ obj 0000000000000003 34 sha1:b0b31eb0b48548119153628eb3c6711d959e9f9b
         txn 0285cbad64b17ecc " "
         user "user1.20"
         description "step 1.20"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieS'
        -     17: U        SHORT_BINSTRING '7JLTH'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000003 34 sha1:6bfd3298d0bea74cfa3d1f01bb722e958e3f1520
        +extension ""
        +obj 0000000000000004 34 sha1:1c032191dab251d941e739b3703f42ed7e43b246
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g1.20'
        +     24: U    SHORT_BINSTRING 'd1.20'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -866,27 +581,15 @@ obj 0000000000000003 34 sha1:6bfd3298d0bea74cfa3d1f01bb722e958e3f1520
         txn 0285cbad6962fd19 " "
         user "user1.21"
         description "step 1.21"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieI'
        -     17: U        SHORT_BINSTRING 'USN06'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:0d4b4837500e84b190ea2f92b16ab8ec0c486db5
        +extension ""
        +obj 0000000000000003 34 sha1:d90118a669a7a9dbe6b779bcc61110df0cc97fd1
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e1.21'
        +     24: U    SHORT_BINSTRING 'b1.21'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -895,27 +598,15 @@ obj 0000000000000006 34 sha1:0d4b4837500e84b190ea2f92b16ab8ec0c486db5
         txn 0285cbad6e147b66 " "
         user "user1.22"
         description "step 1.22"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie2'
        -     17: U        SHORT_BINSTRING 'UXAET'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (a)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000005 34 sha1:eacbd02d0d78eece9d784da7f3fd0b2738ca6ce0
        +extension ""
        +obj 0000000000000006 34 sha1:cd7d6434b0aa8290342b60c85d7378cda0d19734
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'a1.22'
        +     24: U    SHORT_BINSTRING 'g1.22'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -924,27 +615,15 @@ obj 0000000000000005 34 sha1:eacbd02d0d78eece9d784da7f3fd0b2738ca6ce0
         txn 0285cbad72c5f9b3 " "
         user "user1.23"
         description "step 1.23"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieH'
        -     17: U        SHORT_BINSTRING 'AT11F'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (a)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000005 34 sha1:1b443228d5a434ddd9616ecb5aa90672c0ce9ba2
        +extension ""
        +obj 0000000000000001 34 sha1:230c0adc97facea312cd09aeb825f9a6c953e029
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'a1.23'
        +     24: U    SHORT_BINSTRING 'f1.23'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -953,27 +632,15 @@ obj 0000000000000005 34 sha1:1b443228d5a434ddd9616ecb5aa90672c0ce9ba2
         txn 0285cbad77777800 " "
         user "user1.24"
         description "step 1.24"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieD'
        -     17: U        SHORT_BINSTRING 'O5ZEM'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (f)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000001 34 sha1:b35a1826cc6cb71b9ddff043f0e8f88b4d90281f
        +extension ""
        +obj 0000000000000004 34 sha1:ec728760e33cbafcd21496354cbe752995dc02c4
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'f1.24'
        +     24: U    SHORT_BINSTRING 'd1.24'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -982,63 +649,27 @@ obj 0000000000000001 34 sha1:b35a1826cc6cb71b9ddff043f0e8f88b4d90281f
         txn 0285cbad7c28f64c " "
         user "root1.0\nYour\nMagesty "
         description "undo 1.0\nmore detailed description\n\nzzz ...\t"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie3'
        -     17: U        SHORT_BINSTRING 'G51MM'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (undo AoXLrXLF+bM=)'
        -     69: u        SETITEMS   (MARK at 5)
        -     70: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000005 from 0285cbad6e147b66
        +extension ""
        +obj 0000000000000001 from 0285cbad3a740e19
    
         txn 0285cbad80da7499 " "
         user "root1.1\nYour\nMagesty "
         description "undo 1.1\nmore detailed description\n\nzzz ...\t\t"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieL'
        -     17: U        SHORT_BINSTRING 'CDRHV'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (undo AoXLrXd3eAA=)'
        -     69: u        SETITEMS   (MARK at 5)
        -     70: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000001 from 0285cbad569d03e6
        +extension ""
        +obj 0000000000000004 from 0285cbad64b17ecc
    
         txn 0285cbad858bf2e6 " "
         user "user"
         description "cyclic reference"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie4'
        -     17: U        SHORT_BINSTRING 'C4OMS'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (cycle)'
        -     57: u        SETITEMS   (MARK at 5)
        -     58: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 41 sha1:1e2e3ac81badec749c2082a08d205c06c6bb5119
        +extension ""
        +obj 0000000000000008 41 sha1:ecd78bff79e5e10c04d6a14c8277d3fd5baba3a2
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
        +     24: U    SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x08'
              34: q    BINPUT     2
              36: h    BINGET     1
              38: \x86 TUPLE2
        @@ -1051,7 +682,7 @@ txn 0285cbad8a3d7133 " "
         user ""
         description "predelete 3"
         extension ""
        -obj 0000000000000000 213 sha1:e278899979bad10d72962170790ea2a2f5865567
        +obj 0000000000000000 213 sha1:e8e6e66cf82c7cbff72efb7bed28826296e51a01
               0: \x80 PROTO      2
               2: c    GLOBAL     'persistent.mapping PersistentMapping'
              40: q    BINPUT     1
        @@ -1066,38 +697,38 @@ obj 0000000000000000 213 sha1:e278899979bad10d72962170790ea2a2f5865567
              57: q    BINPUT     4
              59: (    MARK
              60: U        SHORT_BINSTRING 'a'
        -     63: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x05'
        +     63: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x08'
              73: q        BINPUT     5
              75: c        GLOBAL     '__main__ Object'
              92: q        BINPUT     6
              94: \x86     TUPLE2
              95: Q        BINPERSID
              96: U        SHORT_BINSTRING 'c'
        -     99: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
        +     99: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
             109: q        BINPUT     7
             111: h        BINGET     6
             113: \x86     TUPLE2
             114: Q        BINPERSID
             115: U        SHORT_BINSTRING 'b'
        -    118: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x08'
        +    118: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\t'
             128: q        BINPUT     8
             130: h        BINGET     6
             132: \x86     TUPLE2
             133: Q        BINPERSID
             134: U        SHORT_BINSTRING 'e'
        -    137: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x06'
        +    137: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
             147: q        BINPUT     9
             149: h        BINGET     6
             151: \x86     TUPLE2
             152: Q        BINPERSID
             153: U        SHORT_BINSTRING 'd'
        -    156: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
        +    156: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x04'
             166: q        BINPUT     10
             168: h        BINGET     6
             170: \x86     TUPLE2
             171: Q        BINPERSID
             172: U        SHORT_BINSTRING 'g'
        -    175: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\t'
        +    175: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x06'
             185: q        BINPUT     11
             187: h        BINGET     6
             189: \x86     TUPLE2
        @@ -1113,14 +744,14 @@ obj 0000000000000000 213 sha1:e278899979bad10d72962170790ea2a2f5865567
             212: .    STOP
           highest protocol among opcodes = 2
    
        -obj 0000000000000009 32 sha1:38aaea7061f311a5ff41e144ea56df2c8f66435c
        +obj 0000000000000009 32 sha1:94f4c80027cdf77affb7dd9f26b634975b4619e4
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g1*'
        +     24: U    SHORT_BINSTRING 'b1*'
              29: q    BINPUT     2
              31: .    STOP
           highest protocol among opcodes = 2
        @@ -1129,45 +760,21 @@ obj 0000000000000009 32 sha1:38aaea7061f311a5ff41e144ea56df2c8f66435c
         txn 0285cbad8eeeef80 " "
         user "root1\nYour\nRoyal\nMagesty' \x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
         description "delete 1\nalpha beta gamma'delta\"lambda\n\nqqq ..."
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieS'
        -     17: U        SHORT_BINSTRING 'XVOTI'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (delete 3)'
        -     60: u        SETITEMS   (MARK at 5)
        -     61: .    STOP
        -  highest protocol among opcodes = 2
        +extension ""
         obj 0000000000000003 delete
    
         txn 0285cbadcbf25966 " "
         user "user2.0"
         description "step 2.0"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie1'
        -     17: U        SHORT_BINSTRING 'GRGS2'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (f)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000001 33 sha1:7b5599bdbf192e2d33e2597b52c8a72a751ddd13
        +extension ""
        +obj 0000000000000004 33 sha1:aff1248f33b29d65fe0b038d7dc11db007e2690d
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'f2.0'
        +     24: U    SHORT_BINSTRING 'd2.0'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1176,27 +783,15 @@ obj 0000000000000001 33 sha1:7b5599bdbf192e2d33e2597b52c8a72a751ddd13
         txn 0285cbadd0a3d7b3 " "
         user "user2.1"
         description "step 2.1"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie3'
        -     17: U        SHORT_BINSTRING 'WYNK7'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 33 sha1:50b0cf792f2fdc3fbfc5f47f148784924350e31c
        +extension ""
        +obj 0000000000000006 33 sha1:2a2f21f6f3480aef6afd1398bec7f6bffa43109c
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd2.1'
        +     24: U    SHORT_BINSTRING 'g2.1'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1205,27 +800,15 @@ obj 0000000000000002 33 sha1:50b0cf792f2fdc3fbfc5f47f148784924350e31c
         txn 0285cbadd5555600 " "
         user "user2.2"
         description "step 2.2"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieF'
        -     17: U        SHORT_BINSTRING 'SPFA4'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000009 33 sha1:71f1255a9751e0f223f079552e182cf26b27c0a6
        +extension ""
        +obj 0000000000000008 33 sha1:07e79c0eb72eea524bbfbce530b0671a4f90f483
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g2.2'
        +     24: U    SHORT_BINSTRING 'a2.2'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1234,27 +817,15 @@ obj 0000000000000009 33 sha1:71f1255a9751e0f223f079552e182cf26b27c0a6
         txn 0285cbadda06d44c " "
         user "user2.3"
         description "step 2.3"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie1'
        -     17: U        SHORT_BINSTRING 'XE3RQ'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000009 33 sha1:e6236b8f0a4a2201c0c2375a8f360905108eff2d
        +extension ""
        +obj 0000000000000004 33 sha1:9985268077ca849a615e15ed1b37634875749695
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g2.3'
        +     24: U    SHORT_BINSTRING 'd2.3'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1263,20 +834,8 @@ obj 0000000000000009 33 sha1:e6236b8f0a4a2201c0c2375a8f360905108eff2d
         txn 0285cbaddeb85299 " "
         user "user2.4"
         description "step 2.4"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie2'
        -     17: U        SHORT_BINSTRING '1XYQ2'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 33 sha1:55a37439e3dc66552d680833af332b8be83bfc2a
        +extension ""
        +obj 0000000000000007 33 sha1:55a37439e3dc66552d680833af332b8be83bfc2a
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -1292,27 +851,15 @@ obj 0000000000000006 33 sha1:55a37439e3dc66552d680833af332b8be83bfc2a
         txn 0285cbade369d0e6 " "
         user "user2.5"
         description "step 2.5"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieW'
        -     17: U        SHORT_BINSTRING 'C0ZT2'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (a)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000005 33 sha1:6beb5d1ca083744ff1e8a13c0bee70c2df54a05c
        +extension ""
        +obj 0000000000000004 33 sha1:2e472bec634f703fc24e5192114b0c61364d9273
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'a2.5'
        +     24: U    SHORT_BINSTRING 'd2.5'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1321,27 +868,15 @@ obj 0000000000000005 33 sha1:6beb5d1ca083744ff1e8a13c0bee70c2df54a05c
         txn 0285cbade81b4f33 " "
         user "user2.6"
         description "step 2.6"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie0'
        -     17: U        SHORT_BINSTRING 'OX40D'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (b)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000008 33 sha1:2a3221e27ac8fbf15ab75b38a9a65e727d237355
        +extension ""
        +obj 0000000000000001 33 sha1:e0148787fb3ffe52ef3ba85ad82b6b8afa47e20f
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'b2.6'
        +     24: U    SHORT_BINSTRING 'f2.6'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1350,27 +885,15 @@ obj 0000000000000008 33 sha1:2a3221e27ac8fbf15ab75b38a9a65e727d237355
         txn 0285cbadeccccd80 " "
         user "user2.7"
         description "step 2.7"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieY'
        -     17: U        SHORT_BINSTRING '64CY4'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000009 33 sha1:408fddc8c7255c5e2ed94c239ac57c211ab94b6d
        +extension ""
        +obj 0000000000000004 33 sha1:9472357211e402a8dfcda8b72f7ef98c2b8d8b20
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g2.7'
        +     24: U    SHORT_BINSTRING 'd2.7'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1379,27 +902,15 @@ obj 0000000000000009 33 sha1:408fddc8c7255c5e2ed94c239ac57c211ab94b6d
         txn 0285cbadf17e4bcc " "
         user "user2.8"
         description "step 2.8"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieZ'
        -     17: U        SHORT_BINSTRING 'AXYM6'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 33 sha1:72eda0cdae0addbec9472e28b5a9a91ecdf41bbf
        +extension ""
        +obj 0000000000000006 33 sha1:d57709ac596de41959e36e1dd6902a853213267e
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd2.8'
        +     24: U    SHORT_BINSTRING 'g2.8'
              30: q    BINPUT     2
              32: .    STOP
           highest protocol among opcodes = 2
        @@ -1408,20 +919,8 @@ obj 0000000000000002 33 sha1:72eda0cdae0addbec9472e28b5a9a91ecdf41bbf
         txn 0285cbadf62fca19 " "
         user "user2.9"
         description "step 2.9"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie8'
        -     17: U        SHORT_BINSTRING '5WYSB'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 33 sha1:f1d87ba386f57291ecc925020a05df06caedb278
        +extension ""
        +obj 0000000000000007 33 sha1:f1d87ba386f57291ecc925020a05df06caedb278
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -1437,27 +936,15 @@ obj 0000000000000006 33 sha1:f1d87ba386f57291ecc925020a05df06caedb278
         txn 0285cbadfae14866 " "
         user "user2.10"
         description "step 2.10"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie2'
        -     17: U        SHORT_BINSTRING 'F1402'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (c)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000007 34 sha1:6696fa0434fadb645687c74c8561f0f55fce1fd6
        +extension ""
        +obj 0000000000000007 34 sha1:5118b5ada1ab6ce6852eef392212ea9300ac6f06
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'c2.10'
        +     24: U    SHORT_BINSTRING 'e2.10'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1466,20 +953,8 @@ obj 0000000000000007 34 sha1:6696fa0434fadb645687c74c8561f0f55fce1fd6
         txn 0285cbadff92c6b3 " "
         user "user2.11"
         description "step 2.11"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieG'
        -     17: U        SHORT_BINSTRING 'Q5FM3'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 34 sha1:14e8b27b3bc8bf5b4d86ca162cc1c912a29a1c05
        +extension ""
        +obj 0000000000000004 34 sha1:14e8b27b3bc8bf5b4d86ca162cc1c912a29a1c05
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -1495,27 +970,15 @@ obj 0000000000000002 34 sha1:14e8b27b3bc8bf5b4d86ca162cc1c912a29a1c05
         txn 0285cbae04444500 " "
         user "user2.12"
         description "step 2.12"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie7'
        -     17: U        SHORT_BINSTRING '2EFQB'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (g)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000009 34 sha1:db269b90a0df33aa7d411c672f93fb7d86bbdb87
        +extension ""
        +obj 0000000000000007 34 sha1:60c6854b7737f5bbc7569c8b6a694910ed370ccc
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'g2.12'
        +     24: U    SHORT_BINSTRING 'e2.12'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1524,27 +987,15 @@ obj 0000000000000009 34 sha1:db269b90a0df33aa7d411c672f93fb7d86bbdb87
         txn 0285cbae08f5c34c " "
         user "user2.13"
         description "step 2.13"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieS'
        -     17: U        SHORT_BINSTRING 'YS9KO'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 34 sha1:4b28f9e97ff4f61f3dfba30b9f7aceb4913215ce
        +extension ""
        +obj 0000000000000002 34 sha1:5d89801d288c5238f605784e7c71b2d61598d362
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd2.13'
        +     24: U    SHORT_BINSTRING 'c2.13'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1553,27 +1004,15 @@ obj 0000000000000002 34 sha1:4b28f9e97ff4f61f3dfba30b9f7aceb4913215ce
         txn 0285cbae0da74199 " "
         user "user2.14"
         description "step 2.14"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie5'
        -     17: U        SHORT_BINSTRING 'RF8GX'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (c)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000007 34 sha1:c3eabecf360015b4b7555abc3a0dc0cea77fe7ed
        +extension ""
        +obj 0000000000000007 34 sha1:0a27d685d77313b1a2b7c3478888a98798847077
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'c2.14'
        +     24: U    SHORT_BINSTRING 'e2.14'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1582,27 +1021,15 @@ obj 0000000000000007 34 sha1:c3eabecf360015b4b7555abc3a0dc0cea77fe7ed
         txn 0285cbae1258bfe6 " "
         user "user2.15"
         description "step 2.15"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie0'
        -     17: U        SHORT_BINSTRING 'H70PM'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:25ffaeb6090581d72bce075a765d3cf4198af90f
        +extension ""
        +obj 0000000000000002 34 sha1:ae3975f91e13b4ec60e6810006be027149642926
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e2.15'
        +     24: U    SHORT_BINSTRING 'c2.15'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1611,27 +1038,15 @@ obj 0000000000000006 34 sha1:25ffaeb6090581d72bce075a765d3cf4198af90f
         txn 0285cbae170a3e33 " "
         user "user2.16"
         description "step 2.16"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-generator'
        -     19: q        BINPUT     2
        -     21: U        SHORT_BINSTRING 'zodb/py2 (f)'
        -     35: U        SHORT_BINSTRING 'x-cookieO'
        -     46: U        SHORT_BINSTRING 'MJ5PG'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000001 34 sha1:e934438dede49d14ee2d1d2afa8fa18774547764
        +extension ""
        +obj 0000000000000009 34 sha1:0f253572ebd02bdd419b287ac75113bc8213ef83
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'f2.16'
        +     24: U    SHORT_BINSTRING 'b2.16'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1640,20 +1055,8 @@ obj 0000000000000001 34 sha1:e934438dede49d14ee2d1d2afa8fa18774547764
         txn 0285cbae1bbbbc80 " "
         user "user2.17"
         description "step 2.17"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie1'
        -     17: U        SHORT_BINSTRING 'RAZ4V'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (b)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000008 34 sha1:9961f82b3f01204f80efbb3b62a2b98d9d3202fa
        +extension ""
        +obj 0000000000000009 34 sha1:9961f82b3f01204f80efbb3b62a2b98d9d3202fa
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -1669,27 +1072,15 @@ obj 0000000000000008 34 sha1:9961f82b3f01204f80efbb3b62a2b98d9d3202fa
         txn 0285cbae206d3acc " "
         user "user2.18"
         description "step 2.18"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieR'
        -     17: U        SHORT_BINSTRING 'KE39A'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 34 sha1:5294513e1e00c7de532f4f90068b2147bf87f673
        +extension ""
        +obj 0000000000000007 34 sha1:00cce52a596916011d8935c4e53dcb04510af2d9
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd2.18'
        +     24: U    SHORT_BINSTRING 'e2.18'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1698,20 +1089,8 @@ obj 0000000000000002 34 sha1:5294513e1e00c7de532f4f90068b2147bf87f673
         txn 0285cbae251eb919 " "
         user "user2.19"
         description "step 2.19"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie8'
        -     17: U        SHORT_BINSTRING '1SBCJ'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:523ec17c6d74016e3464d52bb7c7b7baa4b82a20
        +extension ""
        +obj 0000000000000007 34 sha1:523ec17c6d74016e3464d52bb7c7b7baa4b82a20
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
        @@ -1727,27 +1106,15 @@ obj 0000000000000006 34 sha1:523ec17c6d74016e3464d52bb7c7b7baa4b82a20
         txn 0285cbae29d03766 " "
         user "user2.20"
         description "step 2.20"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieJ'
        -     17: U        SHORT_BINSTRING 'EAIKM'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (b)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000008 34 sha1:14b17f0e944432782cb270205b2e96948d112619
        +extension ""
        +obj 0000000000000004 34 sha1:9cf3a2031b4e9af93e7fd40e58dbceedc753b7d6
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'b2.20'
        +     24: U    SHORT_BINSTRING 'd2.20'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1756,27 +1123,15 @@ obj 0000000000000008 34 sha1:14b17f0e944432782cb270205b2e96948d112619
         txn 0285cbae2e81b5b3 " "
         user "user2.21"
         description "step 2.21"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieM'
        -     17: U        SHORT_BINSTRING 'ESSAD'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:27744ea516240e0d00be75f26af9698f842bdda5
        +extension ""
        +obj 0000000000000008 34 sha1:330a069412b6cfb00a43da001b600b7f6b2380e6
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e2.21'
        +     24: U    SHORT_BINSTRING 'a2.21'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1785,27 +1140,15 @@ obj 0000000000000006 34 sha1:27744ea516240e0d00be75f26af9698f842bdda5
         txn 0285cbae33333400 " "
         user "user2.22"
         description "step 2.22"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieH'
        -     17: U        SHORT_BINSTRING 'DL5OC'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:a3f303ddd4f2fb9369f6fbbb38ae8030f7f8188d
        +extension ""
        +obj 0000000000000001 34 sha1:bf2d0d8f4cd81e1592001eb3c265a22894cdb51b
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e2.22'
        +     24: U    SHORT_BINSTRING 'f2.22'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1814,27 +1157,15 @@ obj 0000000000000006 34 sha1:a3f303ddd4f2fb9369f6fbbb38ae8030f7f8188d
         txn 0285cbae37e4b24c " "
         user "user2.23"
         description "step 2.23"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieQ'
        -     17: U        SHORT_BINSTRING 'PBN2A'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (d)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 34 sha1:343bed4b31f4fe69a92ee51d28fd7b9cfd6ecb8b
        +extension ""
        +obj 0000000000000006 34 sha1:c47e0f1415e14f41016809ac3a4323745ad79170
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'd2.23'
        +     24: U    SHORT_BINSTRING 'g2.23'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
        @@ -1843,84 +1174,36 @@ obj 0000000000000002 34 sha1:343bed4b31f4fe69a92ee51d28fd7b9cfd6ecb8b
         txn 0285cbae3c963099 " "
         user "user2.24"
         description "step 2.24"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookie2'
        -     17: U        SHORT_BINSTRING '0GV0I'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (e)'
        -     53: u        SETITEMS   (MARK at 5)
        -     54: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 34 sha1:8804c60dc27b2e2f6908e2a099a5c5d4b5abc843
        +extension ""
        +obj 0000000000000006 34 sha1:2030a0ccc56595b70aac033e70c899060dbfb0f9
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e2.24'
        +     24: U    SHORT_BINSTRING 'g2.24'
              31: q    BINPUT     2
              33: .    STOP
           highest protocol among opcodes = 2
    
        -txn 0285cbae4147aee6 " "
        +txn 0285cbae45f92d33 " "
         user "root2.0\nYour\nMagesty "
         description "undo 2.0\nmore detailed description\n\nzzz ...\t\t"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieM'
        -     17: U        SHORT_BINSTRING 'OQO01'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (undo AoXLrjfkskw=)'
        -     69: u        SETITEMS   (MARK at 5)
        -     70: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000002 from 0285cbae206d3acc
        +extension ""
        +obj 0000000000000001 from 0285cbade81b4f33
    
        -txn 0285cbae45f92d33 " "
        +txn 0285cbae4aaaab80 " "
         user "root2.1\nYour\nMagesty "
         description "undo 2.1\nmore detailed description\n\nzzz ...\t\t\t"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieA'
        -     17: U        SHORT_BINSTRING 'VPQ8R'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (undo AoXLrjyWMJk=)'
        -     69: u        SETITEMS   (MARK at 5)
        -     70: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 from 0285cbae33333400
        +extension ""
        +obj 0000000000000006 from 0285cbae37e4b24c
    
        -txn 0285cbae4aaaab80 " "
        +txn 0285cbae4f5c29cc " "
         user "user"
         description "cyclic reference"
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-generator'
        -     19: q        BINPUT     2
        -     21: U        SHORT_BINSTRING 'zodb/py2 (cycle)'
        -     39: U        SHORT_BINSTRING 'x-cookieG'
        -     50: U        SHORT_BINSTRING 'B6FWF'
        -     57: u        SETITEMS   (MARK at 5)
        -     58: .    STOP
        -  highest protocol among opcodes = 2
        +extension ""
         obj 0000000000000006 41 sha1:863d327e4b795efff7dff75bb73c0d20ea3981aa
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
        @@ -1937,11 +1220,11 @@ obj 0000000000000006 41 sha1:863d327e4b795efff7dff75bb73c0d20ea3981aa
           highest protocol among opcodes = 2
    
        -txn 0285cbae4f5c29cc " "
        +txn 0285cbae540da819 " "
         user ""
        -description "predelete 6"
        +description "predelete 1"
         extension ""
        -obj 0000000000000000 213 sha1:b44d53e1b6cc465c4ab3ba2a3384a80fbba4eb8a
        +obj 0000000000000000 213 sha1:ae6936a4e7c9f3f748d8ecf28186e259897651dd
               0: \x80 PROTO      2
               2: c    GLOBAL     'persistent.mapping PersistentMapping'
              40: q    BINPUT     1
        @@ -1956,44 +1239,44 @@ obj 0000000000000000 213 sha1:b44d53e1b6cc465c4ab3ba2a3384a80fbba4eb8a
              57: q    BINPUT     4
              59: (    MARK
              60: U        SHORT_BINSTRING 'a'
        -     63: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x05'
        +     63: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x08'
              73: q        BINPUT     5
              75: c        GLOBAL     '__main__ Object'
              92: q        BINPUT     6
              94: \x86     TUPLE2
              95: Q        BINPERSID
              96: U        SHORT_BINSTRING 'c'
        -     99: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
        +     99: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
             109: q        BINPUT     7
             111: h        BINGET     6
             113: \x86     TUPLE2
             114: Q        BINPERSID
             115: U        SHORT_BINSTRING 'b'
        -    118: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x08'
        +    118: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\t'
             128: q        BINPUT     8
             130: h        BINGET     6
             132: \x86     TUPLE2
             133: Q        BINPERSID
             134: U        SHORT_BINSTRING 'e'
        -    137: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\n'
        +    137: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x07'
             147: q        BINPUT     9
             149: h        BINGET     6
             151: \x86     TUPLE2
             152: Q        BINPERSID
             153: U        SHORT_BINSTRING 'd'
        -    156: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x02'
        +    156: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x04'
             166: q        BINPUT     10
             168: h        BINGET     6
             170: \x86     TUPLE2
             171: Q        BINPERSID
             172: U        SHORT_BINSTRING 'g'
        -    175: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\t'
        +    175: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x06'
             185: q        BINPUT     11
             187: h        BINGET     6
             189: \x86     TUPLE2
             190: Q        BINPERSID
             191: U        SHORT_BINSTRING 'f'
        -    194: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\x01'
        +    194: U        SHORT_BINSTRING '\x00\x00\x00\x00\x00\x00\x00\n'
             204: q        BINPUT     12
             206: h        BINGET     6
             208: \x86     TUPLE2
        @@ -2003,34 +1286,22 @@ obj 0000000000000000 213 sha1:b44d53e1b6cc465c4ab3ba2a3384a80fbba4eb8a
             212: .    STOP
           highest protocol among opcodes = 2
    
        -obj 000000000000000a 32 sha1:35a18f6ce20260014618957689b770b74d7b3c78
        +obj 000000000000000a 32 sha1:da5c7f574b5e6a64d0d58314a6939ef761266d41
               0: \x80 PROTO      2
               2: c    GLOBAL     '__main__ Object'
              19: q    BINPUT     1
              21: .    STOP
           highest protocol among opcodes = 2
              22: \x80 PROTO      2
        -     24: U    SHORT_BINSTRING 'e2*'
        +     24: U    SHORT_BINSTRING 'f2*'
              29: q    BINPUT     2
              31: .    STOP
           highest protocol among opcodes = 2
    
        -txn 0285cbae540da819 " "
        +txn 0285cbae58bf2666 " "
         user "root2\nYour\nRoyal\nMagesty' \x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
         description "delete 2\nalpha beta gamma'delta\"lambda\n\nqqq ..."
        -extension
        -      0: \x80 PROTO      2
        -      2: }    EMPTY_DICT
        -      3: q    BINPUT     1
        -      5: (    MARK
        -      6: U        SHORT_BINSTRING 'x-cookieT'
        -     17: U        SHORT_BINSTRING '4WFSD'
        -     24: U        SHORT_BINSTRING 'x-generator'
        -     37: q        BINPUT     2
        -     39: U        SHORT_BINSTRING 'zodb/py2 (delete 6)'
        -     60: u        SETITEMS   (MARK at 5)
        -     61: .    STOP
        -  highest protocol among opcodes = 2
        -obj 0000000000000006 delete
        +extension ""
        +obj 0000000000000001 delete
    395d8c27