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Function to test discovery between two repos in both directions, using both the local shortcut
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(which is currently not activated by default) and the full remotable protocol:
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$ testdesc() { # revs_a, revs_b, dagdesc
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> if [ -d foo ]; then rm -rf foo; fi
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> hg init foo
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> cd foo
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> hg debugbuilddag "$3"
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> hg clone . a $1 --quiet
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> hg clone . b $2 --quiet
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> echo
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> echo "% -- a -> b tree"
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> hg -R a debugdiscovery b --verbose --old
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> echo
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> echo "% -- a -> b set"
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> hg -R a debugdiscovery b --verbose --debug
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> echo
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> echo "% -- b -> a tree"
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> hg -R b debugdiscovery a --verbose --old
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> echo
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> echo "% -- b -> a set"
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> hg -R b debugdiscovery a --verbose --debug
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> cd ..
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> }
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Small superset:
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$ testdesc '-ra1 -ra2' '-rb1 -rb2 -rb3' '
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> +2:f +1:a1:b1
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> <f +4 :a2
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> +5 :b2
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> <f +3 :b3'
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% -- a -> b tree
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comparing with b
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searching for changes
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unpruned common: b5714e113bc0 66f7d451a68b 01241442b3c2
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common heads: b5714e113bc0 01241442b3c2
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local is subset
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% -- a -> b set
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comparing with b
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query 1; heads
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searching for changes
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all local heads known remotely
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common heads: b5714e113bc0 01241442b3c2
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local is subset
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% -- b -> a tree
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comparing with a
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searching for changes
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unpruned common: b5714e113bc0 01241442b3c2
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common heads: b5714e113bc0 01241442b3c2
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remote is subset
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% -- b -> a set
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comparing with a
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query 1; heads
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searching for changes
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all remote heads known locally
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common heads: b5714e113bc0 01241442b3c2
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remote is subset
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Many new:
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$ testdesc '-ra1 -ra2' '-rb' '
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> +2:f +3:a1 +3:b
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> <f +30 :a2'
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% -- a -> b tree
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comparing with b
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searching for changes
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unpruned common: bebd167eb94d
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common heads: bebd167eb94d
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% -- a -> b set
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comparing with b
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query 1; heads
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searching for changes
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taking initial sample
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searching: 2 queries
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query 2; still undecided: 29, sample size is: 29
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2 total queries
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common heads: bebd167eb94d
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% -- b -> a tree
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comparing with a
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searching for changes
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unpruned common: bebd167eb94d 66f7d451a68b
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common heads: bebd167eb94d
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% -- b -> a set
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comparing with a
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query 1; heads
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searching for changes
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taking initial sample
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searching: 2 queries
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query 2; still undecided: 2, sample size is: 2
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2 total queries
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common heads: bebd167eb94d
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Both sides many new with stub:
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$ testdesc '-ra1 -ra2' '-rb' '
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> +2:f +2:a1 +30 :b
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> <f +30 :a2'
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% -- a -> b tree
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comparing with b
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searching for changes
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unpruned common: 2dc09a01254d
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common heads: 2dc09a01254d
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% -- a -> b set
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comparing with b
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query 1; heads
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searching for changes
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taking initial sample
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searching: 2 queries
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query 2; still undecided: 29, sample size is: 29
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2 total queries
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common heads: 2dc09a01254d
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% -- b -> a tree
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comparing with a
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searching for changes
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unpruned common: 66f7d451a68b 2dc09a01254d
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common heads: 2dc09a01254d
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% -- b -> a set
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comparing with a
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query 1; heads
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searching for changes
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taking initial sample
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searching: 2 queries
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query 2; still undecided: 29, sample size is: 29
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2 total queries
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common heads: 2dc09a01254d
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Both many new:
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$ testdesc '-ra' '-rb' '
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> +2:f +30 :b
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> <f +30 :a'
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% -- a -> b tree
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comparing with b
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searching for changes
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unpruned common: 66f7d451a68b
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common heads: 66f7d451a68b
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% -- a -> b set
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comparing with b
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query 1; heads
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searching for changes
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taking quick initial sample
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searching: 2 queries
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query 2; still undecided: 31, sample size is: 31
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2 total queries
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common heads: 66f7d451a68b
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% -- b -> a tree
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comparing with a
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searching for changes
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unpruned common: 66f7d451a68b
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common heads: 66f7d451a68b
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% -- b -> a set
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comparing with a
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query 1; heads
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searching for changes
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taking quick initial sample
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searching: 2 queries
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query 2; still undecided: 31, sample size is: 31
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2 total queries
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common heads: 66f7d451a68b
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Both many new skewed:
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$ testdesc '-ra' '-rb' '
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> +2:f +30 :b
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> <f +50 :a'
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% -- a -> b tree
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comparing with b
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searching for changes
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unpruned common: 66f7d451a68b
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common heads: 66f7d451a68b
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% -- a -> b set
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comparing with b
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query 1; heads
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searching for changes
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taking quick initial sample
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searching: 2 queries
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query 2; still undecided: 51, sample size is: 51
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2 total queries
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common heads: 66f7d451a68b
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% -- b -> a tree
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comparing with a
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searching for changes
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unpruned common: 66f7d451a68b
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common heads: 66f7d451a68b
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% -- b -> a set
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comparing with a
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query 1; heads
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searching for changes
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taking quick initial sample
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searching: 2 queries
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query 2; still undecided: 31, sample size is: 31
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2 total queries
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common heads: 66f7d451a68b
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Both many new on top of long history:
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$ testdesc '-ra' '-rb' '
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> +1000:f +30 :b
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> <f +50 :a'
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% -- a -> b tree
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comparing with b
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searching for changes
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unpruned common: 7ead0cba2838
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common heads: 7ead0cba2838
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% -- a -> b set
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comparing with b
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query 1; heads
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searching for changes
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taking quick initial sample
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searching: 2 queries
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query 2; still undecided: 1049, sample size is: 11
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sampling from both directions
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searching: 3 queries
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query 3; still undecided: 31, sample size is: 31
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3 total queries
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common heads: 7ead0cba2838
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% -- b -> a tree
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comparing with a
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searching for changes
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unpruned common: 7ead0cba2838
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common heads: 7ead0cba2838
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% -- b -> a set
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comparing with a
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query 1; heads
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searching for changes
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taking quick initial sample
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searching: 2 queries
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query 2; still undecided: 1029, sample size is: 11
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sampling from both directions
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searching: 3 queries
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query 3; still undecided: 15, sample size is: 15
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3 total queries
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common heads: 7ead0cba2838
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One with >200 heads, which used to use up all of the sample:
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$ hg init manyheads
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$ cd manyheads
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$ echo "+300:r @a" >dagdesc
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads
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$ echo "@b *r+3" >>dagdesc # one more head
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$ hg debugbuilddag <dagdesc
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reading DAG from stdin
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$ hg heads -t --template . | wc -c
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\s*261 (re)
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$ hg clone -b a . a
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adding changesets
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adding manifests
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adding file changes
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added 1340 changesets with 0 changes to 0 files (+259 heads)
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updating to branch a
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0 files updated, 0 files merged, 0 files removed, 0 files unresolved
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$ hg clone -b b . b
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adding changesets
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adding manifests
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adding file changes
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added 304 changesets with 0 changes to 0 files
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updating to branch b
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0 files updated, 0 files merged, 0 files removed, 0 files unresolved
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$ hg -R a debugdiscovery b --debug --verbose
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comparing with b
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query 1; heads
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searching for changes
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taking quick initial sample
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searching: 2 queries
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query 2; still undecided: 1080, sample size is: 260
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sampling from both directions
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searching: 3 queries
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query 3; still undecided: 820, sample size is: 260
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sampling from both directions
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searching: 4 queries
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query 4; still undecided: 560, sample size is: 260
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sampling from both directions
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searching: 5 queries
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query 5; still undecided: 300, sample size is: 200
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5 total queries
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common heads: 3ee37d65064a
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$ cd ..
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