obsolete: explicitly track folds inside the markers
We now record information to be able to recognize "fold" event from
obsolescence markers. To do so, we track the following pieces of information:
a) a fold ID. Unique to that fold (per successor),
b) the number of predecessors,
c) the index of the predecessor in that fold.
We will now be able to create an algorithm able to find "predecessorssets".
We now store this data in the generic "metadata" field of the markers.
Updating the format to have a more compact storage for this would be useful.
This way of tracking a fold through multiple markers could be applied to split
too. This would have two advantages:
1) We get a simpler format, since number of successors is limited to [0-1].
2) We can better deal with situations where only some of the split successors
are pushed to a remote repository.
We should look into the relevance of such a change before updating the on-disk
format.
note: unlike splits, folds do not have to deal with cases where only some of
the markers have been synchronized. As they all share the same successor
changesets, they are all relevant to the same nodes.
$ hg init a
$ cd a
$ cp "$TESTDIR/binfile.bin" .
$ hg add binfile.bin
$ hg ci -m 'add binfile.bin'
$ echo >> binfile.bin
$ hg ci -m 'change binfile.bin'
$ hg revert -r 0 binfile.bin
$ hg ci -m 'revert binfile.bin'
$ hg cp binfile.bin nonbinfile
$ echo text > nonbinfile
$ hg ci -m 'make non-binary copy of binary file'
$ hg diff --nodates -r 0 -r 1
diff -r 48b371597640 -r acea2ab458c8 binfile.bin
Binary file binfile.bin has changed
$ hg diff --nodates -r 0 -r 2
$ hg diff --git -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356
GIT binary patch
literal 594
zc$@)J0<HatP)<h;3K|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU
z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd
zX$nnYLt$-$V!?uy+1V%`z&Eh=ah|duER<4|QWhju3gb^nF*8iYobxWG-qqXl=2~5M
z*IoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsH*yYzpvLT
zLdY<T=ks|woh-`&01!ej#(xbV1f|pI*=%;d-%F*E*X#ZH`4I%6SS+$EJDE&ct=8po
ziN#{?_j|kD%Cd|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^|Fn^Y?Gdc6<;
zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V
z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W-
zaR2~ECX?B2w+zELozC0s*6Z~|QG^f{3I#<`?)Q7U-JZ|q5W;9Q8i_=pBuSzunx=U;
z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K
zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#=
gQItJW-{SoTm)8|5##k|m00000NkvXXu0mjf3JwksH2?qr
$ hg diff --git -r 0 -r 2
$ hg diff --config diff.nobinary=True --git -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
Binary file binfile.bin has changed
$ HGPLAIN=1 hg diff --config diff.nobinary=True --git -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..58dc31a9e2f40f74ff3b45903f7d620b8e5b7356
GIT binary patch
literal 594
zc$@)J0<HatP)<h;3K|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU
z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd
zX$nnYLt$-$V!?uy+1V%`z&Eh=ah|duER<4|QWhju3gb^nF*8iYobxWG-qqXl=2~5M
z*IoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsH*yYzpvLT
zLdY<T=ks|woh-`&01!ej#(xbV1f|pI*=%;d-%F*E*X#ZH`4I%6SS+$EJDE&ct=8po
ziN#{?_j|kD%Cd|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^|Fn^Y?Gdc6<;
zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V
z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W-
zaR2~ECX?B2w+zELozC0s*6Z~|QG^f{3I#<`?)Q7U-JZ|q5W;9Q8i_=pBuSzunx=U;
z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K
zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#=
gQItJW-{SoTm)8|5##k|m00000NkvXXu0mjf3JwksH2?qr
$ hg diff --git -r 2 -r 3
diff --git a/binfile.bin b/nonbinfile
copy from binfile.bin
copy to nonbinfile
index 37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9..8e27be7d6154a1f68ea9160ef0e18691d20560dc
GIT binary patch
literal 5
Mc$_OqttjCF00uV!&;S4c
$ cd ..
Test text mode with extended git-style diff format
$ hg init b
$ cd b
$ cat > writebin.py <<EOF
> import sys
> path = sys.argv[1]
> open(path, 'wb').write(b'\x00\x01\x02\x03')
> EOF
$ "$PYTHON" writebin.py binfile.bin
$ hg add binfile.bin
$ hg ci -m 'add binfile.bin'
$ echo >> binfile.bin
$ hg ci -m 'change binfile.bin'
$ hg diff --git -a -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
--- a/binfile.bin
+++ b/binfile.bin
@@ -1,1 +1,1 @@
-\x00\x01\x02\x03 (esc)
\ No newline at end of file
+\x00\x01\x02\x03 (esc)
$ HGPLAIN=1 hg diff --git -a -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
--- a/binfile.bin
+++ b/binfile.bin
@@ -1,1 +1,1 @@
-\x00\x01\x02\x03 (esc)
\ No newline at end of file
+\x00\x01\x02\x03 (esc)
Test binary mode with extended git-style diff format
$ hg diff --no-binary -r 0 -r 1
diff -r fb45f71337ad -r 9ca112d1a3c1 binfile.bin
Binary file binfile.bin has changed
$ hg diff --git --no-binary -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
Binary file binfile.bin has changed
$ hg diff --git --binary -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
index eaf36c1daccfdf325514461cd1a2ffbc139b5464..ba71a782e93f3fb63a428383706065e3ec2828e9
GIT binary patch
literal 5
Mc${NkWMbw50018V5dZ)H
$ hg diff --git --binary --config diff.nobinary=True -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
index eaf36c1daccfdf325514461cd1a2ffbc139b5464..ba71a782e93f3fb63a428383706065e3ec2828e9
GIT binary patch
literal 5
Mc${NkWMbw50018V5dZ)H
$ hg diff --git --binary --text -r 0 -r 1
diff --git a/binfile.bin b/binfile.bin
--- a/binfile.bin
+++ b/binfile.bin
@@ -1,1 +1,1 @@
-\x00\x01\x02\x03 (esc)
\ No newline at end of file
+\x00\x01\x02\x03 (esc)
$ cd ..