context: introduce p[12]copies() methods and debugp[12]copies commands
As mentioned earlier, I'm working on support for storing copy metadata
in the changeset instead of in the filelog.
In order to transition a repo from storing metadata in filelogs to
storing it in the changeset, I'm going to provide a config option for
reading the metadata from the changeset, but falling back to getting
it from the filelog if it's not in the changeset. In this compatiblity
mode, the changeset-optmized algorithms will be used. We will then
need to convert the filelog copy metadata to look like that provided
by changeset copy metadata. This patch introduces methods that do just
that.
By having these methods here, we can start writing changeset-optimized
algorithms that should work already before we add any support for
storing the metadata in the changesets.
This commit also includes new debugp[12]copies commands and exercises
them in test-copies.t.
Differential Revision: https://phab.mercurial-scm.org/D5990
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ hg init a
$ cd a
$ echo 'base' > base
$ hg ci -Ambase
adding base
$ hg qnew -mmqbase mqbase
$ hg qrename mqbase renamed
$ mkdir .hg/patches/foo
$ hg qrename renamed foo
$ hg qseries
foo/renamed
$ ls .hg/patches/foo
renamed
$ mkdir .hg/patches/bar
$ hg qrename foo/renamed bar
$ hg qseries
bar/renamed
$ ls .hg/patches/bar
renamed
$ hg qrename bar/renamed baz
$ hg qseries
baz
$ ls .hg/patches/baz
.hg/patches/baz
$ hg qrename baz new/dir
$ hg qseries
new/dir
$ ls .hg/patches/new/dir
.hg/patches/new/dir
$ cd ..
Test patch being renamed before committed:
$ hg init b
$ cd b
$ hg qinit -c
$ hg qnew x
$ hg qrename y
$ hg qcommit -m rename
$ cd ..
Test overlapping renames (issue2388)
$ hg init c
$ cd c
$ hg qinit -c
$ echo a > a
$ hg add
adding a
$ hg qnew patcha
$ echo b > b
$ hg add
adding b
$ hg qnew patchb
$ hg ci --mq -m c1
$ hg qrename patchb patchc
$ hg qrename patcha patchb
$ hg st --mq
M patchb
M series
A patchc
R patcha
$ cd ..
Test renames with mq repo (issue2097)
$ hg init issue2097
$ cd issue2097
$ hg qnew p0
$ (cd .hg/patches && hg init)
$ hg qren p0 p1
$ hg debugstate --mq
$ hg ci --mq -mq0
nothing changed
[1]
$ cd ..
Test renaming to a folded patch (issue3058)
$ hg init issue3058
$ cd issue3058
$ hg init --mq
$ echo a > a
$ hg add a
$ hg qnew adda
$ echo b >> a
$ hg qnew addb
$ hg qpop
popping addb
now at: adda
$ hg ci --mq -m "save mq"
$ hg qfold addb
$ hg qmv addb
$ cat .hg/patches/addb
# HG changeset patch
# Parent 0000000000000000000000000000000000000000
diff -r 000000000000 a
--- /dev/null * (glob)
+++ b/a * (glob)
@@ -0,0 +1,2 @@
+a
+b
$ cd ..