tests: replace "cp -r" with "cp -R"
The POSIX documentation about "cp" [1] says:
....
RATIONALE
....
Earlier versions of this standard included support for the -r option to
copy file hierarchies. The -r option is historical practice on BSD and
BSD-derived systems. This option is no longer specified by POSIX.1-2008
but may be present in some implementations. The -R option was added as a
close synonym to the -r option, selected for consistency with all other
options in this volume of POSIX.1-2008 that do recursive directory
descent.
The difference between -R and the removed -r option is in the treatment
by cp of file types other than regular and directory. It was
implementation-defined how the - option treated special files to allow
both historical implementations and those that chose to support -r with
the same abilities as -R defined by this volume of POSIX.1-2008. The
original -r flag, for historic reasons, did not handle special files any
differently from regular files, but always read the file and copied its
contents. This had obvious problems in the presence of special file
types; for example, character devices, FIFOs, and sockets.
....
....
Issue 6
The -r option is marked obsolescent.
....
Issue 7
....
The obsolescent -r option is removed.
....
(No "Issue 8" yet)
Therefore it's clear that "cp -R" is strictly better than "cp -r".
The issue was discovered when running tests on OS X after 0d87b1caed92.
[1]: pubs.opengroup.org/onlinepubs/9699919799/utilities/cp.html
This test makes sure that we don't mark a file as merged with its ancestor
when we do a merge.
$ cat <<EOF > merge
> import sys, os
> print "merging for", os.path.basename(sys.argv[1])
> EOF
$ HGMERGE="python ../merge"; export HGMERGE
Creating base:
$ hg init a
$ cd a
$ echo 1 > foo
$ echo 1 > bar
$ echo 1 > baz
$ echo 1 > quux
$ hg add foo bar baz quux
$ hg commit -m "base"
$ cd ..
$ hg clone a b
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved
Creating branch a:
$ cd a
$ echo 2a > foo
$ echo 2a > bar
$ hg commit -m "branch a"
Creating branch b:
$ cd ..
$ cd b
$ echo 2b > foo
$ echo 2b > baz
$ hg commit -m "branch b"
We shouldn't have anything but n state here:
$ hg debugstate --nodates | grep -v "^n"
[1]
Merging:
$ hg pull ../a
pulling from ../a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg merge -v
resolving manifests
getting bar
merging foo
merging for foo
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ echo 2m > foo
$ echo 2b > baz
$ echo new > quux
$ hg ci -m "merge"
main: we should have a merge here:
$ hg debugindex --changelog
rev offset length ..... linkrev nodeid p1 p2 (re)
0 0 73 ..... 0 cdca01651b96 000000000000 000000000000 (re)
1 73 68 ..... 1 f6718a9cb7f3 cdca01651b96 000000000000 (re)
2 141 68 ..... 2 bdd988058d16 cdca01651b96 000000000000 (re)
3 209 66 ..... 3 d8a521142a3c f6718a9cb7f3 bdd988058d16 (re)
log should show foo and quux changed:
$ hg log -v -r tip
changeset: 3:d8a521142a3c
tag: tip
parent: 1:f6718a9cb7f3
parent: 2:bdd988058d16
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: foo quux
description:
merge
foo: we should have a merge here:
$ hg debugindex foo
rev offset length ..... linkrev nodeid p1 p2 (re)
0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re)
2 7 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re)
3 11 4 ..... 3 aa27919ee430 2ffeddde1b65 33d1fb69067a (re)
bar: we should not have a merge here:
$ hg debugindex bar
rev offset length ..... linkrev nodeid p1 p2 (re)
0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
1 3 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re)
baz: we should not have a merge here:
$ hg debugindex baz
rev offset length ..... linkrev nodeid p1 p2 (re)
0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re)
quux: we should not have a merge here:
$ hg debugindex quux
rev offset length ..... linkrev nodeid p1 p2 (re)
0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
1 3 5 ..... 3 6128c0f33108 b8e02f643373 000000000000 (re)
Manifest entries should match tips of all files:
$ hg manifest --debug
33d1fb69067a0139622a3fa3b7ba1cdb1367972e 644 bar
2ffeddde1b65b4827f6746174a145474129fa2ce 644 baz
aa27919ee4303cfd575e1fb932dd64d75aa08be4 644 foo
6128c0f33108e8cfbb4e0824d13ae48b466d7280 644 quux
Everything should be clean now:
$ hg status
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
4 files, 4 changesets, 10 total revisions
$ cd ..