discovery-helper: use reflink copy if available
A reflink copy will copy the files "as usual" but keep using the same data block
underneath. This is only supported by "copy on write" file system like btrfs or
zfs.
This will achieve similar performance that the existing hardlink clone that
Mercurial performs with the same initial space saving. However, it will behave
better on revlogs start being touch by strip. Instead of duplicating all data in
the touched revlogs, only the block actually affected by the strip will be
duplicated. This save a lot of space when building many variants of large
repositories.
The --reflink=always flag make sure the `cp` call fails if reflink copies are
not supported. Falling back to local clone.
$ echo "[extensions]" >> $HGRCPATH
$ echo "churn=" >> $HGRCPATH
create test repository
$ hg init repo
$ cd repo
$ echo a > a
$ hg ci -Am adda -u user1 -d 6:00
adding a
$ echo b >> a
$ echo b > b
$ hg ci -m changeba -u user2 -d 9:00 a
$ hg ci -Am addb -u user2 -d 9:30
adding b
$ echo c >> a
$ echo c >> b
$ echo c > c
$ hg ci -m changeca -u user3 -d 12:00 a
$ hg ci -m changecb -u user3 -d 12:15 b
$ hg ci -Am addc -u user3 -d 12:30
adding c
$ mkdir -p d/e
$ echo abc > d/e/f1.txt
$ hg ci -Am "add d/e/f1.txt" -u user1 -d 12:45 d/e/f1.txt
$ mkdir -p d/g
$ echo def > d/g/f2.txt
$ hg ci -Am "add d/g/f2.txt" -u user1 -d 13:00 d/g/f2.txt
churn separate directories
$ cd d
$ hg churn e
user1 1 ***************************************************************
churn all
$ hg churn
user1 3 ***************************************************************
user3 3 ***************************************************************
user2 2 ******************************************
churn excluding one dir
$ hg churn -X e
user3 3 ***************************************************************
user1 2 ******************************************
user2 2 ******************************************
churn up to rev 2
$ hg churn -r :2
user2 2 ***************************************************************
user1 1 *******************************
$ cd ..
churn with aliases
$ cat > ../aliases <<EOF
> user1 alias1
> user3 alias3
> not-an-alias
> EOF
churn with .hgchurn
$ mv ../aliases .hgchurn
$ hg churn
skipping malformed alias: not-an-alias
alias1 3 **************************************************************
alias3 3 **************************************************************
user2 2 *****************************************
$ rm .hgchurn
churn with column specifier
$ COLUMNS=40 hg churn
user1 3 ***********************
user3 3 ***********************
user2 2 ***************
churn by hour
$ hg churn -f '%H' -s
06 1 ****************
09 2 *********************************
12 4 ******************************************************************
13 1 ****************
churn with separated added/removed lines
$ hg rm d/g/f2.txt
$ hg ci -Am "removed d/g/f2.txt" -u user1 -d 14:00 d/g/f2.txt
$ hg churn --diffstat
user1 +3/-1 ++++++++++++++++++++++++++++++++++++++++-------------
user3 +3/-0 ++++++++++++++++++++++++++++++++++++++++
user2 +2/-0 +++++++++++++++++++++++++++
churn --diffstat with color
$ hg --config extensions.color= churn --config color.mode=ansi \
> --diffstat --color=always
user1 +3/-1 \x1b[0;32m++++++++++++++++++++++++++++++++++++++++\x1b[0m\x1b[0;31m-------------\x1b[0m (esc)
user3 +3/-0 \x1b[0;32m++++++++++++++++++++++++++++++++++++++++\x1b[0m (esc)
user2 +2/-0 \x1b[0;32m+++++++++++++++++++++++++++\x1b[0m (esc)
changeset number churn
$ hg churn -c
user1 4 ***************************************************************
user3 3 ***********************************************
user2 2 *******************************
$ echo 'with space = no-space' >> ../aliases
$ echo a >> a
$ hg commit -m a -u 'with space' -d 15:00
churn with space in alias
$ hg churn --aliases ../aliases -r tip
no-space 1 ************************************************************
$ cd ..
Issue833: ZeroDivisionError
$ hg init issue-833
$ cd issue-833
$ touch foo
$ hg ci -Am foo
adding foo
this was failing with a ZeroDivisionError
$ hg churn
test 0
$ cd ..
Ignore trailing or leading spaces in emails
$ cd repo
$ touch bar
$ hg ci -Am'bar' -u 'user4 <user4@x.com>'
adding bar
$ touch foo
$ hg ci -Am'foo' -u 'user4 < user4@x.com >'
adding foo
$ hg log -l2 --template '[{author|email}]\n'
[ user4@x.com ]
[user4@x.com]
$ hg churn -c
user1 4 *********************************************************
user3 3 ******************************************
user2 2 ****************************
user4@x.com 2 ****************************
with space 1 **************
Test multibyte sequences in names
$ echo bar >> bar
$ hg --encoding utf-8 ci -m'changed bar' -u 'El Niño <nino@x.com>'
$ hg --encoding utf-8 churn -ct '{author|person}'
user1 4 **********************************************************
user3 3 *******************************************
user2 2 *****************************
user4 2 *****************************
El Ni\xc3\xb1o 1 ************** (esc)
with space 1 **************
Test --template argument, with backwards compatibility
$ hg churn -t '{author|user}'
user1 4 ***************************************************************
user3 3 ***********************************************
user2 2 *******************************
nino 1 ***************
with 1 ***************
0
user4 0
$ hg churn -T '{author|user}'
user1 4 ***************************************************************
user3 3 ***********************************************
user2 2 *******************************
nino 1 ***************
with 1 ***************
0
user4 0
$ hg churn -t 'alltogether'
alltogether 11 *********************************************************
$ hg churn -T 'alltogether'
alltogether 11 *********************************************************
$ cd ..