obsolete: order of magnitude speedup in _computebumpedset
Reminder: a changeset is said "bumped" if it tries to obsolete a immutable
changeset.
The previous algorithm for computing bumped changeset was:
1) Get all public changesets
2) Find all they successors
3) Search for stuff that are eligible for being "bumped"
(mutable and non obsolete)
The entry size of this algorithm is `O(len(public))` which is mostly the same as
`O(len(repo))`. Even this this approach mean fewer obsolescence marker are
traveled, this is not very scalable.
The new algorithm is:
1) For each potential bumped changesets (non obsolete mutable)
2) iterate over precursors
3) if a precursors is public. changeset is bumped
We travel more obsolescence marker, but the entry size is much smaller since
the amount of potential bumped should remains mostly stable with time `O(1)`.
On some confidential gigantic repo this move bumped computation from 15.19s to
0.46s (×33 speedup…). On "smaller" repo (mercurial, cubicweb's review) no
significant gain were seen. The additional traversal of obsolescence marker is
probably probably counter balance the advantage of it.
Other optimisation could be done in the future (eg: sharing precursors cache
for divergence detection)
$ "$TESTDIR/hghave" p4 execbit symlink || exit 80
$ echo "[extensions]" >> $HGRCPATH
$ echo "convert = " >> $HGRCPATH
create p4 depot
$ P4ROOT=`pwd`/depot; export P4ROOT
$ P4AUDIT=$P4ROOT/audit; export P4AUDIT
$ P4JOURNAL=$P4ROOT/journal; export P4JOURNAL
$ P4LOG=$P4ROOT/log; export P4LOG
$ P4PORT=localhost:16661; export P4PORT
$ P4DEBUG=1; export P4DEBUG
$ P4CHARSET=utf8; export P4CHARSET
start the p4 server
$ [ ! -d $P4ROOT ] && mkdir $P4ROOT
$ p4d -f -J off -xi >$P4ROOT/stdout 2>$P4ROOT/stderr
$ p4d -f -J off >$P4ROOT/stdout 2>$P4ROOT/stderr &
$ echo $! >> $DAEMON_PIDS
$ trap "echo stopping the p4 server ; p4 admin stop" EXIT
wait for the server to initialize
$ while ! p4 ; do
> sleep 1
> done >/dev/null 2>/dev/null
create a client spec
$ P4CLIENT=hg-p4-import; export P4CLIENT
$ DEPOTPATH=//depot/test-mercurial-import/...
$ p4 client -o | sed '/^View:/,$ d' >p4client
$ echo View: >>p4client
$ echo " $DEPOTPATH //$P4CLIENT/..." >>p4client
$ p4 client -i <p4client
Client hg-p4-import saved.
populate the depot
$ TYPES="text binary symlink"
$ TYPES="$TYPES text+m text+w text+x text+k text+kx text+ko text+l text+C text+D text+F text+S text+S2"
$ TYPES="$TYPES binary+k binary+x binary+kx symlink+k"
$ TYPES="$TYPES ctext cxtext ktext kxtext ltext tempobj ubinary uxbinary xbinary xltext xtempobj xtext"
not testing these
$ #TYPES="$TYPES apple resource unicode utf16 uresource xunicode xutf16"
$ for T in $TYPES ; do
> T2=`echo $T | tr [:upper:] [:lower:]`
> case $T in
> apple)
> ;;
> symlink*)
> echo "this is target $T" >target_$T2
> ln -s target_$T file_$T2
> p4 add target_$T2
> p4 add -t $T file_$T2
> ;;
> binary*)
> python -c "file('file_$T2', 'wb').write('this is $T')"
> p4 add -t $T file_$T2
> ;;
> *)
> echo "this is $T" >file_$T2
> p4 add -t $T file_$T2
> ;;
> esac
> done
//depot/test-mercurial-import/file_text#1 - opened for add
//depot/test-mercurial-import/file_binary#1 - opened for add
//depot/test-mercurial-import/target_symlink#1 - opened for add
//depot/test-mercurial-import/file_symlink#1 - opened for add
//depot/test-mercurial-import/file_text+m#1 - opened for add
//depot/test-mercurial-import/file_text+w#1 - opened for add
//depot/test-mercurial-import/file_text+x#1 - opened for add
//depot/test-mercurial-import/file_text+k#1 - opened for add
//depot/test-mercurial-import/file_text+kx#1 - opened for add
//depot/test-mercurial-import/file_text+ko#1 - opened for add
//depot/test-mercurial-import/file_text+l#1 - opened for add
//depot/test-mercurial-import/file_text+c#1 - opened for add
//depot/test-mercurial-import/file_text+d#1 - opened for add
//depot/test-mercurial-import/file_text+f#1 - opened for add
//depot/test-mercurial-import/file_text+s#1 - opened for add
//depot/test-mercurial-import/file_text+s2#1 - opened for add
//depot/test-mercurial-import/file_binary+k#1 - opened for add
//depot/test-mercurial-import/file_binary+x#1 - opened for add
//depot/test-mercurial-import/file_binary+kx#1 - opened for add
//depot/test-mercurial-import/target_symlink+k#1 - opened for add
//depot/test-mercurial-import/file_symlink+k#1 - opened for add
//depot/test-mercurial-import/file_ctext#1 - opened for add
//depot/test-mercurial-import/file_cxtext#1 - opened for add
//depot/test-mercurial-import/file_ktext#1 - opened for add
//depot/test-mercurial-import/file_kxtext#1 - opened for add
//depot/test-mercurial-import/file_ltext#1 - opened for add
//depot/test-mercurial-import/file_tempobj#1 - opened for add
//depot/test-mercurial-import/file_ubinary#1 - opened for add
//depot/test-mercurial-import/file_uxbinary#1 - opened for add
//depot/test-mercurial-import/file_xbinary#1 - opened for add
//depot/test-mercurial-import/file_xltext#1 - opened for add
//depot/test-mercurial-import/file_xtempobj#1 - opened for add
//depot/test-mercurial-import/file_xtext#1 - opened for add
$ p4 submit -d initial
Submitting change 1.
Locking 33 files ...
add //depot/test-mercurial-import/file_binary#1
add //depot/test-mercurial-import/file_binary+k#1
add //depot/test-mercurial-import/file_binary+kx#1
add //depot/test-mercurial-import/file_binary+x#1
add //depot/test-mercurial-import/file_ctext#1
add //depot/test-mercurial-import/file_cxtext#1
add //depot/test-mercurial-import/file_ktext#1
add //depot/test-mercurial-import/file_kxtext#1
add //depot/test-mercurial-import/file_ltext#1
add //depot/test-mercurial-import/file_symlink#1
add //depot/test-mercurial-import/file_symlink+k#1
add //depot/test-mercurial-import/file_tempobj#1
add //depot/test-mercurial-import/file_text#1
add //depot/test-mercurial-import/file_text+c#1
add //depot/test-mercurial-import/file_text+d#1
add //depot/test-mercurial-import/file_text+f#1
add //depot/test-mercurial-import/file_text+k#1
add //depot/test-mercurial-import/file_text+ko#1
add //depot/test-mercurial-import/file_text+kx#1
add //depot/test-mercurial-import/file_text+l#1
add //depot/test-mercurial-import/file_text+m#1
add //depot/test-mercurial-import/file_text+s#1
add //depot/test-mercurial-import/file_text+s2#1
add //depot/test-mercurial-import/file_text+w#1
add //depot/test-mercurial-import/file_text+x#1
add //depot/test-mercurial-import/file_ubinary#1
add //depot/test-mercurial-import/file_uxbinary#1
add //depot/test-mercurial-import/file_xbinary#1
add //depot/test-mercurial-import/file_xltext#1
add //depot/test-mercurial-import/file_xtempobj#1
add //depot/test-mercurial-import/file_xtext#1
add //depot/test-mercurial-import/target_symlink#1
add //depot/test-mercurial-import/target_symlink+k#1
Change 1 submitted.
//depot/test-mercurial-import/file_binary+k#1 - refreshing
//depot/test-mercurial-import/file_binary+kx#1 - refreshing
//depot/test-mercurial-import/file_ktext#1 - refreshing
//depot/test-mercurial-import/file_kxtext#1 - refreshing
//depot/test-mercurial-import/file_symlink+k#1 - refreshing
//depot/test-mercurial-import/file_text+k#1 - refreshing
//depot/test-mercurial-import/file_text+ko#1 - refreshing
//depot/test-mercurial-import/file_text+kx#1 - refreshing
test keyword expansion
$ p4 edit file_* target_*
//depot/test-mercurial-import/file_binary#1 - opened for edit
//depot/test-mercurial-import/file_binary+k#1 - opened for edit
//depot/test-mercurial-import/file_binary+kx#1 - opened for edit
//depot/test-mercurial-import/file_binary+x#1 - opened for edit
//depot/test-mercurial-import/file_ctext#1 - opened for edit
//depot/test-mercurial-import/file_cxtext#1 - opened for edit
//depot/test-mercurial-import/file_ktext#1 - opened for edit
//depot/test-mercurial-import/file_kxtext#1 - opened for edit
//depot/test-mercurial-import/file_ltext#1 - opened for edit
//depot/test-mercurial-import/file_symlink#1 - opened for edit
//depot/test-mercurial-import/file_symlink+k#1 - opened for edit
//depot/test-mercurial-import/file_tempobj#1 - opened for edit
//depot/test-mercurial-import/file_text#1 - opened for edit
//depot/test-mercurial-import/file_text+c#1 - opened for edit
//depot/test-mercurial-import/file_text+d#1 - opened for edit
//depot/test-mercurial-import/file_text+f#1 - opened for edit
//depot/test-mercurial-import/file_text+k#1 - opened for edit
//depot/test-mercurial-import/file_text+ko#1 - opened for edit
//depot/test-mercurial-import/file_text+kx#1 - opened for edit
//depot/test-mercurial-import/file_text+l#1 - opened for edit
//depot/test-mercurial-import/file_text+m#1 - opened for edit
//depot/test-mercurial-import/file_text+s#1 - opened for edit
//depot/test-mercurial-import/file_text+s2#1 - opened for edit
//depot/test-mercurial-import/file_text+w#1 - opened for edit
//depot/test-mercurial-import/file_text+x#1 - opened for edit
//depot/test-mercurial-import/file_ubinary#1 - opened for edit
//depot/test-mercurial-import/file_uxbinary#1 - opened for edit
//depot/test-mercurial-import/file_xbinary#1 - opened for edit
//depot/test-mercurial-import/file_xltext#1 - opened for edit
//depot/test-mercurial-import/file_xtempobj#1 - opened for edit
//depot/test-mercurial-import/file_xtext#1 - opened for edit
//depot/test-mercurial-import/target_symlink#1 - opened for edit
//depot/test-mercurial-import/target_symlink+k#1 - opened for edit
$ for T in $TYPES ; do
> T2=`echo $T | tr [:upper:] [:lower:]`
> echo '$Id$' >>file_$T2
> echo '$Header$' >>file_$T2
> echo '$Date$' >>file_$T2
> echo '$DateTime$' >>file_$T2
> echo '$Change$' >>file_$T2
> echo '$File$' >>file_$T2
> echo '$Revision$' >>file_$T2
> echo '$Header$$Header$Header$' >>file_$T2
> done
$ ln -s 'target_$Header$' crazy_symlink+k
$ p4 add -t symlink+k crazy_symlink+k
//depot/test-mercurial-import/crazy_symlink+k#1 - opened for add
$ p4 submit -d keywords
Submitting change 2.
Locking 34 files ...
add //depot/test-mercurial-import/crazy_symlink+k#1
edit //depot/test-mercurial-import/file_binary#2
edit //depot/test-mercurial-import/file_binary+k#2
edit //depot/test-mercurial-import/file_binary+kx#2
edit //depot/test-mercurial-import/file_binary+x#2
edit //depot/test-mercurial-import/file_ctext#2
edit //depot/test-mercurial-import/file_cxtext#2
edit //depot/test-mercurial-import/file_ktext#2
edit //depot/test-mercurial-import/file_kxtext#2
edit //depot/test-mercurial-import/file_ltext#2
edit //depot/test-mercurial-import/file_symlink#2
edit //depot/test-mercurial-import/file_symlink+k#2
edit //depot/test-mercurial-import/file_tempobj#2
edit //depot/test-mercurial-import/file_text#2
edit //depot/test-mercurial-import/file_text+c#2
edit //depot/test-mercurial-import/file_text+d#2
edit //depot/test-mercurial-import/file_text+f#2
edit //depot/test-mercurial-import/file_text+k#2
edit //depot/test-mercurial-import/file_text+ko#2
edit //depot/test-mercurial-import/file_text+kx#2
edit //depot/test-mercurial-import/file_text+l#2
edit //depot/test-mercurial-import/file_text+m#2
edit //depot/test-mercurial-import/file_text+s#2
edit //depot/test-mercurial-import/file_text+s2#2
edit //depot/test-mercurial-import/file_text+w#2
edit //depot/test-mercurial-import/file_text+x#2
edit //depot/test-mercurial-import/file_ubinary#2
edit //depot/test-mercurial-import/file_uxbinary#2
edit //depot/test-mercurial-import/file_xbinary#2
edit //depot/test-mercurial-import/file_xltext#2
edit //depot/test-mercurial-import/file_xtempobj#2
edit //depot/test-mercurial-import/file_xtext#2
edit //depot/test-mercurial-import/target_symlink#2
edit //depot/test-mercurial-import/target_symlink+k#2
Change 2 submitted.
//depot/test-mercurial-import/crazy_symlink+k#1 - refreshing
//depot/test-mercurial-import/file_binary+k#2 - refreshing
//depot/test-mercurial-import/file_binary+kx#2 - refreshing
//depot/test-mercurial-import/file_ktext#2 - refreshing
//depot/test-mercurial-import/file_kxtext#2 - refreshing
//depot/test-mercurial-import/file_symlink+k#2 - refreshing
//depot/test-mercurial-import/file_text+k#2 - refreshing
//depot/test-mercurial-import/file_text+ko#2 - refreshing
//depot/test-mercurial-import/file_text+kx#2 - refreshing
check keywords in p4
$ grep -H Header file_*
file_binary:$Header$
file_binary:$Header$$Header$Header$
file_binary+k:$Header: //depot/test-mercurial-import/file_binary+k#2 $
file_binary+k:$Header: //depot/test-mercurial-import/file_binary+k#2 $$Header: //depot/test-mercurial-import/file_binary+k#2 $Header$
file_binary+kx:$Header: //depot/test-mercurial-import/file_binary+kx#2 $
file_binary+kx:$Header: //depot/test-mercurial-import/file_binary+kx#2 $$Header: //depot/test-mercurial-import/file_binary+kx#2 $Header$
file_binary+x:$Header$
file_binary+x:$Header$$Header$Header$
file_ctext:$Header$
file_ctext:$Header$$Header$Header$
file_cxtext:$Header$
file_cxtext:$Header$$Header$Header$
file_ktext:$Header: //depot/test-mercurial-import/file_ktext#2 $
file_ktext:$Header: //depot/test-mercurial-import/file_ktext#2 $$Header: //depot/test-mercurial-import/file_ktext#2 $Header$
file_kxtext:$Header: //depot/test-mercurial-import/file_kxtext#2 $
file_kxtext:$Header: //depot/test-mercurial-import/file_kxtext#2 $$Header: //depot/test-mercurial-import/file_kxtext#2 $Header$
file_ltext:$Header$
file_ltext:$Header$$Header$Header$
file_symlink:$Header$
file_symlink:$Header$$Header$Header$
file_symlink+k:$Header$
file_symlink+k:$Header$$Header$Header$
file_tempobj:$Header$
file_tempobj:$Header$$Header$Header$
file_text:$Header$
file_text:$Header$$Header$Header$
file_text+c:$Header$
file_text+c:$Header$$Header$Header$
file_text+d:$Header$
file_text+d:$Header$$Header$Header$
file_text+f:$Header$
file_text+f:$Header$$Header$Header$
file_text+k:$Header: //depot/test-mercurial-import/file_text+k#2 $
file_text+k:$Header: //depot/test-mercurial-import/file_text+k#2 $$Header: //depot/test-mercurial-import/file_text+k#2 $Header$
file_text+ko:$Header: //depot/test-mercurial-import/file_text+ko#2 $
file_text+ko:$Header: //depot/test-mercurial-import/file_text+ko#2 $$Header: //depot/test-mercurial-import/file_text+ko#2 $Header$
file_text+kx:$Header: //depot/test-mercurial-import/file_text+kx#2 $
file_text+kx:$Header: //depot/test-mercurial-import/file_text+kx#2 $$Header: //depot/test-mercurial-import/file_text+kx#2 $Header$
file_text+l:$Header$
file_text+l:$Header$$Header$Header$
file_text+m:$Header$
file_text+m:$Header$$Header$Header$
file_text+s:$Header$
file_text+s:$Header$$Header$Header$
file_text+s2:$Header$
file_text+s2:$Header$$Header$Header$
file_text+w:$Header$
file_text+w:$Header$$Header$Header$
file_text+x:$Header$
file_text+x:$Header$$Header$Header$
file_ubinary:$Header$
file_ubinary:$Header$$Header$Header$
file_uxbinary:$Header$
file_uxbinary:$Header$$Header$Header$
file_xbinary:$Header$
file_xbinary:$Header$$Header$Header$
file_xltext:$Header$
file_xltext:$Header$$Header$Header$
file_xtempobj:$Header$
file_xtempobj:$Header$$Header$Header$
file_xtext:$Header$
file_xtext:$Header$$Header$Header$
convert
$ hg convert -s p4 $DEPOTPATH dst
initializing destination dst repository
reading p4 views
collecting p4 changelists
1 initial
2 keywords
scanning source...
sorting...
converting...
1 initial
0 keywords
$ hg -R dst log --template 'rev={rev} desc="{desc}" tags="{tags}" files="{files}"\n'
rev=1 desc="keywords" tags="tip" files="crazy_symlink+k file_binary file_binary+k file_binary+kx file_binary+x file_ctext file_cxtext file_ktext file_kxtext file_ltext file_text file_text+c file_text+d file_text+f file_text+k file_text+ko file_text+kx file_text+l file_text+m file_text+s file_text+s2 file_text+w file_text+x file_ubinary file_uxbinary file_xbinary file_xltext file_xtext target_symlink target_symlink+k"
rev=0 desc="initial" tags="" files="file_binary file_binary+k file_binary+kx file_binary+x file_ctext file_cxtext file_ktext file_kxtext file_ltext file_symlink file_symlink+k file_text file_text+c file_text+d file_text+f file_text+k file_text+ko file_text+kx file_text+l file_text+m file_text+s2 file_text+w file_text+x file_ubinary file_uxbinary file_xbinary file_xltext file_xtext target_symlink target_symlink+k"
revision 0
$ hg -R dst update 0
30 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ head dst/file_* | cat -v
==> dst/file_binary <==
this is binary
==> dst/file_binary+k <==
this is binary+k
==> dst/file_binary+kx <==
this is binary+kx
==> dst/file_binary+x <==
this is binary+x
==> dst/file_ctext <==
this is ctext
==> dst/file_cxtext <==
this is cxtext
==> dst/file_ktext <==
this is ktext
==> dst/file_kxtext <==
this is kxtext
==> dst/file_ltext <==
this is ltext
==> dst/file_symlink <==
this is target symlink
==> dst/file_symlink+k <==
this is target symlink+k
==> dst/file_text <==
this is text
==> dst/file_text+c <==
this is text+C
==> dst/file_text+d <==
this is text+D
==> dst/file_text+f <==
this is text+F
==> dst/file_text+k <==
this is text+k
==> dst/file_text+ko <==
this is text+ko
==> dst/file_text+kx <==
this is text+kx
==> dst/file_text+l <==
this is text+l
==> dst/file_text+m <==
this is text+m
==> dst/file_text+s2 <==
this is text+S2
==> dst/file_text+w <==
this is text+w
==> dst/file_text+x <==
this is text+x
==> dst/file_ubinary <==
this is ubinary
==> dst/file_uxbinary <==
this is uxbinary
==> dst/file_xbinary <==
this is xbinary
==> dst/file_xltext <==
this is xltext
==> dst/file_xtext <==
this is xtext
revision 1
$ hg -R dst update 1
30 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ head dst/file_* | cat -v
==> dst/file_binary <==
this is binary$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_binary+k <==
this is binary+k$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_binary+kx <==
this is binary+kx$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_binary+x <==
this is binary+x$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ctext <==
this is ctext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_cxtext <==
this is cxtext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ktext <==
this is ktext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_kxtext <==
this is kxtext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ltext <==
this is ltext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_symlink <==
this is target symlink
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_symlink+k <==
this is target symlink+k
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text <==
this is text
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+c <==
this is text+C
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+d <==
this is text+D
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+f <==
this is text+F
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+k <==
this is text+k
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+ko <==
this is text+ko
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+kx <==
this is text+kx
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+l <==
this is text+l
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+m <==
this is text+m
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+s <==
this is text+S
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+s2 <==
this is text+S2
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+w <==
this is text+w
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_text+x <==
this is text+x
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_ubinary <==
this is ubinary
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_uxbinary <==
this is uxbinary
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_xbinary <==
this is xbinary
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_xltext <==
this is xltext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
==> dst/file_xtext <==
this is xtext
$Id$
$Header$
$Date$
$DateTime$
$Change$
$File$
$Revision$
$Header$$Header$Header$
crazy_symlink
$ readlink crazy_symlink+k
target_$Header: //depot/test-mercurial-import/crazy_symlink+k#1 $
$ readlink dst/crazy_symlink+k
target_$Header$
exit trap:
stopping the p4 server