view tests/test-convert-p4-filetypes.t @ 42743:8c9a6adec67a

rust-discovery: using the children cache in add_missing

The DAG range computation often needs to get back to very old
revisions, and turns out to be disproportionately long, given
that the end goal is to remove the descendents of the given
missing revisons from the undecided set.

The fast iteration capabilities available in the Rust case make
it possible to avoid the DAG range entirely, at the cost of
precomputing the children cache, and to simply iterate on
children of the given missing revisions.

This is a case where staying on the same side of the interface
between the two languages has clear benefits.

On discoveries with initial undecided sets
small enough to bypass sampling entirely, the total cost of
computing the children cache and the subsequent iteration
becomes better than the Python + C counterpart, which relies on
reachableroots2.

For example, on a repo with more than one million revisions with
an initial undecided set of 11 elements, we get these figures:

Rust version with simple iteration
  addcommons: 57.287us
  first undecided computation: 184.278334ms
  first children cache computation: 131.056us
  addmissings iteration: 42.766us
  first addinfo total: 185.24 ms

Python + C version
  first addcommons: 0.29 ms
  addcommons 0.21 ms
  first undecided computation 191.35 ms
  addmissings 45.75 ms
  first addinfo total: 237.77 ms

On discoveries with large undecided sets, the initial price paid
makes the first addinfo slower than the Python + C version,
but that's more than compensated by the gain in sampling and
subsequent iterations.
Here's an extreme example with an undecided set of a million revisions:

Rust version:
  first undecided computation: 293.842629ms
  first children cache computation: 407.911297ms
  addmissings iteration: 34.312869ms
  first addinfo total: 776.02 ms
  taking initial sample
  query 2: sampling time: 1318.38 ms
  query 2; still undecided: 1005013, sample size is: 200
  addmissings: 143.062us

Python + C version:
  first undecided computation 298.13 ms
  addmissings 80.13 ms
  first addinfo total: 399.62 ms
  taking initial sample
  query 2: sampling time: 3957.23 ms
  query 2; still undecided: 1005013, sample size is: 200
  addmissings 52.88 ms

Differential Revision: https://phab.mercurial-scm.org/D6428

#require p4 execbit symlink

  $ 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:$HGPORT; 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*)
  >          "$PYTHON" -c "open('file_$T2', 'wb').write(b'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
  scanning source...
  reading p4 views
  collecting p4 changelists
  1 initial
  2 keywords
  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_tempobj 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_xtempobj 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
  32 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_tempobj <==
  this is tempobj
  $Id$
  $Header$
  $Date$
  $DateTime$
  $Change$
  $File$
  $Revision$
  $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_xtempobj <==
  this is xtempobj
  $Id$
  $Header$
  $Date$
  $DateTime$
  $Change$
  $File$
  $Revision$
  $Header$$Header$Header$
  
  ==> dst/file_xtext <==
  this is xtext
  $Id$
  $Header$
  $Date$
  $DateTime$
  $Change$
  $File$
  $Revision$
  $Header$$Header$Header$

crazy_symlink
  $ readlink.py crazy_symlink+k
  crazy_symlink+k -> target_$Header: //depot/test-mercurial-import/crazy_symlink+k#1 $
  $ readlink.py dst/crazy_symlink+k
  dst/crazy_symlink+k -> target_$Header$

exit trap:
  stopping the p4 server