[PATCH] tests, scripts: Don't import print_function from __future__

[PATCH] tests, scripts: Don't import print_function from __future__

[Peter Maydell]

Some of our Python scripts still include the line
  from __future__ import print_function

which is intended to allow a Python 2 to handle the Python 3 print()
syntax. This particular part of the future arrived many years ago,
and our minimum Python version is 3.9, so we don't need to keep
this line around.

NB: the scripts in tests/tcg/*/gdbstub/ are run with whatever Python
gdb was built against, but we can safely assume that that was a
Python 3 because our supported distros are all on Python 3.  In any
case these are only run as part of "make check-tcg", not by
end-users.

Commit created with:

 sed -i -e '/import print_function/d' $(git grep -l 'from __future__')

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 scripts/userfaultfd-wrlat.py                           | 1 -
 tests/guest-debug/test_gdbstub.py                      | 1 -
 tests/tcg/aarch64/gdbstub/test-mte.py                  | 1 -
 tests/tcg/aarch64/gdbstub/test-sve-ioctl.py            | 1 -
 tests/tcg/aarch64/gdbstub/test-sve.py                  | 1 -
 tests/tcg/multiarch/gdbstub/interrupt.py               | 1 -
 tests/tcg/multiarch/gdbstub/memory.py                  | 1 -
 tests/tcg/multiarch/gdbstub/sha1.py                    | 1 -
 tests/tcg/multiarch/gdbstub/test-proc-mappings.py      | 1 -
 tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py    | 1 -
 tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py | 1 -
 tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py  | 1 -
 tests/tcg/s390x/gdbstub/test-signals-s390x.py          | 1 -
 tests/tcg/s390x/gdbstub/test-svc.py                    | 1 -
 14 files changed, 14 deletions(-)

diff --git a/scripts/userfaultfd-wrlat.py b/scripts/userfaultfd-wrlat.py
index 0684be4e044..a61a9abbfcb 100755
--- a/scripts/userfaultfd-wrlat.py
+++ b/scripts/userfaultfd-wrlat.py
@@ -17,7 +17,6 @@
 # This work is licensed under the terms of the GNU GPL, version 2 or
 # later.  See the COPYING file in the top-level directory.
 
-from __future__ import print_function
 from bcc import BPF
 from ctypes import c_ushort, c_int, c_ulonglong
 from time import sleep
diff --git a/tests/guest-debug/test_gdbstub.py b/tests/guest-debug/test_gdbstub.py
index 4f08089e6a9..e017ccb55d7 100644
--- a/tests/guest-debug/test_gdbstub.py
+++ b/tests/guest-debug/test_gdbstub.py
@@ -1,7 +1,6 @@
 """Helper functions for gdbstub testing
 
 """
-from __future__ import print_function
 import argparse
 import gdb
 import os
diff --git a/tests/tcg/aarch64/gdbstub/test-mte.py b/tests/tcg/aarch64/gdbstub/test-mte.py
index 9ad98e7a54c..f4a7d7b4465 100644
--- a/tests/tcg/aarch64/gdbstub/test-mte.py
+++ b/tests/tcg/aarch64/gdbstub/test-mte.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test GDB memory-tag commands that exercise the stubs for the qIsAddressTagged,
 # qMemTag, and QMemTag packets, which are used for manipulating allocation tags.
diff --git a/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py b/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
index a78a3a2514d..2c5c2180319 100644
--- a/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
+++ b/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test the SVE ZReg reports the right amount of data. It uses the
 # sve-ioctl test and examines the register data each time the
diff --git a/tests/tcg/aarch64/gdbstub/test-sve.py b/tests/tcg/aarch64/gdbstub/test-sve.py
index 84cdcd4a32e..7b0489a622b 100644
--- a/tests/tcg/aarch64/gdbstub/test-sve.py
+++ b/tests/tcg/aarch64/gdbstub/test-sve.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test the SVE registers are visible and changeable via gdbstub
 #
diff --git a/tests/tcg/multiarch/gdbstub/interrupt.py b/tests/tcg/multiarch/gdbstub/interrupt.py
index 2d5654d1540..4eccdb41b97 100644
--- a/tests/tcg/multiarch/gdbstub/interrupt.py
+++ b/tests/tcg/multiarch/gdbstub/interrupt.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test some of the system debug features with the multiarch memory
 # test. It is a port of the original vmlinux focused test case but
diff --git a/tests/tcg/multiarch/gdbstub/memory.py b/tests/tcg/multiarch/gdbstub/memory.py
index 532b92e7fb3..76d75e52512 100644
--- a/tests/tcg/multiarch/gdbstub/memory.py
+++ b/tests/tcg/multiarch/gdbstub/memory.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test some of the system debug features with the multiarch memory
 # test. It is a port of the original vmlinux focused test case but
diff --git a/tests/tcg/multiarch/gdbstub/sha1.py b/tests/tcg/multiarch/gdbstub/sha1.py
index 1ce711a402c..3403b82fd4a 100644
--- a/tests/tcg/multiarch/gdbstub/sha1.py
+++ b/tests/tcg/multiarch/gdbstub/sha1.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # A very simple smoke test for debugging the SHA1 userspace test on
 # each target.
diff --git a/tests/tcg/multiarch/gdbstub/test-proc-mappings.py b/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
index 6eb6ebf7b17..796dca75f0c 100644
--- a/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
+++ b/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
@@ -1,7 +1,6 @@
 """Test that gdbstub has access to proc mappings.
 
 This runs as a sourced script (via -x, via run-test.py)."""
-from __future__ import print_function
 import gdb
 from test_gdbstub import gdb_exit, main, report
 
diff --git a/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py b/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py
index 00c26ab4a95..fa36c943d66 100644
--- a/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py
+++ b/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test auxiliary vector is loaded via gdbstub
 #
diff --git a/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py b/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py
index 862596b07a7..b18fa1234fb 100644
--- a/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py
+++ b/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test gdbstub Xfer:siginfo:read stub.
 #
diff --git a/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py b/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
index 4d6b6b9fbe7..49cbc3548f6 100644
--- a/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
+++ b/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 #
 # Test auxiliary vector is loaded via gdbstub
 #
diff --git a/tests/tcg/s390x/gdbstub/test-signals-s390x.py b/tests/tcg/s390x/gdbstub/test-signals-s390x.py
index b6b7b39fc46..398ad534ebf 100644
--- a/tests/tcg/s390x/gdbstub/test-signals-s390x.py
+++ b/tests/tcg/s390x/gdbstub/test-signals-s390x.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 
 #
 # Test that signals and debugging mix well together on s390x.
diff --git a/tests/tcg/s390x/gdbstub/test-svc.py b/tests/tcg/s390x/gdbstub/test-svc.py
index 17210b4e020..29a0aa0ede4 100644
--- a/tests/tcg/s390x/gdbstub/test-svc.py
+++ b/tests/tcg/s390x/gdbstub/test-svc.py
@@ -1,7 +1,6 @@
 """Test single-stepping SVC.
 
 This runs as a sourced script (via -x, via run-test.py)."""
-from __future__ import print_function
 import gdb
 from test_gdbstub import main, report
 
-- 
2.43.0

Re: [PATCH] tests, scripts: Don't import print_function from __future__

[Daniel P. Berrangé]

On Tue, Aug 19, 2025 at 11:24:09AM +0100, Peter Maydell wrote:
> Some of our Python scripts still include the line
>   from __future__ import print_function
> 
> which is intended to allow a Python 2 to handle the Python 3 print()
> syntax. This particular part of the future arrived many years ago,
> and our minimum Python version is 3.9, so we don't need to keep
> this line around.
> 
> NB: the scripts in tests/tcg/*/gdbstub/ are run with whatever Python
> gdb was built against, but we can safely assume that that was a
> Python 3 because our supported distros are all on Python 3.  In any
> case these are only run as part of "make check-tcg", not by
> end-users.
> 
> Commit created with:
> 
>  sed -i -e '/import print_function/d' $(git grep -l 'from __future__')
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  scripts/userfaultfd-wrlat.py                           | 1 -
>  tests/guest-debug/test_gdbstub.py                      | 1 -
>  tests/tcg/aarch64/gdbstub/test-mte.py                  | 1 -
>  tests/tcg/aarch64/gdbstub/test-sve-ioctl.py            | 1 -
>  tests/tcg/aarch64/gdbstub/test-sve.py                  | 1 -
>  tests/tcg/multiarch/gdbstub/interrupt.py               | 1 -
>  tests/tcg/multiarch/gdbstub/memory.py                  | 1 -
>  tests/tcg/multiarch/gdbstub/sha1.py                    | 1 -
>  tests/tcg/multiarch/gdbstub/test-proc-mappings.py      | 1 -
>  tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py    | 1 -
>  tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py | 1 -
>  tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py  | 1 -
>  tests/tcg/s390x/gdbstub/test-signals-s390x.py          | 1 -
>  tests/tcg/s390x/gdbstub/test-svc.py                    | 1 -
>  14 files changed, 14 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


With regards,
Daniel
-- 
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Re: [PATCH] tests, scripts: Don't import print_function from __future__

[John Snow]

On Tue, Aug 19, 2025 at 6:24 AM Peter Maydell <peter.maydell@linaro.org> wrote:
>
> Some of our Python scripts still include the line
>   from __future__ import print_function
>
> which is intended to allow a Python 2 to handle the Python 3 print()
> syntax. This particular part of the future arrived many years ago,
> and our minimum Python version is 3.9, so we don't need to keep
> this line around.
>
> NB: the scripts in tests/tcg/*/gdbstub/ are run with whatever Python
> gdb was built against, but we can safely assume that that was a
> Python 3 because our supported distros are all on Python 3.  In any
> case these are only run as part of "make check-tcg", not by
> end-users.
>
> Commit created with:
>
>  sed -i -e '/import print_function/d' $(git grep -l 'from __future__')
>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: John Snow <jsnow@redhat.com>

> ---
>  scripts/userfaultfd-wrlat.py                           | 1 -
>  tests/guest-debug/test_gdbstub.py                      | 1 -
>  tests/tcg/aarch64/gdbstub/test-mte.py                  | 1 -
>  tests/tcg/aarch64/gdbstub/test-sve-ioctl.py            | 1 -
>  tests/tcg/aarch64/gdbstub/test-sve.py                  | 1 -
>  tests/tcg/multiarch/gdbstub/interrupt.py               | 1 -
>  tests/tcg/multiarch/gdbstub/memory.py                  | 1 -
>  tests/tcg/multiarch/gdbstub/sha1.py                    | 1 -
>  tests/tcg/multiarch/gdbstub/test-proc-mappings.py      | 1 -
>  tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py    | 1 -
>  tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py | 1 -
>  tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py  | 1 -
>  tests/tcg/s390x/gdbstub/test-signals-s390x.py          | 1 -
>  tests/tcg/s390x/gdbstub/test-svc.py                    | 1 -
>  14 files changed, 14 deletions(-)
>
> diff --git a/scripts/userfaultfd-wrlat.py b/scripts/userfaultfd-wrlat.py
> index 0684be4e044..a61a9abbfcb 100755
> --- a/scripts/userfaultfd-wrlat.py
> +++ b/scripts/userfaultfd-wrlat.py
> @@ -17,7 +17,6 @@
>  # This work is licensed under the terms of the GNU GPL, version 2 or
>  # later.  See the COPYING file in the top-level directory.
>
> -from __future__ import print_function
>  from bcc import BPF
>  from ctypes import c_ushort, c_int, c_ulonglong
>  from time import sleep
> diff --git a/tests/guest-debug/test_gdbstub.py b/tests/guest-debug/test_gdbstub.py
> index 4f08089e6a9..e017ccb55d7 100644
> --- a/tests/guest-debug/test_gdbstub.py
> +++ b/tests/guest-debug/test_gdbstub.py
> @@ -1,7 +1,6 @@
>  """Helper functions for gdbstub testing
>
>  """
> -from __future__ import print_function
>  import argparse
>  import gdb
>  import os
> diff --git a/tests/tcg/aarch64/gdbstub/test-mte.py b/tests/tcg/aarch64/gdbstub/test-mte.py
> index 9ad98e7a54c..f4a7d7b4465 100644
> --- a/tests/tcg/aarch64/gdbstub/test-mte.py
> +++ b/tests/tcg/aarch64/gdbstub/test-mte.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test GDB memory-tag commands that exercise the stubs for the qIsAddressTagged,
>  # qMemTag, and QMemTag packets, which are used for manipulating allocation tags.
> diff --git a/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py b/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
> index a78a3a2514d..2c5c2180319 100644
> --- a/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
> +++ b/tests/tcg/aarch64/gdbstub/test-sve-ioctl.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test the SVE ZReg reports the right amount of data. It uses the
>  # sve-ioctl test and examines the register data each time the
> diff --git a/tests/tcg/aarch64/gdbstub/test-sve.py b/tests/tcg/aarch64/gdbstub/test-sve.py
> index 84cdcd4a32e..7b0489a622b 100644
> --- a/tests/tcg/aarch64/gdbstub/test-sve.py
> +++ b/tests/tcg/aarch64/gdbstub/test-sve.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test the SVE registers are visible and changeable via gdbstub
>  #
> diff --git a/tests/tcg/multiarch/gdbstub/interrupt.py b/tests/tcg/multiarch/gdbstub/interrupt.py
> index 2d5654d1540..4eccdb41b97 100644
> --- a/tests/tcg/multiarch/gdbstub/interrupt.py
> +++ b/tests/tcg/multiarch/gdbstub/interrupt.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test some of the system debug features with the multiarch memory
>  # test. It is a port of the original vmlinux focused test case but
> diff --git a/tests/tcg/multiarch/gdbstub/memory.py b/tests/tcg/multiarch/gdbstub/memory.py
> index 532b92e7fb3..76d75e52512 100644
> --- a/tests/tcg/multiarch/gdbstub/memory.py
> +++ b/tests/tcg/multiarch/gdbstub/memory.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test some of the system debug features with the multiarch memory
>  # test. It is a port of the original vmlinux focused test case but
> diff --git a/tests/tcg/multiarch/gdbstub/sha1.py b/tests/tcg/multiarch/gdbstub/sha1.py
> index 1ce711a402c..3403b82fd4a 100644
> --- a/tests/tcg/multiarch/gdbstub/sha1.py
> +++ b/tests/tcg/multiarch/gdbstub/sha1.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # A very simple smoke test for debugging the SHA1 userspace test on
>  # each target.
> diff --git a/tests/tcg/multiarch/gdbstub/test-proc-mappings.py b/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
> index 6eb6ebf7b17..796dca75f0c 100644
> --- a/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
> +++ b/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
> @@ -1,7 +1,6 @@
>  """Test that gdbstub has access to proc mappings.
>
>  This runs as a sourced script (via -x, via run-test.py)."""
> -from __future__ import print_function
>  import gdb
>  from test_gdbstub import gdb_exit, main, report
>
> diff --git a/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py b/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py
> index 00c26ab4a95..fa36c943d66 100644
> --- a/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py
> +++ b/tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test auxiliary vector is loaded via gdbstub
>  #
> diff --git a/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py b/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py
> index 862596b07a7..b18fa1234fb 100644
> --- a/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py
> +++ b/tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test gdbstub Xfer:siginfo:read stub.
>  #
> diff --git a/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py b/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
> index 4d6b6b9fbe7..49cbc3548f6 100644
> --- a/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
> +++ b/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>  #
>  # Test auxiliary vector is loaded via gdbstub
>  #
> diff --git a/tests/tcg/s390x/gdbstub/test-signals-s390x.py b/tests/tcg/s390x/gdbstub/test-signals-s390x.py
> index b6b7b39fc46..398ad534ebf 100644
> --- a/tests/tcg/s390x/gdbstub/test-signals-s390x.py
> +++ b/tests/tcg/s390x/gdbstub/test-signals-s390x.py
> @@ -1,4 +1,3 @@
> -from __future__ import print_function
>
>  #
>  # Test that signals and debugging mix well together on s390x.
> diff --git a/tests/tcg/s390x/gdbstub/test-svc.py b/tests/tcg/s390x/gdbstub/test-svc.py
> index 17210b4e020..29a0aa0ede4 100644
> --- a/tests/tcg/s390x/gdbstub/test-svc.py
> +++ b/tests/tcg/s390x/gdbstub/test-svc.py
> @@ -1,7 +1,6 @@
>  """Test single-stepping SVC.
>
>  This runs as a sourced script (via -x, via run-test.py)."""
> -from __future__ import print_function
>  import gdb
>  from test_gdbstub import main, report
>
> --
> 2.43.0
>

Re: [PATCH] tests, scripts: Don't import print_function from __future__

[Philippe Mathieu-Daudé]

On 19/8/25 12:24, Peter Maydell wrote:
> Some of our Python scripts still include the line
>    from __future__ import print_function
> 
> which is intended to allow a Python 2 to handle the Python 3 print()
> syntax. This particular part of the future arrived many years ago,
> and our minimum Python version is 3.9, so we don't need to keep
> this line around.
> 
> NB: the scripts in tests/tcg/*/gdbstub/ are run with whatever Python
> gdb was built against, but we can safely assume that that was a
> Python 3 because our supported distros are all on Python 3.  In any
> case these are only run as part of "make check-tcg", not by
> end-users.
> 
> Commit created with:
> 
>   sed -i -e '/import print_function/d' $(git grep -l 'from __future__')
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>   scripts/userfaultfd-wrlat.py                           | 1 -
>   tests/guest-debug/test_gdbstub.py                      | 1 -
>   tests/tcg/aarch64/gdbstub/test-mte.py                  | 1 -
>   tests/tcg/aarch64/gdbstub/test-sve-ioctl.py            | 1 -
>   tests/tcg/aarch64/gdbstub/test-sve.py                  | 1 -
>   tests/tcg/multiarch/gdbstub/interrupt.py               | 1 -
>   tests/tcg/multiarch/gdbstub/memory.py                  | 1 -
>   tests/tcg/multiarch/gdbstub/sha1.py                    | 1 -
>   tests/tcg/multiarch/gdbstub/test-proc-mappings.py      | 1 -
>   tests/tcg/multiarch/gdbstub/test-qxfer-auxv-read.py    | 1 -
>   tests/tcg/multiarch/gdbstub/test-qxfer-siginfo-read.py | 1 -
>   tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py  | 1 -
>   tests/tcg/s390x/gdbstub/test-signals-s390x.py          | 1 -
>   tests/tcg/s390x/gdbstub/test-svc.py                    | 1 -
>   14 files changed, 14 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

Re: [PATCH] tests, scripts: Don't import print_function from __future__

[Peter Maydell]

On Tue, 19 Aug 2025 at 11:24, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> Some of our Python scripts still include the line
>   from __future__ import print_function
>
> which is intended to allow a Python 2 to handle the Python 3 print()
> syntax. This particular part of the future arrived many years ago,
> and our minimum Python version is 3.9, so we don't need to keep
> this line around.
>
> NB: the scripts in tests/tcg/*/gdbstub/ are run with whatever Python
> gdb was built against, but we can safely assume that that was a
> Python 3 because our supported distros are all on Python 3.  In any
> case these are only run as part of "make check-tcg", not by
> end-users.
>
> Commit created with:
>
>  sed -i -e '/import print_function/d' $(git grep -l 'from __future__')
>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---

I'll apply this via target-arm.next, unless anybody would
prefer to take it via a different tree.

thanks
-- PMM