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GH-133336: Remove reserved `-J` flag for Jython (#133444)

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Adam Turner 2025-05-05 16:09:19 +01:00 • committed by GitHub
parent c336f1c312
commit 4c56563f7a
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5 changed files with 16 additions and 18 deletions
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16
Doc/using/cmdline.rst
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@ -670,6 +670,13 @@ Miscellaneous options
.. versionchanged:: 3.10
Removed the ``-X oldparser`` option.
.. versionremoved:: next
:option:`!-J` is no longer reserved for use by Jython_,
and now has no special meaning.
.. _Jython: https://www.jython.org/
.. _using-on-controlling-color:
Controlling color
@ -694,15 +701,6 @@ output. To control the color output only in the Python interpreter, the
precedence over ``NO_COLOR``, which in turn takes precedence over
``FORCE_COLOR``.
Options you shouldn't use
~~~~~~~~~~~~~~~~~~~~~~~~~
.. option:: -J
Reserved for use by Jython_.
.. _Jython: https://www.jython.org/
.. _using-on-envvars:

2
Doc/whatsnew/2.6.rst
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@ -1747,7 +1747,7 @@ Interpreter Changes
-------------------------------
Two command-line options have been reserved for use by other Python
implementations. The :option:`-J` switch has been reserved for use by
implementations. The :option:`!-J` switch has been reserved for use by
Jython for Jython-specific options, such as switches that are passed to
the underlying JVM. :option:`-X` has been reserved for options
specific to a particular implementation of Python such as CPython,

5
Doc/whatsnew/3.14.rst
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@ -805,6 +805,11 @@ Other language changes
:keyword:`async with`).
(Contributed by Bénédikt Tran in :gh:`128398`.)
* :option:`!-J` is no longer a reserved flag for Jython_,
and now has no special meaning.
(Contributed by Adam Turner in :gh:`133336`.)
.. _Jython: https://www.jython.org/
.. _whatsnew314-pep765:

2
Misc/NEWS.d/next/Core_and_Builtins/2025-05-05-15-33-35.gh-issue-133336.miffFi.rst Normal file
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@ -0,0 +1,2 @@
:option:`!-J` is no longer reserved for use by Jython.
Patch by Adam Turner.

9
Python/getopt.c
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@ -37,7 +37,7 @@ static const wchar_t *opt_ptr = L"";
/* Python command line short and long options */
#define SHORT_OPTS L"bBc:dEhiIJm:OPqRsStuvVW:xX:?"
#define SHORT_OPTS L"bBc:dEhiIm:OPqRsStuvVW:xX:?"
static const _PyOS_LongOption longopts[] = {
/* name, has_arg, val (used in switch in initconfig.c) */
@ -133,13 +133,6 @@ int _PyOS_GetOpt(Py_ssize_t argc, wchar_t * const *argv, int *longindex)
return opt->val;
}
if (option == 'J') {
if (_PyOS_opterr) {
fprintf(stderr, "-J is reserved for Jython\n");
}
return '_';
}
if ((ptr = wcschr(SHORT_OPTS, option)) == NULL) {
if (_PyOS_opterr) {
fprintf(stderr, "Unknown option: -%c\n", (char)option);