[3.13] Doc: Fix suggested usage of `-X gil=0` in the glossary (GH-125366) (#125382)

Doc: Fix suggested usage of `-X gil=0` in the glossary (GH-125366)

Currently, the "global interpreter lock" entry in the glossary mentions
that `-X gil 0` can be used to disable the GIL [1]. However, this is
invalid; the correct usage should be `-X gil=0`.

    $ python -X gil 0 -c 'print("Hello, world")'
    Fatal Python error: config_read_gil: PYTHON_GIL / -X gil must be "0" or "1"
    Python runtime state: preinitialized

    $ python -X gil=0 -c 'print("Hello, world")'
    Hello, world

[1]: https://docs.python.org/3/using/cmdline.htmlGH-cmdoption-X

(cherry picked from commit a8fa4ad9e9f7aa0cba8b23af2c583d17bb1d1847)

Signed-off-by: Ruoyu Zhong <zhongruoyu@outlook.com>
Co-authored-by: Ruoyu Zhong <zhongruoyu@outlook.com>

diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index d7c712ff938cc3d94dd274743f4d1412567b6d31..3c931a7c2a9392d8e3049f0f35a374c28074c315 100644 (file)
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -585,7 +585,7 @@ Glossary
 
       As of Python 3.13, the GIL can be disabled using the :option:`--disable-gil`
       build configuration. After building Python with this option, code must be
-      run with :option:`-X gil 0 <-X>` or after setting the :envvar:`PYTHON_GIL=0 <PYTHON_GIL>`
+      run with :option:`-X gil=0 <-X>` or after setting the :envvar:`PYTHON_GIL=0 <PYTHON_GIL>`
       environment variable. This feature enables improved performance for
       multi-threaded applications and makes it easier to use multi-core CPUs
       efficiently. For more details, see :pep:`703`.