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| author | Y5 <124019959+y5c4l3@users.noreply.github.com> | 2024-09-23 06:58:14 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-09-23 06:58:14 (GMT) |
| commit | d3e79d75d164c338a64fd66edb26e69c501cee58 (patch) | |
| tree | a656cbb8021897baf9e2f1080247c235f54259cb /Doc/library/re.rst | |
| parent | 2e8c769481d5729d86be8c6cff5881c4c5fbb8d2 (diff) | |
| download | cpython-d3e79d75d164c338a64fd66edb26e69c501cee58.zip cpython-d3e79d75d164c338a64fd66edb26e69c501cee58.tar.gz cpython-d3e79d75d164c338a64fd66edb26e69c501cee58.tar.bz2 | |
gh-124130: Notes on empty string corner case of category `\B` (#124133)
Signed-off-by: y5c4l3 <y5c4l3@proton.me>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Diffstat (limited to 'Doc/library/re.rst')
| -rw-r--r-- | Doc/library/re.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Doc/library/re.rst b/Doc/library/re.rst index efb2722..9db6f1d 100644 --- a/Doc/library/re.rst +++ b/Doc/library/re.rst @@ -572,6 +572,12 @@ character ``'$'``. Word boundaries are determined by the current locale if the :py:const:`~re.LOCALE` flag is used. + .. note:: + + Note that ``\B`` does not match an empty string, which differs from + RE implementations in other programming languages such as Perl. + This behavior is kept for compatibility reasons. + .. index:: single: \d; in regular expressions ``\d`` |