gh-91760: Deprecate group names and numbers which will be invalid in future #91794
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…id in future Only sequence of ASCII digits not starting with 0 (except group 0) will be accepted as a numerical reference. The group name in bytes patterns and replacement strings could only contain ASCII letters and digits and underscore.
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Only sequence of ASCII digits not starting with 0 (except group 0) will be
accepted as a numerical reference.
The group name in bytes patterns and replacement strings could only
contain ASCII letters and digits and underscore.
Closes #91760.