New submission from Thomas Jollans <t...@tjol.eu>: string.Template matches a $identifier with the regex [_a-z][_a-z0-9]* and re.IGNORECASE. This matches S, ſ and s, but not ß. https://github.com/python/cpython/blob/master/Lib/string.py#L78 (this code came up on python-dev)
The docs specify "any case-insensitive ASCII alphanumeric string (including underscores) that starts with an underscore or ASCII letter.". This includes S and s, but neither ſ nor ß. https://docs.python.org/3/library/string.html#template-strings The docs refer to PEP 292, which specifies "By default, 'identifier' must spell a Python identifier [...]" This includes S, ſ, s and ß. https://www.python.org/dev/peps/pep-0292/ It's not entirely clear what the correct behaviour is (probably accepting any Python identifier). In any case, the current behaviour of string.Template is a bit silly, but changing it might break stuff. ---------- components: Library (Lib) messages: 303577 nosy: tjollans priority: normal severity: normal status: open title: string.Template: cods, docs and PEP all disagree on definition of identifier type: behavior versions: Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue31669> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
