New submission from Mark Dickinson <dicki...@gmail.com>: Problem: the standard C character handling functions from ctype.h (isalpha, isdigit, isxdigit, isspace, toupper, tolower, etc.) are locale aware, but for almost all uses CPython needs locale-unaware versions of these.
There are various solutions in the current source: - there's a file Include/bytes_methods.h which provides suitable ISDIGIT/ISALPHA/... macros, but also undefines the standard functions. As it is, it can't be included in Python.h since that would break 3rd party code that includes Python.h and also uses isdigit. - some files have their own solution: Python/pystrtod.c defines its own (probably inefficient) ISDIGIT and ISSPACE macros. - in some places the standard C functions are just used directly (and possibly incorrectly). A gotcha here is that one has to remember to use Py_CHARMASK to avoid errors on some platforms. (See issue 3633 for an example.) It would be nice to clean all this up, and have one central, efficient, easy-to-use set of Py_ISDIGIT/Py_ISALPHA ... locale-independent macros (or functions) that could be used safely throughout the Python source. ---------- components: Interpreter Core keywords: easy messages: 86170 nosy: eric.smith, marketdickinson priority: normal severity: normal stage: needs patch status: open title: Rationalize isdigit / isalpha / tolower / ... uses throughout Python source type: feature request versions: Python 2.7, Python 3.1 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue5793> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
