Cyker Way <cyker...@gmail.com> added the comment:
Thank you for confirmation. Knowing it is not fully POSIX-compliant helps with understanding. I'm asking this because I had interoperability issues writing python scripts providing shell-like utilities for filename expansion and the result may surprise users. The glibc fnmatch provides a flag named `FNM_PATHNAME`, which is missing in the python fnmatch implementation. So I think there is currently no way to tell the python library if we are matching a filename or not. All right so this is not a bug, but probably a good enhancement. ## TLDR This is what POSIX says **for filename expansion**, in section 2.13.3: <http://pubs.opengroup.org/onlinepubs/9699919799.2008edition/> > when pattern matching notation is used for filename expansion: > > 1. The <slash> character in a pathname shall be explicitly matched by > using one or more <slash> characters in the pattern; it shall neither be > matched by the <asterisk> or <question-mark> special characters nor by a > bracket expression. <slash> characters in the pattern shall be identified > before bracket expressions; thus, a <slash> cannot be included in a pattern > bracket expression used for filename expansion. If a <slash> character is > found following an unescaped <left-square-bracket> character before a > corresponding <right-square-bracket> is found, the open bracket shall be > treated as an ordinary character. For example, the pattern "a[b/c]d" does not > match such pathnames as abd or a/d. It only matches a pathname of literally > a[b/c]d. Currently python fnmatch.fnmatch gives: >>> fnmatch('abd', 'a[b/c]d') True >>> fnmatch('a/d', 'a[b/c]d') True >>> fnmatch('a[b/c]d', 'a[b/c]d') False Ideally we can call `fnmatch('a/d', 'a[b/c]d', fnm_pathname=True)` to correct the behavior. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue35314> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
