David Abrahams wrote:
Daryle Walker wrote:
On Jun 27, 2008, at 12:17 PM, Beman Dawes wrote:
Rene Rivera wrote:
Just noticed this directory name: libs/filesystem/test/vc++.boost.filesystem Is "+" safe to use across file systems? No, not in general.
Hm, actually I'm fairly sure more than one "." is not safe. For example in the MVS systems? IIRC, there are several legacy file systems that don't support multiple periods.
I'll change the offending name. It was one I use internally, and decided to add to SVN without reconsidering the naming. So, should we add a rule about non-ISO9660 names to our file-checking program, and maybe the subversion pre-commit hook (as Dave said)?
I vote yes
We need to decide what our standard is first. ISO-9660:1999 limits: * Allowable characters characters are uppercase A-Z, 0-9, and underscore. Popular operating systems extend these to at least lowercase letters, but usually allow more punctuation characters. * File names shall not include spaces. * File names shall not start or end with the dot character. * File names shall not have more than one dot. * Directory names shall not use dots at all. If we allow lowercase letters, and add a restriction that the first character has to be a letter or number, but otherwise stick with ISO-9660:1999, 1.35.0 would have 773 violations. See http://mysite.verizon.net/beman/temp.html If we also allow '-', that would cut the violations to 130. See http://mysite.verizon.net/beman/temp1.html Note that a-z, A-Z, 0-9, dot, hyphen, and underscore correspond to the POSIX portable file name requirements. So that seems to be a natural cut-off point for the allowable characters. Do we also want to drop the "File names shall not have more than one dot" and/or "Directory names shall not use dots at all" requirements? Have we have ever had a complaint about multiple dots in file or directory names? --Beman