Perhaps the dir= and pattern= arguments could be combined so that
its not necessary to for list.files to paste them together:
list.files("C:/a*.txt", glob=T)
Date: Tue, 25 Nov 2003 07:14:49 -0500
From: Duncan Murdoch <dmurdoch@pair.com>
To: Prof Brian Ripley <ripley@stats.ox.ac.uk>
Cc: <r-devel@stat.math.ethz.ch>
Subject: Re: [Rd] Question about Unix file paths
On Tue, 25 Nov 2003 07:35:57 +0000 (GMT), you wrote:
I think there are some potential issues with doubling separators and final separators on dirs. On Unix file systems /part1//part2 and /path/to/dir/ are valid. However, file systems on Unix may not be Unix file systems: examples are earlier MacOS systems on MacOS X and mounted Windows and Novell systems on Linux. I would not want to assume that all of these combinations worked.
This is something that R could not do reliably by itself. The code I committed checks the final character in the path, and if it's "/", "\" or ":" doesn't add a path separator. However, both "C:" and "C:\" are valid directory names in standard Unix file systems, so the test would do the wrong thing there. I think people who mount strange file systems will just have to expect occasional glitches. The only way I can see around this is to add another argument to list.files() to say whether to add a path separator, but it would be so rarely used that it doesn't seem to be worth the effort. Duncan Murdoch ______________________________________________ R-devel@stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-devel