On Wed, Jan 9, 2013 at 6:09 AM, Robert P. J. Day <rpj...@crashcourse.ca>wrote:
> is there a *preferred* format for setting BBMASK? in my travels, > i've seen variations such as: > > "dir/dir" > "dir/dir/" > "dir/dir/*" > ".*/dir/dir" > > and so on. is there an aesthetic preference of any kind? > It's just a regular expression, so as long as it matches, we're fine, but that said, there are certain things to keep in mind: - First, 'dir/dir' will also match 'foodir/dirbar', which while an unlikely case, is something you should avoid, and this is what having the leading/trailing slashes helps you avoid. It's not as unlikely as it seems, also. Consider something like recipes/libfoo/ and recipes/libfoobar/ - It uses re.search, not re.match, so the leading .* is unnecessary - /* will only match a series of slashes, not "anything" — that sounds like a case of someone thinking it's a glob when it's actually a regex. further, without a ^ to anchor the end of the expression, there's no need to match anything past what you're searching for (that is, no need to do something like dir/dir/.*) So given those points, I'd suggest the form of BBMASK = "/dir/dir/" — note the leading and trailing slashes to ensure it doesn't match anything that doesn't exactly match those directories. -- Christopher Larson
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