Re: exclusion in file patterns

Tim Hemel wrote:

> It would definitely solve my recursive file selection, except for the
> exclusion, but for that you could use another operator ('-' ?).
> 
> FILES= `tree("www") - tree("CVS") - tree("*.bak")`

It's not difficult to add an argument to "tree" to define an exclude
pattern.  Also avoids having to walk the tree three times.

> But then we have another problem, what is meant by *.bak? Just the
> .bak files in the current directory, or everything that end in .bak ?

Both are needed.

> I would suggest calling tree something like rglob (recursive glob), if its
> arguments are going to include wildcards.

rglob() sounds like something that accepts "**" for a pattern:
rglob("**/*.bak").  It's OK for how you use it above, but when adding an
"exclude" argument I suppose it's better not to use "glob" in the name.
It's quite an obscure name anyway.

> Too bad that the - operator is not defined for lists in Python, but we can
> probably overload it.

There is probably a good reason why it wasn't defined in Python.

It's quite easy to do all this with one tree() function that takes
multiple arguments.

> The rglob/tree function definitely is useful, I think.

I suppose so.  Something similar was recently mentioned on the SCons
maillist.

> > "Software is like sex... it's better when it's free."
> > 		-- Linus Torvalds, initiator of the free Linux OS
> > Makes me wonder what FSF stands for...?
> 
> Where can I sign up?

Ask RMS!

- Bram

-- 
This message contains 78% recycled characters.

 /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
///          Creator of Vim - Vi IMproved -- http://www.Vim.org          \\\
\\\              Project leader for A-A-P -- http://www.A-A-P.org        ///
 \\\  Help AIDS victims, buy here: http://ICCF-Holland.org/click1.html  ///


-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Welcome to geek heaven.
http://thinkgeek.com/sf