Not sure about that

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Post #36,661

by hnick

4/27/02 10:56:33 AM

Not sure about that

I agree that Windows does not have a mechanism for special characters, which is why Cygwin works correctly.
In unix you can use wild card characters in names if you escape them.
Consistant behavior requires that unescaped wild cards be expanded and passed to the calling program as arguements. *.whatever in an empty directory expands to null. Either touch is inconsistant with the rest of the usual unix utilities (read broke) or the shell(s) are broke in this instance.
If you forgive broken behaviour because it's been around a long time, then I guess Windows is really OK then, hmmm?

/ducks, snickering, and runs

Hugh

Post #36,663

by morganek

4/27/02 11:52:08 AM

Pathname Expansion

I think the big difference here is that the Unix shells are responsible for pathname expansion. For instance (in bash on Linux):


sh-2.04$ ls -l DER*pdf
-rw-r--r--   1 morganek users        9720 Oct 16  2001 DEReport.pdf
sh-2.04$ set -o noglob
sh-2.04$ cp DER*pdf mtestme.pdf
cp: DER*pdf: No such file or directory
sh-2.04$ set +o noglob
sh-2.04$ cp DER*pdf mtestme.pdf
sh-2.04$ ls -l mtestme.pdf 
-rw-r--r--   1 morganek users        9720 Apr 27 11:47 mtestme.pdf
sh-2.04$

What is significant here is that the command, "cp", does not do pathname expansion. The expansion is handled by bash and passed to cp.

On the Windows side, the COMMAND.COM/CMD.EXE shells do not do expansion when parsing input to determine what to load. As an example, the XCOPY.EXE (or .COM--I forget) executable is responsible for expanding wildcards.

-Mike

Mad bash behaviour - (pwhysall) - (10) - April 26, 2002, 02:38:57 AM EDT

Re: Mad bash behaviour - (Steve Lowe) - April 26, 2002, 04:02:25 AM EDT

Hmmm.... some do.. some don't - (hnick) - April 26, 2002, 08:00:49 AM EDT

Planned insane POSIX bash behaviour - (folkert) - (2) - April 26, 2002, 08:22:02 PM EDT

Not sure about that - (hnick) - (1) - April 27, 2002, 10:56:33 AM EDT

Pathname Expansion - (morganek) - April 27, 2002, 11:52:08 AM EDT

Not Broken - (morganek) - (2) - April 27, 2002, 11:36:11 AM EDT

Thanks - (pwhysall) - (1) - April 27, 2002, 01:04:32 PM EDT

No it won't - (drewk) - April 29, 2002, 10:03:40 AM EDT

you can also touch * - (boxley) - (1) - April 29, 2002, 12:00:11 PM EDT

I can imagine the conversation: - (morganek) - April 29, 2002, 12:28:21 PM EDT

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