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Date:	Thu, 19 Feb 2004 23:51:10 -0800
From:	Yitzchak Scott-Thoennes <sthoenna AT efn DOT org>
To:	cygwin AT cygwin DOT com
Subject:	Re: search and replace tool
Message-ID:	<20040220075109.GA132@efn.org>
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On Fri, Feb 20, 2004 at 10:02:03AM +0300, Egor Duda wrote:
> huh? what do you mean "in-place"? linux writes new file to new place, it 
> just deletes .bak file afterwards, unlike cygwin.
> 
> deo AT paltus:~$ echo aaa >xxx
> deo AT paltus:~$ ls -i xxx
>  408096 xxx
> deo AT paltus:~$ perl -i -pe 's/aaa/bbbb/' xxx
> deo AT paltus:~$ ls -i xxx
>  408074 xxx
> deo AT paltus:~$ cat xxx
> bbbb

That doesn't ever create a backup file or a temporary file.  It opens
xxx for read, unlinks it, opens xxx for writing, then reads from the
original handle and writes to the second handle.  This is AFAIUI
impossible on windows, but possible on things like unix and VMS (where
the unlink is skipped because of the automatic versioning).

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