From: Robert Klemme <shortcutter@...>
Date: 2007-07-19T22:37:08+09:00
Subject: Re: What's going on here with gsub?

2007/7/19, Peter Bailey <pbailey@bna.com>:
> Stefan Rusterholz wrote:
> > Peter Bailey wrote:
> >> Hi,
> >> I'm baffled by this problem. If I define a single file, I can use gsub
> >> to create the same name, with different extensions. But, when I do it
> >> with a list of files, it doesn't work. Why is the code below giving me
> >> nothing but .tif files, when, I'm asking for three different file types:
> >> tif, png, and pdf?
> >>
> >> Thanks,
> >> Peter
> >
> > "TIF" and "tif" is not the same. You probably want the //i switch which
> > makes regexen case insensitive. Also I suggest you anchor your regexp,
> > else you might have unwanted results. E.g. gsub(/\.tif\z/i, ...)
> >
> > Regards
> > Stefan
>
> Thanks, Stefan. You're right. I've been a Windows guy so long that I
> overlook the case stuff sometimes. Thanks a lot!

Some other remarks: in your case sub is sufficient and you should
probably anchor the expression at the end - just to cover cases where
the sequence occurs somewhere in between.

Kind regards

robert