Wednesday, January 30, 2013

Re: Windows ALT characters

On Wednesday, January 30, 2013 7:51:01 AM UTC-6, Tony Mechelynck wrote:
> On 30/01/13 02:53, John McGlynn wrote:
>
> > Hi Vim,
>
> >
>
> > I have a load of csv files in which some rows have an arrow at the end.
>
> > The arrow seems to have been made using Windows ALT 26.
>
> >
>
> > It shows up in Vim as ^Z^M.
>
> >
>
> > Can anyone tell me how to remove these pesky objects?
>
> >
>
> > Thanks,
>
> >
>
> > John
>
>
>
> You already got several replies about how to remove them.
>
>
>
> Those Ctrl-Z characters are a leftover from DOS "ASCII" mode, where they
>
> signaled end-of-file. When reading a file, DOS used to disregard the
>
> Ctrl-Z and everything after it. This peculiarity was used when typing in
>
> a file at the console (to be read via a < redirection): the user typed
>
> Ctrl-Z to signal the end of data and come back to the command prompt.
>
>
>
> The Ctrl-M is a carriage return, which may have been added by some
>
> program unaware of the special meaning of the Ctrl-Z.
>
>

In the past, I discovered the hard way that Perl (at least, ActivePerl on Windows) also treats the CTRL-Z as "end of file" and stops processing. Certainly removing them is a good idea.

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