Re: Trailing ^M on Windows

On 11/16, Tony Mechelynck wrote:
>On Windows, when you read a file in Vim and every (or almost every)
>line ends with ^M, it usually means that the last line lacks an
>end-of-line, which made Vim read the whole file as if it were a Unix
>file. This is how I would fix such a file:
>
> :new ++ff=dos filename.ext
> :wq
>
>(this has the side-effect of opening then closing a new window for
>that file) — see ":help ++opt".
>Reading the file with 'fileformat' explicitly set to dos forces both
>CR+LF or LF alone (or nothing at end of file) to be recognised as
>ends-of-lines. Writing the file (which still has 'fileformat' set to
>dos) writes a proper CR+LF Dos/Windows end-of-line at the end of every
>line including the last one, so the next time you read it it will be
>recognised as a Windows file and you won't see those pesky ^M (i.e.
>carriage-return) characters (they are still there but they are part of
>the normal Dos/Window end-of-line).
>
>Or if you want to transmit the file to be read on a Unix system, you
>can replace :wq by :wq ++ff=unix — in that case all lines will get a
>proper LF-only Unix end-of-line, which both Vim (on any platform) and
>any Unix program will be able to recognise properly. In this case the
>^M characters are not even there so no one will see them.
>

Thanks Tony for your reply, but I am afraid I did not properly explain
myself earlier, apologies.

The actual problem I dealing with is trailing ^M when reading from the
OS clipboard; I started with dumping trailing \r\n data on a file only
to make it easier for people to reproduce my problem, but ultimately I
need to figure out how to read from the clipboard without having ^M
added at the end of each line.

So, going back to my experiments, can anyone suggest why, the following
strips trailing ^M:

:read! powershell.exe Get-Clipboard

While this one instead, doesn't?

:let @@ = system('powershell.exe Get-Clipboard') | exe 'normal p'

Also, for those who might wonder: reading from the */+ registers
unfortunately is not an option, as I am trying build a mini-plugin
around "cb" (https://github.com/iamFIREcracker/cb) which is a script
that can work via ssh too where you don't have access to the OS
clipboard; anyway, this is the reason why I am trying to read the
content of the OS clipboard by using a command, `powershell.exe
Get-Clipboard`, instead of using the */+ register.

Let me know if this makes things a little more clear.

Thanks.

--
Matteo Landi
https://matteolandi.net

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