On Friday, February 14, 2014 11:00:30 PM UTC+4, Benjamin Klein wrote:
> When I echom something from the command line using system():
>
> :echom system("echo \"testing\"")
>
> I get a ^@ (null) at the end of the result:
>
> testing^@
> If I instead use echo, which doesn’t translate unprintable characters but
> displays them:
>
> :echo system("echo \"testing\")
>
> I get the result of the command line command with an added newline:
>
> testing
>
> This of course normally makes sense at the command line, but when I’m
> returning output taken from the command line as a Vim message I don’t want an
> unnecessary newline. I can eliminate it by returning the first item in a List
> made from split() used on the return value from system() with "\n" as the
> pattern (or perhaps by substitute-ing newlines with ''), but is there a
> simpler way to do this?
Usually if you know for sure that command will output trailing newline (which
you do in something like 90% of cases) you just use `system()[:-2]`.
`substitute(system(), "\n*$", '', '')` if you want to trim any amount of
newlines (like `str.rstrip('\n')` in python).
>
> Thanks!
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