Re: Problems using value returned by external command

On 02/04/11 04:18, Tony Mechelynck wrote:
> On 02/04/11 03:57, Spiros Bousbouras wrote:
>> The following on GNU/Linux with vim version 7.1
>>
>> prompt> cat myscript
>> #!/bin/sh
>> echo 1
>>
>> prompt> cat myscript.vim
>> function! Check()
>> let l:r = system("./myscript")
>> if l:r == "1"
>> echo "Good"
>> else
>> echo "Length of l:r is" strlen(l:r)
>> echoerr "l:r is" l:r
>> endif
>> endfunction
>>
>> I start a vim session and do
>>
>> :source myscript.vim
>> :echo Check()
>>
>> and get
>>
>> Length of l:r is 2
>> Error detected while processing function Check:
>> line 6:
>> l:r is 1^@
>> 0
>>
>> Replacing inside Check()
>> if l:r == "1"
>> with
>> if l:r == "1\000"
>> doesn't make any difference.
>>
>> Is this a bug ?
>>
>
> I don't know if it's a bug or a feature, but here I get the following:
>
> :echo (system('echo 1') == "1")
> 0
> :echo (system('echo 1') == "1\000")
> 0

Oops: forgot to close the parens below

>
:echo (system('echo 1') == 1)
> 1
> :echo (system('echo 1 2 3') == 1
:echo (system('echo 1 2 3') == 1
> 1
>
> Note that in the latter two cases, Vim's string-to-integer conversion
> steps in.
>
>
> Best regards,
> Tony.
--
A non-vegetarian anti-abortionist is a contradiction in terms.
-- Phyllis Schlafly

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