Re: `if $(cmd);' is a positive when there's no output from cmd

[Herculano Einloft]

Em (02:25:11), Andreas Schwab escreveu: 


>Herculano Einloft writes: 
> 
>> Hey all, 
>> 
>> $ if $(echo string >/dev/null); then echo true; fi 
>> true 
>> 
>> This should be a syntax error 
> 
>No, it is a perfectly valid command, syntactically. That the command 
>substitution expands to nothing has no significance any more once the 
>command is parsed, just like shell meta characters resulting from 
>expansions are taken literally. 
> 
>Andreas. 
> 

Anyway, I see your point. It can't be a syntax error, since 
of course it parses correctly. 

It's kind of a weird case though, but I guess that's it. 

Thanks all