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Date: Wed, 7 Jun 1995 12:10:17 +0200
From: bas@phys.uva.nl (Bas V. de Bakker)
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Subject: Re: Small bug in zsh 2.6beta9
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Zvi Har'El <rl@leeor.technion.ac.il> writes:

>> >     if (ornext ^ ret) {
>> > 
>> > should read
>> > 
>> >     if (ornext ^ (ret!=0)) {

> YOU were right all the time. The two lines of code are
> identical. Perhaps the idiom of checking if(a) rather then if(a!=0)
> is not clear to people who are not seasoned C programmers, but
> personally I prefer your original code.

I haven't really followed the discussion, but although "if (a)" and
"if (a!=0)" are equivalent, the two lines above certainly aren't.  If
ornext == 1 and ret == 2 then

ornext ^ ret == 3

but

ornext ^ (ret != 0) == 0

Bas.