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Re: [Groff] how to use logical operators
From: |
Werner LEMBERG |
Subject: |
Re: [Groff] how to use logical operators |
Date: |
Tue, 06 Apr 2010 16:32:40 +0200 (CEST) |
> I know this is wrong
> Would someone fix it
>
> .ds a foo
> .ds b bar
> .
> .if d a & d b \{\
> \*[a] \*[b]
> .\}
>
> Richard
>
Solution:
.ds a foo
.ds b bar
.
.if d a \
. if d b \{\
\*[a] \*[b]
.\}
>From groff.info, section `Operators in Conditionals':
Note that these operators [like `d'] can't be combined with other
operators like `:' or `&'; only a leading `!' (without whitespace
between the exclamation mark and the operator) can be used to negate
the result.
Werner