Re: Documentation Error

[G. Branden Robinson]

At 2022-06-08T12:05:06-0500, mcmuffin6o wrote:
> In section 3.5.3 Shell Parameter Expansion:
> 
> In the sixth paragraph it correctly states that "Bash tests for a
> parameter that is unset *or* null" when you use the colon. It later
> attempts to restate this but fails by saying "if the colon is
> included, the operator tests for both parameter's existence *and* that
> its value is not null"

This is an application of DeMorgan's Law to English prose.  I will
translate the clauses into pseudo-C.

"Bash tests for a parameter that is unset *or* null"

if ((!set) || (!has_content))

"the operator tests for both parameter's existence *and* that its value
is not null"

if (set && has_content)

Regards,
Branden

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