Re: ${parameter+word} not documented in bash.info or bash(1)

[Paul Jarc]

"Martin Schwenke" <martin@meltin.net> wrote:
> Neither bash.info or bash(1) documents parameter expansion of the
> form:
>
>   ${parameter+word}

It's documented, but it's easy to miss.  Just before the list of
parameter expansion forms is this paragraph:

       In each of the cases below, word is subject to tilde expansion,
       parameter expansion, command substitution, and arithmetic
       expansion.  When not performing substring expansion, bash tests
       for a parameter that is unset or null; omitting the colon
       results in a test only for a parameter that is unset.


paul