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boundary="------------JpfYjGah4cTwmXN4Z98gckSX" Message-id: Date: Wed, 3 Apr 2024 06:17:14 -0700 MIME-version: 1.0 User-Agent: Mozilla Thunderbird Content-language: en-US To: Zsh Users From: Ray Andrews Subject: piping surprise X-Seq: 29775 Archived-At: X-Loop: zsh-users@zsh.org Errors-To: zsh-users-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-users-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: This is a multi-part message in MIME format. --------------JpfYjGah4cTwmXN4Z98gckSX Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Speaking of female logic, I stumbled upon this: function bbb () {     vvar=4     print -l "\nShall\nI\ncompare thee\nto a\nsummer's day?" } function aaa () {     local vvar=1     bbb     echo "\nvvar is $vvar"     vvar=2     echo "\n=============\n"     bbb | grep 'a'     echo "\nvvar is $vvar" } %  aaa Shall I compare thee to a summer's day? vvar is 4 ============= Shall compare thee to a summer's day? vvar is 2 ------------------------------------------------------------------ By what thinking does the piping of a function's output thru grep cancel the assignment to the variable?  Do we really want that? --------------JpfYjGah4cTwmXN4Z98gckSX Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Speaking of female logic, I stumbled upon this:

function bbb ()
{
    vvar=4
    print -l "\nShall\nI\ncompare thee\nto a\nsummer's day?"
}    

function aaa ()
{
    local vvar=1
    bbb
    echo "\nvvar is $vvar"
    vvar=2
    echo "\n=============\n"
    bbb | grep 'a'
    echo "\nvvar is $vvar"
}

%  aaa

Shall
I
compare thee
to a
summer's day?

vvar is 4

=============

Shall
compare thee
to a
summer's day?

vvar is 2

------------------------------------------------------------------

By what thinking does the piping of a function's output thru grep cancel the assignment to the variable?  Do we really want that?



 --------------JpfYjGah4cTwmXN4Z98gckSX--