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Sat, 17 Dec 2022 12:49:57 -0800 (PST) MIME-Version: 1.0 References: <46161d8a-c177-4134-836e-592e5c048887@app.fastmail.com> <902fb047-3435-89a3-e7ea-74e74075c2c6@eastlink.ca> <09d09690-08c8-4499-9011-9c45d7676f52@app.fastmail.com> <81952d4b-3ead-f912-f987-fe9a37dbd256@eastlink.ca> <27c7320e-7677-1268-3bf9-59939aad067e@eastlink.ca> <2c606231-ae9c-a7cc-8e35-e018ccead14e@eastlink.ca> In-Reply-To: <2c606231-ae9c-a7cc-8e35-e018ccead14e@eastlink.ca> From: Bart Schaefer Date: Sat, 17 Dec 2022 12:49:45 -0800 Message-ID: Subject: Re: uninvited members of associative array To: Ray Andrews Cc: zsh-users@zsh.org Content-Type: text/plain; charset="UTF-8" X-Seq: 28578 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: On Sat, Dec 17, 2022 at 12:31 PM Ray Andrews wrote: > > I don't understand > the difference between '-A' and '+A' maybe that's part of it The difficulty here (unfortunately) is that "-A" doesn't always mean the same thing. "typeset -a" means a normal array and "typeset -A" (or "local" in either case) means an associative array. "set -a" was taken (short for "setopt ALL_EXPORT" from sh compatibility) so "set -A" means "assign to array" where "array" may be either normal or associative. But if the array doesn't already exist, it is implicitly created as a normal array. So you must pre-declare names with "local -A" or similar if you want them treated as associative.