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Wed, 25 Jan 2023 08:44:11 -0800 (PST) MIME-Version: 1.0 References: <0dc71450-d082-93da-52f8-d4e6b97199af@eastlink.ca> <3b93f68e-d090-15c0-c15e-a3d09d702f76@eastlink.ca> <07323898-9985-4e9f-8b54-c08fd8510fe8@app.fastmail.com> <08102bc6-b331-504f-fcd5-28fa3cdb0e2f@eastlink.ca> <00818033-2566-52b3-33a9-62591a93d707@eastlink.ca> In-Reply-To: From: Roman Perepelitsa Date: Wed, 25 Jan 2023 17:43:59 +0100 Message-ID: Subject: Re: path PATH To: Ray Andrews Cc: zsh-users@zsh.org Content-Type: text/plain; charset="UTF-8" X-Seq: 28790 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 Wed, Jan 25, 2023 at 5:38 PM Ray Andrews wrote: > > So what would be a complete list of unset > params? This is close: > > $ typeset -mp "*" | grep -e "=( )$" -e "=''$" -e "=0$" > > typeset ZLE_LINE_ABORTED='' > [...] > typeset -i10 EGID=0 All of these parameters are set. Here's how an unset parameter looks like: % typeset -p blah typeset: no such variable: blah % [[ -v blah ]] || print unset unset % (( ${+blah} )) || print unset unset You can print the list of all unset parameters but the output will be infinite. To do that, you start by enumerating all one-character names and checking them against `[[ -v ]]`. Proceed with two-character names, etc. Roman.