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Tue, 02 Feb 2021 12:25:33 -0800 (PST) MIME-Version: 1.0 References: <52dba8e4-2538-7c96-ecd5-66e017ab2b8e@eastlink.ca> In-Reply-To: <52dba8e4-2538-7c96-ecd5-66e017ab2b8e@eastlink.ca> From: Bart Schaefer Date: Tue, 2 Feb 2021 12:25:22 -0800 Message-ID: Subject: Re: array with newlines preserved as literal text To: Ray Andrews Cc: Zsh Users Content-Type: text/plain; charset="UTF-8" X-Seq: 26451 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: Archived-At: On Tue, Feb 2, 2021 at 11:16 AM Ray Andrews wrote: > > I create some nasty output involving a grep search, save to to a > variable, send it to a function which ends up calling 'eval' which > receives the input and executes it like this: > > @ eval "$@" > echo "\nYou (hard return) > will\\nregret'\x0a'\nthe day you '\n' were born." I'm curious why you want to save this in the form of a command to be eval'd rather than just save the argument string? Pretty much any time I start to write an "eval" I go back to make sure I didn't do something wrong earlier. ** Roman's answers are otherwise spot-on. ** Of about 90 instances of "eval" in the contributed Functions directory, 45 are one of these three cases: 1) eval "var_$suffix=value" (there are 36 of these) 2) eval "[[ ... ]]" 3) eval "(( ... ))" Most eval'd assignments could probably be replaced with { typeset var_$suffix=value } (sometimes adding -g).