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Wed, 11 Nov 2020 10:17:03 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Roman Perepelitsa Date: Wed, 11 Nov 2020 19:16:52 +0100 Message-ID: Subject: Re: Bug with unset variables To: Felipe Contreras Cc: Zsh hackers list Content-Type: text/plain; charset="UTF-8" X-Seq: 47538 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: Archived-At: On Wed, Nov 11, 2020 at 7:03 PM Felipe Contreras wrote: > > And what is the reason why this is not the default? I don't know, I'm fairly new to zsh myself. All I can say is that the behavior of zsh feels more natural to me. > Not only does this behavior differ from all other shells, but > basically all languages. All languages? That seems exaggerated. How about this? int var; How many languages will set `var` to null here? Is it all of them? In the morally-equivalent shell code, bash does but zsh doesn't: typeset -i var echo $var I don't know which of these languages conforms to the majority opinion but neither can claim to do what *all* languages do. FWIW, I rely on this behavior of zsh in my code (namely, that `typeset -i var` sets `var` to 0). Roman.