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bh=6+ikHbE6Ma+1PlDms65Z2OCZdGbCzWRcl0lZVWgaU8k=; b=wXjp+z0frozwhuV6hY3XlqFHQkwlhj3Ad/hmnH0kxvMHS4XDmMUd4BPtBXcqDwkItN BHAO/sjFKsaecUxS0nGFPf4AKztah6gQjyJ7Mx90UXOISRadrkCUhWFCLUrdTJ2dgMwn BLP8IVTFs4EWY4N0wZ7k/5T9UOKa4nA0Ko3ouVlWSpjTrjZjKuLulcbGW9tDx5NfoXNb oOTuBmSJrIkG02uwdb4Ya4UlMK4urLit24B73yxumvPHgNN3NA4jY4IMHHbJzaegM9OP 8EiCY3UqPvvZ9QRS7eCXisCeiL5oxbb9F4IMMuxgsmuUmhHd2a4GiEKEmPDv24jehixn F1tQ== X-Gm-Message-State: AOJu0Yx+ZV52ArZ/zoV1q/uvKjWDOjCcB0bR1GjYgQVOETSH++w9Myok jW8KaOW3n2imlS0BRn2a9yNDKOH4XZRlphu8YvMpZg== X-Google-Smtp-Source: AGHT+IEiBRF+S8xM4E8YyDmPGLSFCd+jRZhfSbdmu2Iz/ttvbgXNuJKUVyIEwIrLHOBigJgGUSR6ueQVmbNNhSX8CRA= X-Received: by 2002:a17:906:410e:b0:9bf:b022:dc7 with SMTP id j14-20020a170906410e00b009bfb0220dc7mr324365ejk.48.1699661606561; Fri, 10 Nov 2023 16:13:26 -0800 (PST) MIME-Version: 1.0 References: <5792009a-ef88-428c-be93-feeaa23aad7e@app.fastmail.com> In-Reply-To: From: Bart Schaefer Date: Fri, 10 Nov 2023 16:13:15 -0800 Message-ID: Subject: Re: special characters in file names issue To: Roman Perepelitsa Cc: =?UTF-8?Q?Lawrence_Vel=C3=A1zquez?= , linuxtechguy@gmail.com, zsh-users@zsh.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Seq: 29344 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: In reversed order ... On Fri, Nov 10, 2023 at 12:38=E2=80=AFPM Roman Perepelitsa wrote: > > On Fri, Nov 10, 2023 at 6:03=E2=80=AFPM Bart Schaefer wrote: > > > > -v has to evaluate the subscript to find the array element [...] > > Why does it have to evaluate the subscript? `unset` does not do it, > why would [[ -v .. ]] be different? The shortest possible answer is that [[ -v ... ]] will autoload the parameter before reporting whether it is set, whereas unset just acts on the current state. % typeset -p aliases % unset 'aliases[run-help]' zsh: aliases: assignment to invalid subscript range % [[ -v aliases[run-help] ]] && echo yes yes % However, I doubt Oliver was specifically thinking about that seven years ago when he implemented [[ -v ... ]]. > On Fri, Nov 10, 2023 at 5:34=E2=80=AFPM Lawrence Vel=C3=A1zquez wrote: > > > > Subscripted arguments to [[ -v ... ]] appear to undergo a second > > round of expansions [...] > > There is also a scarier version of this, which causes execution of an > external command when I don't expect it. This is why the new named-references code evaluates subscripts with NO_EXEC temporarily in effect. > Is this intended? That answer is probably lost to history. If we presently believe that "no" is the best answer, we can use the NO_EXEC trick for [[ -v ... ]] as well, although that would mean that a bit of factored-out code that's currently called only from [[ ]] could never be called from anywhere else.