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Fri, 30 Apr 2021 10:43:51 -0700 (PDT) MIME-Version: 1.0 References: <20210430065123.zjq2mpanmtbkkgfl@chazelas.org> <20210430081716.vlez4jbb7c72vorf@chazelas.org> In-Reply-To: <20210430081716.vlez4jbb7c72vorf@chazelas.org> From: Bart Schaefer Date: Fri, 30 Apr 2021 10:43:40 -0700 Message-ID: Subject: Re: tilde expansion after quoted : in assignments To: Zsh hackers list Content-Type: text/plain; charset="UTF-8" X-Seq: 48753 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: On Fri, Apr 30, 2021 at 1:18 AM Stephane Chazelas wrote: > > Tilde expansion is only meant to be done after unquoted : per > POSIX. Though I can't imagine being a problem in practice. I was expecting this to mean that colons in e.g. $PATH could be escaped with a backslash, but that's not the case. Therefore I suppose it's so that one can do a=${this}\:${that} without having to worry whether $that begins with a tilde, while simultaneously allowing ${that} to be whitespace-split or to itself contain unquoted colons. Although again that seems a pretty weird case since the only reason to care whether those colons are quoted is if they are followed by more tildes and I can't imagine what splitting makes sense in that context.