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boundary="------------qMOvqXcqHKNXjjKKWXMs3AEW" Message-id: <9b1ec75f-3f94-47a3-ad82-baafbeaa6174@eastlink.ca> Date: Mon, 23 Oct 2023 11:21:29 -0700 MIME-version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Variable fails to increment with lvalue error Content-language: en-US To: zsh-users@zsh.org References: <1372623164.1448847.1698079437641@mail.virginmedia.com> From: Ray Andrews In-reply-to: X-Seq: 29317 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: This is a multi-part message in MIME format. --------------qMOvqXcqHKNXjjKKWXMs3AEW Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 2023-10-23 10:03, Roman Perepelitsa wrote: > Let's ask the OP if this would've been helpful. > > Evan, have you read this documentation page? It's available at Beeeutiful!  Only the learner can say if a doc was useful, so ask him :-) My two cents would be: Note further that it would be incorrect to replace tt(val) with tt($val) as the latter is affected by the built-in double quote substitution, so that the arithmetic evaluation does not see the name of the variable but rather it's expanded value. Thus if $val = 0, the latter expression would attempt: 0 = 2 + 1 ... which is obviously nonsense. ... maybe too much hand-holding there? ... --------------qMOvqXcqHKNXjjKKWXMs3AEW Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit


On 2023-10-23 10:03, Roman Perepelitsa wrote:
Let's ask the OP if this would've been helpful.

Evan, have you read this documentation page? It's available at

Beeeutiful!  Only the learner can say if a doc was useful, so ask him :-)

My two cents would be:

Note further that it would be incorrect to replace tt(val) with tt($val) as the latter is affected by the built-in double quote substitution, so that the arithmetic evaluation does not see the name of the variable but rather it's expanded value.  Thus if $val = 0, the latter expression would attempt: 0 = 2 + 1 ... which is obviously nonsense.

... maybe too much hand-holding there? ...

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