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boundary="------------0NY3NvfZtsKceYaBYPmY7xpG" Message-id: <70130b1b-696b-4a33-afb4-be96ae60d592@eastlink.ca> Date: Mon, 1 Apr 2024 09:30:45 -0700 MIME-version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: unshift To: zsh-users@zsh.org References: Content-language: en-US From: Ray Andrews In-reply-to: X-Seq: 29755 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. --------------0NY3NvfZtsKceYaBYPmY7xpG Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 2024-04-01 09:03, Bart Schaefer wrote: > shift > while [ "$1" ]; do > repeat 1 do > if [ a ]; then b; c; break; fi > if [ d ]; then e; f; break; fi > if [ g ]; then h; i; break; fi > ... > done > shift > done > Ah!  So a 'break' quits the inner loop then hits the 'shift' which has the same effect as putting the shift at the top of the outer loop.  That's very clever.  Never seen 'repeat' used in a real life way.  There are tools which aren't used often, but still very useful when needed. --------------0NY3NvfZtsKceYaBYPmY7xpG Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit

On 2024-04-01 09:03, Bart Schaefer wrote:
shift
while [ "$1" ]; do
  repeat 1 do
    if [ a ]; then b; c; break; fi
    if [ d ]; then e; f; break; fi
    if [ g ]; then h; i; break; fi
    ...
  done
  shift
done
Ah!  So a 'break' quits the inner loop then hits the 'shift' which has the same effect as putting the shift at the top of the outer loop.  That's very clever.  Never seen 'repeat' used in a real life way.  There are tools which aren't used often, but still very useful when needed.
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