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Re: RFE: new syntax for command substitution to keep trailing newlines?


From: pepa65
Subject: Re: RFE: new syntax for command substitution to keep trailing newlines?
Date: Thu, 28 Jan 2021 08:58:56 +0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 28/01/2021 03.29, Léa Gris wrote:
> Now if you want to preserve all the newlines you can use an ASCII EOF
> character (formerly Ctrl + Z) that is unlikely to be part of a legit
> string:
> 
> a=$(printf $'hello\n\n\n\32'); a=${a%$'\32'}; declare -p a

When doing this there is no subshell involved so newlines are preserved:

printf -v a $'hello\n\n\n'

(I guess that wasn't your point...)

Peter



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