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	Mon,  9 Dec 2013 10:20:52 +0200 (EET)
From: Tomi Ollila <tomi.ollila@iki.fi>
To: David Bremner <david@tethera.net>, notmuch@notmuchmail.org
Subject: Re: [PATCH 4/4] test: give unique timestamps to messages
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Date: Mon, 09 Dec 2013 10:20:51 +0200
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On Mon, Dec 09 2013, David Bremner <david@tethera.net> wrote:

> Tomi Ollila <tomi.ollila@iki.fi> writes:
>
>>>      if [ -z "${template[date]}" ]; then
>>> -	template[date]="Fri, 05 Jan 2001 15:43:57 +0000"
>>> +	template[date]=$(date -Ru -d@$((978709437 - gen_msg_cnt)))
>>
>> I am afraid this is not portable (although not sure). This could work:
>>
>> _s=$((3599 - gen_msg_cnt))
>> template[date]="Fri, 05 Jan 2001 15:$((_s / 60)):$((_s % 60)) +0000"
>>
>
> How about this instead?
>
> diff --git a/test/test-lib.sh b/test/test-lib.sh
> index 792e477..22a4d7f 100644
> --- a/test/test-lib.sh
> +++ b/test/test-lib.sh
> @@ -356,7 +356,8 @@ generate_message ()
>      fi
>  
>      if [ -z "${template[date]}" ]; then
> -	template[date]=$(date -Ru -d@$((978709437 - gen_msg_cnt)))
> +	template[date]=$(TZ=UTC printf "%(%a, %d %b %Y %T %z)T\n" \
> +			$((978709437 - gen_msg_cnt)))
>      fi

$ printf "%(%a, %d %b %Y %T %z)T\n" 978709437
printf: %(: invalid directive
zsh: exit 1

$ bash -c 'printf "%(%a, %d %b %Y %T %z)T\n" 978709437'
Fri, 05 Jan 2001 17:43:57 +0200


Using bash builtin is fine by me! :D

BTW: this works too:

bash -c 'TZ=UTC printf -v foo[bar] "%(%a, %d %b %Y %T %z)T\n" 978709437; echo ${foo[bar]}'


Tomi