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From: Greg Wooledge <wooledg@eeg.ccf.org>
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Subject: Re: Arithmetic evaluation of negative numbers with base prefix
Date: Tue, 18 Jun 2019 11:20:13 -0400
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On Tue, Jun 18, 2019 at 10:27:48AM -0400, Chet Ramey wrote:
> $ ksh93 -c 'echo ${.sh.version}'
> Version ABIJM 93v- 2014-09-29
> $ ksh93 -c 'echo $(( 10# ))'
> ksh93:  10# : arithmetic syntax error

I guess most Linux distributions are not shipping the 2014 version of
ksh93 yet...?

wooledg:~$ ksh -c 'echo $(( 10# ))'
0
wooledg:~$ dpkg -l ksh | tail -1
ii  ksh            93u+20120801-3.4 amd64        Real, AT&T version of the Korn shell
wooledg:~$ ksh -c 'echo ${.sh.version}'
Version AJM 93u+ 2012-08-01

Seems kinda weird to continue calling it "ksh93" if it's being changed,
but I don't make the decisions.