Date: Fri, 11 Jan 2019 12:46:51 -0800 From: Enji Cooper <yaneurabeya@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: Devin Teske <dteske@freebsd.org>, "Rodney W. Grimes" <rgrimes@freebsd.org>, Lars Engels <lme@freebsd.org>, src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r342945 - in head: tools/build/mk usr.sbin/bluetooth usr.sbin/bluetooth/bluetooth-config Message-ID: <A5D749B2-580D-403A-9305-697D31ED2190@gmail.com> In-Reply-To: <CANCZdfpD75%2BkSdydgtLPBeYh4Kut-pMbPSBv44pRdrY-ZAZzoQ@mail.gmail.com> References: <201901111916.x0BJGcLG022599@pdx.rh.CN85.dnsmgr.net> <12293ACC-4C9C-4BFB-A04B-85D43AFA0837@FreeBSD.org> <CANCZdfpD75%2BkSdydgtLPBeYh4Kut-pMbPSBv44pRdrY-ZAZzoQ@mail.gmail.com>
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> On Jan 11, 2019, at 12:36 PM, Warner Losh <imp@bsdimp.com> wrote:
...
> I talked about this at BSDCan in June. $foo is preferred (there
> *is* a difference) and, as you say, if a file is consistently ${foo}
> then it is fine.
>=20
> I prefer {} because $foo:bar doesn't work while ${foo}:bar does.
I think the form Warner brings up makes more sense to sh(1) newcomers =
who might not know the intricacies of the grammar. Similar rules apply =
to perl and other languages as well when it comes to variable expansion =
and such.
Thank you,
-Enji
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