Date: Mon, 15 Sep 2025 19:45:34 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@FreeBSD.org> To: Bob Proulx <bob@proulx.com> Cc: questions@freebsd.org Subject: Re: [List] Re: Nice easy sed question Message-ID: <861po7hao1.fsf@ltc.des.dev> In-Reply-To: <20250912161922207688629@bob.proulx.com> (Bob Proulx's message of "Fri, 12 Sep 2025 16:46:12 -0600") References: <c1ba0b3e-2754-4bc7-af0b-b570a7693c7a@fjl.co.uk> <20250911221857100915167@bob.proulx.com> <4c223de1-6ed0-4f56-9b50-6cc1355a9790@fjl.co.uk> <ce6d67d5-83eb-44fb-a8bf-fbc0b00e77b7@qeng-ho.org> <20250912161922207688629@bob.proulx.com>
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Bob Proulx <bob@proulx.com> writes: > The FreeBSD sh shell is not a strict POSIX shell Technically correct. > and implements this ksh-ism so strictly speaking that is not portable > but it does work. Incorrect, dollar-quoted strings are part of POSIX. > This is what POSIX has to say about it. > > The '$' character is used to introduce parameter expansion, command > substitution, or arithmetic evaluation. If an unquoted '$' is followed > by a character that is not one of the following: You are looking in the wrong place. See XCU 2.2.4: https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html#tag_19_02_04 > The result of $'...' such as $'\n' is strictly speaking "unspecified" > behavior by the standard. On the contrary, it is perfectly well-defined. DES -- Dag-Erling Smørgrav - des@FreeBSD.orghome | help
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