Date: Thu, 28 Jun 2012 22:20:13 GMT From: "Ronald F. Guilmette" <rfg@tristatelogic.com> To: freebsd-standards@FreeBSD.org Subject: Re: bin/169500: /bin/expr improperly requires forward slash to be escaped Message-ID: <201206282220.q5SMKDVs069884@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR bin/169500; it has been noted by GNATS. From: "Ronald F. Guilmette" <rfg@tristatelogic.com> To: Garrett Wollman <wollman@hergotha.csail.mit.edu> Cc: freebsd-gnats-submit@freebsd.org Subject: Re: bin/169500: /bin/expr improperly requires forward slash to be escaped Date: Thu, 28 Jun 2012 15:11:55 -0700 In message <201206280136.q5S1aOQO093902@hergotha.csail.mit.edu>, you wrote: >In article <20120627214105.A1EA35081B@segfault.tristatelogic.com>, >rfg@tristatelogic.com writes: > >>According to my reading of Sections 2.8.3.1.1 and 2.8.3.1.2 of the ANSI/IEEE >>standard 1003.2, a forward slash character (/) is an "ordinary" basic >>regular expression (BRE) character, and as such can be used in a BRE alone >>to match itself. > >IEEE Std.1003.2 was obsoleted by the publication of IEEE >Std.1003.1-2001; your reference is at least fifteen years old. Yes. My bad. Sorry. (These publications are quite expensive, as you may know, and thus, I have not updated mine in quite some time.) >>As far as I can tell, backslash-escaping of this specific character >>should not be required within BREs. > >Nothing to do with the BRE-ness. As the 2001 edition of the standard >states (page 429, lines 16598-16599): > > A string argument is an argument that cannot be identified as > an integer argument or as one of the expression operator > symbols shown in the OPERANDS section. Humm... OK. How do I retract my PR?
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201206282220.q5SMKDVs069884>