3 messages in org.freebsd.freebsd-standardsRe: bin/169500: /bin/expr improperly ...| From | Sent On | Attachments |
|---|---|---|
| Ronald F. Guilmette | Jun 28, 2012 3:19 pm | |
| Chris Rees | Jun 28, 2012 3:27 pm | |
| Garrett Wollman | Jun 28, 2012 3:33 pm |
| Subject: | Re: bin/169500: /bin/expr improperly requires forward slash to be escaped | |
|---|---|---|
| From: | Ronald F. Guilmette (rf...@tristatelogic.com) | |
| Date: | Jun 28, 2012 3:19:50 pm | |
| List: | org.freebsd.freebsd-standards | |
The following reply was made to PR bin/169500; it has been noted by GNATS.
From: "Ronald F. Guilmette" <rf...@tristatelogic.com>
To: Garrett Wollman <woll...@hergotha.csail.mit.edu>
Cc: free...@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 <2012...@hergotha.csail.mit.edu>, you wrote:
In article <2012...@segfault.tristatelogic.com>, rf...@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?
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