Re: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
Eric Blake wrote, on 23 Oct 2019:
>
> On 10/23/19 9:49 AM, Geoff Clare wrote:
> >
> >The status changing to APPLIED means that the edits have now been made
> >to the troff source of the standard.
> >
> >Although that doesn't mean they are set-in-stone, we would need a good
> >reason to reopen the bug to change the resolution, and then update
> >the troff to reflect the new resolution.
> >
> >As regards removing the "" case from the example, the parenthetical
> >note after the code explains why that is there.
>
> The proposal was not to delete the "" case, but...
>
> >>case $dir in
> >> (/*) CDPATH= cd -P "$dir";;
> >> ("") CDPATH= cd -P "";;
> >> (*) CDPATH= cd -P "./$dir";;
> >> esac
> >>
> >>be shortened to
> >>
> >>case $dir in
> >> (/*|) CDPATH= cd -P "$dir";;
>
> to condense two cases into one. Except that it uses the wrong syntax; the
> correct spelling would be (/*|'') (or using more spacing, '( /* | '' )').
Ah, yes, the lack of quotes after it caused me to miss the added |.
I actually prefer that it's a separate case, since it makes it stand
out more - and the comment below it suggests that applications might
want to handle that case differently, in which case it would need to
be separate.
--
Geoff Clare
The Open Group, Apex Plaza, Forbury Road, Reading, RG1 1AX, England
Re: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
On 10/23/19 9:49 AM, Geoff Clare wrote:
Hi Konrad.
The status changing to APPLIED means that the edits have now been made
to the troff source of the standard.
Although that doesn't mean they are set-in-stone, we would need a good
reason to reopen the bug to change the resolution, and then update
the troff to reflect the new resolution.
As regards removing the "" case from the example, the parenthetical
note after the code explains why that is there.
The proposal was not to delete the "" case, but...
case $dir in
(/*) CDPATH= cd -P "$dir";;
("") CDPATH= cd -P "";;
(*) CDPATH= cd -P "./$dir";;
esac
be shortened to
case $dir in
(/*|) CDPATH= cd -P "$dir";;
to condense two cases into one. Except that it uses the wrong syntax;
the correct spelling would be (/*|'') (or using more spacing, '( /* | ''
)').
I don't have any qualms with condensing the example from a technical
standpoint (if done correctly), but question whether it counts as a mere
editorial change worth making this late in the process for this bug.
(*) CDPATH= cd -P "./$dir";;
esac
?
Also, from a usability perspective, I think it would be better if `-' lost its
special meaning after `--'. This would make the above code superfluous.
Coding that up would be at odds with existing practice, so even if we
were to choose that way if designing from scratch, I don't think we can
make that change now.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
Re: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
Hi Konrad.
The status changing to APPLIED means that the edits have now been made
to the troff source of the standard.
Although that doesn't mean they are set-in-stone, we would need a good
reason to reopen the bug to change the resolution, and then update
the troff to reflect the new resolution.
As regards removing the "" case from the example, the parenthetical
note after the code explains why that is there.
Regards,
Geoff.
Schwarz, Konrad wrote, on 23 Oct 2019:
>
> > -Original Message-
> > From: Austin Group Bug Tracker
> > Sent: Wednesday, October 23, 2019 3:58 PM
> > To: austin-group-l@opengroup.org
> > Subject: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
> >
> >
> > The following issue has a resolution that has been APPLIED.
> > ==
> > http://austingroupbugs.net/view.php?id=1045
>
> Could the example
>
> case $dir in
> (/*) CDPATH= cd -P "$dir";;
> ("") CDPATH= cd -P "";;
> (*) CDPATH= cd -P "./$dir";;
> esac
>
> be shortened to
>
> case $dir in
> (/*|) CDPATH= cd -P "$dir";;
> (*) CDPATH= cd -P "./$dir";;
> esac
>
> ?
>
> Also, from a usability perspective, I think it would be better if `-' lost
> its special meaning after `--'. This would make the above code superfluous.
>
> Konrad Schwarz
--
Geoff Clare
The Open Group, Apex Plaza, Forbury Road, Reading, RG1 1AX, England
RE: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
> -Original Message-
> From: Austin Group Bug Tracker
> Sent: Wednesday, October 23, 2019 3:58 PM
> To: austin-group-l@opengroup.org
> Subject: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
>
>
> The following issue has a resolution that has been APPLIED.
> ==
> http://austingroupbugs.net/view.php?id=1045
Could the example
case $dir in
(/*) CDPATH= cd -P "$dir";;
("") CDPATH= cd -P "";;
(*) CDPATH= cd -P "./$dir";;
esac
be shortened to
case $dir in
(/*|) CDPATH= cd -P "$dir";;
(*) CDPATH= cd -P "./$dir";;
esac
?
Also, from a usability perspective, I think it would be better if `-' lost its
special meaning after `--'. This would make the above code superfluous.
Konrad Schwarz
[1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
The following issue has a resolution that has been APPLIED. == http://austingroupbugs.net/view.php?id=1045 == Reported By:stephane Assigned To: == Project:1003.1(2013)/Issue7+TC1 Issue ID: 1045 Category: Shell and Utilities Type: Enhancement Request Severity: Editorial Priority: normal Status: Applied Name: Stephane Chazelas Organization: User Reference: Section:cd utility Page Number:2529 Line Number:81569 Interp Status: Approved Final Accepted Text:http://austingroupbugs.net/view.php?id=1045#c3749 Resolution: Accepted As Marked Fixed in Version: == Date Submitted: 2016-04-23 15:07 UTC Last Modified: 2019-10-23 13:57 UTC == Summary:Issues with "cd -" == Relationships ID Summary -- related to 0001047 Unspecified behaviour for cd == Issue History Date ModifiedUsername FieldChange == 2016-04-23 15:07 stephane New Issue 2016-04-23 15:07 stephane Name => Stephane Chazelas 2016-04-23 15:07 stephane Section => cd utility 2016-04-23 15:07 stephane Page Number => 2529 2016-04-23 15:07 stephane Line Number => 81569 2016-04-25 10:13 joerg Note Added: 0003173 2016-04-25 10:42 stephane Note Added: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:48 geoffclare Note Added: 0003175 2016-04-25 10:49 geoffclare Note Edited: 0003175 2016-04-25 11:19 geoffclare Note Edited: 0003175 2016-04-25 11:34 geoffclare Relationship added related to 0001047 2016-05-12 14:17 Vincent LefevreNote Added: 0003226 2017-05-25 16:33 geoffclare Note Added: 0003749 2017-05-25 16:35 geoffclare Note Edited: 0003749 2017-05-25 16:36 geoffclare Interp Status => Pending 2017-05-25 16:36 geoffclare Final Accepted Text => http://austingroupbugs.net/view.php?id=1045#c3749 2017-05-25 16:36 geoffclare Status New => Interpretation Required 2017-05-25 16:36 geoffclare Resolution Open => Accepted As Marked 2017-05-25 16:36 geoffclare Tag Attached: tc3-2008 2017-06-01 15:40 geoffclare Note Edited: 0003749 2017-06-01 15:43 Don Cragun Note Added: 0003750 2017-06-01 15:44 Don Cragun Note Deleted: 0003750 2017-06-02 13:34 ajosey Interp StatusPending => Proposed 2017-06-02 13:34 ajosey Note Added: 0003752 2017-06-10 14:14 stephane Note Added: 0003758 2017-06-10 17:50 stephane Note Edited: 0003758 2017-07-06 20:06 ajosey Interp StatusProposed => Approved 2017-07-06 20:06 ajosey Note Added: 0003808 2019-10-23 13:57 geoffclare Status Interpretation Required => Applied ==
Re: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
In a message dated 6/10/2017 10:16:54 A.M. Eastern Daylight Time, nore...@msnkbrown.net writes: (it's not even clear if such arrays of bytes may be stored in shell variables). This is allowed, clearly, but you currently have to jump through hoops to make use of an arbitrary sequence when the locale is 'C' or 'POSIX', which is the unclear part. The shell is adding the $'...' string form to address setting the values or as constants otherwise, but some aspects of using them still problematic. These problems have been discussed ad nauseam in other bugs so I won't elaborate. Using the values in substitutions may have additional context or implementation sensitive restrictions.
[1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
A NOTE has been added to this issue. == http://austingroupbugs.net/view.php?id=1045 == Reported By:stephane Assigned To: == Project:1003.1(2013)/Issue7+TC1 Issue ID: 1045 Category: Shell and Utilities Type: Enhancement Request Severity: Editorial Priority: normal Status: Interpretation Required Name: Stephane Chazelas Organization: User Reference: Section:cd utility Page Number:2529 Line Number:81569 Interp Status: Proposed Final Accepted Text:http://austingroupbugs.net/view.php?id=1045#c3749 == Date Submitted: 2016-04-23 15:07 UTC Last Modified: 2017-06-10 14:14 UTC == Summary:Issues with "cd -" == Relationships ID Summary -- related to 0001047 Unspecified behaviour for cd == -- (0003758) stephane (reporter) - 2017-06-10 14:14 http://austingroupbugs.net/view.php?id=1045#c3758 -- Thanks. The resolution is fine to be. About the application usage section, I'd just add a note that since a file path can be any array of non-null bytes, the case $dir in /*) is currently not clearly specified in the case where those bytes don't form valid characters (it's not even clear if such arrays of bytes may be stored in shell variables). In any case, that's something that would have to be addressed in a separate issue. But possibly, that means that the example above would have to be amended to have a "LC_ALL=C" read, parsed and run before the "case" command is run. Also, as noted on the mailing list, we may want to add similar usage sections for the other cases where "-" is a problem (most text utilities and more). Issue History Date ModifiedUsername FieldChange == 2016-04-23 15:07 stephane New Issue 2016-04-23 15:07 stephane Name => Stephane Chazelas 2016-04-23 15:07 stephane Section => cd utility 2016-04-23 15:07 stephane Page Number => 2529 2016-04-23 15:07 stephane Line Number => 81569 2016-04-25 10:13 joerg Note Added: 0003173 2016-04-25 10:42 stephane Note Added: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:48 geoffclare Note Added: 0003175 2016-04-25 10:49 geoffclare Note Edited: 0003175 2016-04-25 11:19 geoffclare Note Edited: 0003175 2016-04-25 11:34 geoffclare Relationship added related to 0001047 2016-05-12 14:17 Vincent LefevreNote Added: 0003226 2017-05-25 16:33 geoffclare Note Added: 0003749 2017-05-25 16:35 geoffclare Note Edited: 0003749 2017-05-25 16:36 geoffclare Interp Status => Pending 2017-05-25 16:36 geoffclare Final Accepted Text => http://austingroupbugs.net/view.php?id=1045#c3749 2017-05-25 16:36 geoffclare Status New => Interpretation Required 2017-05-25 16:36 geoffclare Resolution Open => Accepted As Marked 2017-05-25 16:36 geoffclare Tag Attached: tc3-2008 2017-06-01 15:40 geoffclare Note Edited: 0003749 2017-06-01 15:43 Don Cragun Note Added: 0003750 2017-06-01 15:44 Don Cragun Note Deleted: 0003750 2017-06-02 13:34 ajosey Interp StatusPending => Proposed 2017-06-02 13:34 ajosey Note Added: 0003752 2017-06-10 14:14 stephane Note Added: 0003758 ==
[1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
The following issue has been UPDATED. == http://austingroupbugs.net/view.php?id=1045 == Reported By:stephane Assigned To: == Project:1003.1(2013)/Issue7+TC1 Issue ID: 1045 Category: Shell and Utilities Type: Enhancement Request Severity: Editorial Priority: normal Status: Interpretation Required Name: Stephane Chazelas Organization: User Reference: Section:cd utility Page Number:2529 Line Number:81569 Interp Status: Proposed Final Accepted Text:http://austingroupbugs.net/view.php?id=1045#c3749 == Date Submitted: 2016-04-23 15:07 UTC Last Modified: 2017-06-02 13:34 UTC == Summary:Issues with "cd -" == Relationships ID Summary -- related to 0001047 Unspecified behaviour for cd == -- (0003752) ajosey (manager) - 2017-06-02 13:34 http://austingroupbugs.net/view.php?id=1045#c3752 -- Interpretation proposed: 2 June 2017 Issue History Date ModifiedUsername FieldChange == 2016-04-23 15:07 stephane New Issue 2016-04-23 15:07 stephane Name => Stephane Chazelas 2016-04-23 15:07 stephane Section => cd utility 2016-04-23 15:07 stephane Page Number => 2529 2016-04-23 15:07 stephane Line Number => 81569 2016-04-25 10:13 joerg Note Added: 0003173 2016-04-25 10:42 stephane Note Added: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:48 geoffclare Note Added: 0003175 2016-04-25 10:49 geoffclare Note Edited: 0003175 2016-04-25 11:19 geoffclare Note Edited: 0003175 2016-04-25 11:34 geoffclare Relationship added related to 0001047 2016-05-12 14:17 Vincent LefevreNote Added: 0003226 2017-05-25 16:33 geoffclare Note Added: 0003749 2017-05-25 16:35 geoffclare Note Edited: 0003749 2017-05-25 16:36 geoffclare Interp Status => Pending 2017-05-25 16:36 geoffclare Final Accepted Text => http://austingroupbugs.net/view.php?id=1045#c3749 2017-05-25 16:36 geoffclare Status New => Interpretation Required 2017-05-25 16:36 geoffclare Resolution Open => Accepted As Marked 2017-05-25 16:36 geoffclare Tag Attached: tc3-2008 2017-06-01 15:40 geoffclare Note Edited: 0003749 2017-06-01 15:43 Don Cragun Note Added: 0003750 2017-06-01 15:44 Don Cragun Note Deleted: 0003750 2017-06-02 13:34 ajosey Interp StatusPending => Proposed 2017-06-02 13:34 ajosey Note Added: 0003752 ==
Re: [1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
That's why it's spelled out, so people don't use the Unicode visual duplicate in most fonts if some engine substitutes it, as Mantis does sometimes. Probably because '/' missing from following tag closure. In a message dated 5/26/2017 11:12:17 A.M. Eastern Daylight Time, stephane.chaze...@gmail.com writes: > On page 2562 line 82990-82993 section cd, > change:−When a is used as the > operand, this shall be equivalent to the command: [...] Note that that "−" above is a "minus sign" (U+2212), not a "-" "hyphen minus" (U+002D).
[1003.1(2013)/Issue7+TC1 0001045]: Issues with "cd -"
The following issue NEEDS AN INTERPRETATION. == http://austingroupbugs.net/view.php?id=1045 == Reported By:stephane Assigned To: == Project:1003.1(2013)/Issue7+TC1 Issue ID: 1045 Category: Shell and Utilities Type: Enhancement Request Severity: Editorial Priority: normal Status: Interpretation Required Name: Stephane Chazelas Organization: User Reference: Section:cd utility Page Number:2529 Line Number:81569 Interp Status: Pending Final Accepted Text:http://austingroupbugs.net/view.php?id=1045#c3749 == Date Submitted: 2016-04-23 15:07 UTC Last Modified: 2017-05-25 16:36 UTC == Summary:Issues with "cd -" == Relationships ID Summary -- related to 0001047 Unspecified behaviour for cd == Issue History Date ModifiedUsername FieldChange == 2016-04-23 15:07 stephane New Issue 2016-04-23 15:07 stephane Name => Stephane Chazelas 2016-04-23 15:07 stephane Section => cd utility 2016-04-23 15:07 stephane Page Number => 2529 2016-04-23 15:07 stephane Line Number => 81569 2016-04-25 10:13 joerg Note Added: 0003173 2016-04-25 10:42 stephane Note Added: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:47 stephane Note Edited: 0003174 2016-04-25 10:48 geoffclare Note Added: 0003175 2016-04-25 10:49 geoffclare Note Edited: 0003175 2016-04-25 11:19 geoffclare Note Edited: 0003175 2016-04-25 11:34 geoffclare Relationship added related to 0001047 2016-05-12 14:17 Vincent LefevreNote Added: 0003226 2017-05-25 16:33 geoffclare Note Added: 0003749 2017-05-25 16:35 geoffclare Note Edited: 0003749 2017-05-25 16:36 geoffclare Interp Status => Pending 2017-05-25 16:36 geoffclare Final Accepted Text => http://austingroupbugs.net/view.php?id=1045#c3749 2017-05-25 16:36 geoffclare Status New => Interpretation Required 2017-05-25 16:36 geoffclare Resolution Open => Accepted As Marked ==
