digitalmars.D.bugs - [Issue 423] New: dmd ignores empty commandline arguments
- d-bugmail puremagic.com (17/17) Oct 09 2006 http://d.puremagic.com/issues/show_bug.cgi?id=423
- Walter Bright (2/22) Oct 10 2006 That's what it's supposed to do.
- Derek Parnell (6/28) Oct 10 2006 Why? I would have expected a string of length zero to be passed.
- Hasan Aljudy (2/28) Oct 10 2006 So? It's zero-length string is "nothing", hence ignored.
- Derek Parnell (19/48) Oct 10 2006 Huh? If I hold a cup of coffee, then drink it all, do I still hold
- Walter Bright (15/17) Oct 10 2006 We could argue this till the cows come home. But the current behavior:
- Thomas Kuehne (12/29) Oct 11 2006 -----BEGIN PGP SIGNED MESSAGE-----
- Hasan Aljudy (2/8) Oct 12 2006 Hmm, so does it have anything to do with a bug in dbuild, Derek?
- Derek Parnell (10/19) Oct 12 2006 Huh? Does 'what' have anything to do with dbuild? The topic is about dmd
- d-bugmail puremagic.com (4/4) Jun 25 2008 http://d.puremagic.com/issues/show_bug.cgi?id=423
- d-bugmail puremagic.com (9/9) Jul 09 2008 http://d.puremagic.com/issues/show_bug.cgi?id=423
http://d.puremagic.com/issues/show_bug.cgi?id=423
Summary: dmd ignores empty commandline arguments
Product: D
Version: 0.169
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: bugzilla digitalmars.com
ReportedBy: thomas-dloop kuehne.cn
dmd "" a.d
is interpreted as >dmd a.d<
dmd ''
is interpteted as >dmd<
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Oct 09 2006
d-bugmail puremagic.com wrote:
http://d.puremagic.com/issues/show_bug.cgi?id=423
Summary: dmd ignores empty commandline arguments
Product: D
Version: 0.169
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: bugzilla digitalmars.com
ReportedBy: thomas-dloop kuehne.cn
dmd "" a.d
is interpreted as >dmd a.d<
dmd ''
is interpteted as >dmd<
That's what it's supposed to do.
Oct 10 2006
On Tue, 10 Oct 2006 01:39:01 -0700, Walter Bright wrote:d-bugmail puremagic.com wrote:Why? I would have expected a string of length zero to be passed. -- Derek Parnell Melbourne, Australia "Down with mediocrity!"http://d.puremagic.com/issues/show_bug.cgi?id=423 Summary: dmd ignores empty commandline arguments Product: D Version: 0.169 Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: bugzilla digitalmars.com ReportedBy: thomas-dloop kuehne.cn dmd "" a.d is interpreted as >dmd a.d< dmd '' is interpteted as >dmd<That's what it's supposed to do.
Oct 10 2006
Derek Parnell wrote:On Tue, 10 Oct 2006 01:39:01 -0700, Walter Bright wrote:So? It's zero-length string is "nothing", hence ignored.d-bugmail puremagic.com wrote:Why? I would have expected a string of length zero to be passed.http://d.puremagic.com/issues/show_bug.cgi?id=423 Summary: dmd ignores empty commandline arguments Product: D Version: 0.169 Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: bugzilla digitalmars.com ReportedBy: thomas-dloop kuehne.cn dmd "" a.d is interpreted as >dmd a.d< dmd '' is interpteted as >dmd<That's what it's supposed to do.
Oct 10 2006
On Tue, 10 Oct 2006 16:47:34 -0600, Hasan Aljudy wrote:Derek Parnell wrote:Huh? If I hold a cup of coffee, then drink it all, do I still hold nothing or a cup of nothing? A string is a container that holds zero or more characters, IMHO. An empty string is still a string, it just has no characters in it. Consider a blank sheet of paper; is it full of 'space' characters or does it contain nothing? Is it still a page if it has no characters in it? Consider an array of text lines; if one or more of them are empty, do we ignore those when printing on a page or do we use that information? The strings on a command line contain information even if one of them is empty - at the very least it is a placeholder. An empty string is different from a string that is not initialized and different again from non-existent 'string'. -- Derek (skype: derek.j.parnell) Melbourne, Australia "Down with mediocrity!" 11/10/2006 9:07:12 AMOn Tue, 10 Oct 2006 01:39:01 -0700, Walter Bright wrote:So? It's zero-length string is "nothing", hence ignored.d-bugmail puremagic.com wrote:Why? I would have expected a string of length zero to be passed.http://d.puremagic.com/issues/show_bug.cgi?id=423 Summary: dmd ignores empty commandline arguments Product: D Version: 0.169 Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: bugzilla digitalmars.com ReportedBy: thomas-dloop kuehne.cn dmd "" a.d is interpreted as >dmd a.d< dmd '' is interpteted as >dmd<That's what it's supposed to do.
Oct 10 2006
Derek Parnell wrote:The strings on a command line contain information even if one of them is empty - at the very least it is a placeholder.We could argue this till the cows come home. But the current behavior: 1) Is a result of the Digital Mars C startup code 2) It's been that way for 20+ years 3) It's embedded into every DM tool and every command line program created with DM Nobody has ever complained about it or even commented on it before. I doubt anyone has noticed it - I certainly haven't, and I've used this stuff probably more than anyone <g>. Linux, however, does behave the way you suggest - at least the default shell I use does it that way. On the other hand, I've never seen any linux utility that made any mention in its documentation about having any meaning assigned to blank arguments. Trying it on a few just gives errors. In other words, I don't think it's worth arguing about or changing.
Oct 10 2006
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Walter Bright schrieb am 2006-10-11:Derek Parnell wrote:Please document this behaviour(http://www.digitalmars.com/d/dcompiler.html).The strings on a command line contain information even if one of them is empty - at the very least it is a placeholder.We could argue this till the cows come home. But the current behavior: 1) Is a result of the Digital Mars C startup code 2) It's been that way for 20+ years 3) It's embedded into every DM tool and every command line program created with DMNobody has ever complained about it or even commented on it before. I doubt anyone has noticed it - I certainly haven't, and I've used this stuff probably more than anyone <g>. Linux, however, does behave the way you suggest - at least the default shell I use does it that way. On the other hand, I've never seen any linux utility that made any mention in its documentation about having any meaning assigned to blank arguments. Trying it on a few just gives errors. In other words, I don't think it's worth arguing about or changing.The Linux Way is very nice for locating scripting bugs: dmd "${SOURCE_1}" "${SPURCE_2}" Thomas -----BEGIN PGP SIGNATURE----- iD8DBQFFLWIVLK5blCcjpWoRApSxAJoCdkJ/hpeJxrjvNm9NN8uzTGtLAQCgno4+ o6BocvVDeMNBUHHK3YeXrZA= =abZh -----END PGP SIGNATURE-----
Oct 11 2006
Thomas Kuehne wrote:
The Linux Way is very nice for locating scripting bugs:
dmd "${SOURCE_1}" "${SPURCE_2}"
Thomas
Hmm, so does it have anything to do with a bug in dbuild, Derek?
Oct 12 2006
Derek Parnell <derek psyc.ward> On Thu, 12 Oct 2006 12:58:56 -0600, Hasan Aljudy wrote:Thomas Kuehne wrote:Huh? Does 'what' have anything to do with dbuild? The topic is about dmd not acknowledging an empty commandline argument. The dbuild utility, having been compiled by dmd, inherits Walter's view of what is correct commandline parsing and it just gets whatever dmd takes out of the command line. So the short answer is *no*. -- Derek Parnell Melbourne, Australia "Down with mediocrity!"The Linux Way is very nice for locating scripting bugs: dmd "${SOURCE_1}" "${SPURCE_2}" ThomasHmm, so does it have anything to do with a bug in dbuild, Derek?
Oct 12 2006
http://d.puremagic.com/issues/show_bug.cgi?id=423 I'll add a note to dcompiler.html --
Jun 25 2008
http://d.puremagic.com/issues/show_bug.cgi?id=423
bugzilla digitalmars.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
Fixed dmd 1.032 and 2.016
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Jul 09 2008