[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [ddlm-group] Case sensitivity

• To: Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
• Subject: Re: [ddlm-group] Case sensitivity
• From: David Brown <idbrown@mcmaster.ca>
• Date: Tue, 05 Jan 2010 15:58:44 -0500
• In-Reply-To: <4B437C06.30207@niehs.nih.gov>
• References: <4B437C06.30207@niehs.nih.gov>

Title:

There was discussion about case sensitivity of data names at the COMCIFS meeting in Osaka.  My recollection is that we agreed that names should be case sensitive, and to avoid problems with having two data names that differ only in their cases, all data names should be lower case.  There are legacy problems because in DDL1 the data names are case insensitive, and while most of the names have been written in lower case, upper case letters have been traditionally used for proper names, e.g., _space_group_name_Hall.  There may well be legacy CIFs in which only lower case letters have been used but probably not many. DAvid Joe Krahn wrote: Is there any interest in making CIF2 case-sensitive, at least data names? There was some discussion that names may eventually extend into the UTF range, even though it would be avoided for the near future. That complicates case-insensitive matching, because standard library functions are locale dependent. If data names are not strictly limited to 7-bit ASCII, it would be good to make names case-sensitive. Thanks, Joe Krahn _______________________________________________ ddlm-group mailing list ddlm-group@iucr.org http://scripts.iucr.org/mailman/listinfo/ddlm-group

begin:vcard
fn:I.David Brown
n:Brown;I.David
org:McMaster University;Brockhouse Institute for Materials Research
adr:;;King St. W;Hamilton;Ontario;L8S 4M1;Canada
email;internet:idbrown@mcmaster.ca
title:Professor Emeritus
tel;work:+905 525 9140 x 24710
tel;fax:+905 521 2773
version:2.1
end:vcard

_______________________________________________
ddlm-group mailing list
ddlm-group@iucr.org
http://scripts.iucr.org/mailman/listinfo/ddlm-group

Reply to: [list | sender only]

• Follow-Ups:
  • Re: [ddlm-group] Case sensitivity (Joe Krahn)

• References:
  • [ddlm-group] Case sensitivity (Joe Krahn)

• Prev by Date: Re: [ddlm-group] LOOP versus LIST
• Next by Date: Re: [ddlm-group] Case sensitivity
• Prev by thread: [ddlm-group] Case sensitivity
• Next by thread: Re: [ddlm-group] Case sensitivity
• Index(es):
  • Date
  • Thread