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| ID | Category | Severity | Type | Date Submitted | Last Update | ||
| 0000779 | [1003.1(2008)/Issue 7] Shell and Utilities | Objection | Enhancement Request | 2013-10-28 22:00 | 2024-06-11 08:52 | ||
| Reporter | dwheeler | View Status | public | ||||
| Assigned To | ajosey | ||||||
| Priority | normal | Resolution | Accepted As Marked | ||||
| Status | Closed | ||||||
| Name | David A Wheeler | ||||||
| Organization | |||||||
| User Reference | |||||||
| Section | sed | ||||||
| Page Number | 3184 | ||||||
| Line Number | 106510 | ||||||
| Interp Status | --- | ||||||
| Final Accepted Text | See Note: 0002050 | ||||||
| Summary | 0000779: Add "ignore case" flag to sed's "s": s/old/new/I | ||||||
| Description |
Currently the POSIX standard provides no "ignore case" flag for sed's substitute (s) command. Yet case-insensitive matching is useful. The regcomp() function already supports this via the flag REG_ICASE (see POSIX 2013, page 1783). As noted in one sed FAQ (http://sed.sourceforge.net/sedfaq4.html#s4.10), [^] without this capability "case-insensitive searching is awkward". GNU sed, FreeBSD sed, and Busybox sed all support case-insensitive matching using the "I" (capital I) flag: * https://www.gnu.org/software/sed/manual/sed.html#The-_0022s_0022-Command [^] * http://www.freebsd.org/cgi/man.cgi?query=sed&apropos=0&sektion=0&manpath=FreeBSD+9.2-RELEASE&arch=default&format=html [^] * http://git.busybox.net/busybox/tree/editors/sed.c?h=1_21_stable [^] (line 421) FreeBSD and busybox only support "I" as the flag, not "i". GNU sed actually supports both "i" and "I". However, since FreeBSD only supports "I", I propose that one. Note that one sed tutorial (http://www.grymoire.com/Unix/Sed.html#uh-38) [^] only notes "I" with GNU sed, so that seems to be the more popular choice. Note, however, that perl uses "i" not "I" - so there is some argument for "i". If people want to use "i" as the flag instead of "I" that's fine with me. We just need to pick a flag so sed scripts can port. |
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| Desired Action |
After line 106510, add: I Match the regular expression in a case-insensitive way. |
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| Tags | issue8 | ||||||
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Notes |
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(0002050) nick (manager) 2013-12-05 17:30 edited on: 2013-12-05 17:31 |
After line 106510, add: i Match the regular expression in a case-insensitive way. Add new para to APPLICATION USAGE after line 106550: Note that some implementations of sed also support an 'I' flag for the 's' command as an alias for the lower case 'i' flag. |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2013-10-28 22:00 | dwheeler | New Issue | |
| 2013-10-28 22:00 | dwheeler | Status | New => Under Review |
| 2013-10-28 22:00 | dwheeler | Assigned To | => ajosey |
| 2013-10-28 22:00 | dwheeler | Name | => Your Name Here |
| 2013-10-28 22:00 | dwheeler | Section | => sed |
| 2013-10-28 22:00 | dwheeler | Page Number | => 3184 |
| 2013-10-28 22:00 | dwheeler | Line Number | => 106510 |
| 2013-12-05 17:24 | nick | Tag Attached: issue8 | |
| 2013-12-05 17:30 | nick | Interp Status | => --- |
| 2013-12-05 17:30 | nick | Note Added: 0002050 | |
| 2013-12-05 17:30 | nick | Resolution | Open => Accepted As Marked |
| 2013-12-05 17:31 | nick | Name | Your Name Here => David A Wheeler |
| 2013-12-05 17:31 | nick | Final Accepted Text | => See Note: 0002050 |
| 2013-12-05 17:31 | nick | Status | Under Review => Resolved |
| 2013-12-05 17:31 | nick | Note Edited: 0002050 | |
| 2013-12-05 17:31 | nick | Note Edited: 0002050 | |
| 2013-12-09 18:47 | eadler | Issue Monitored: eadler | |
| 2020-03-25 15:53 | geoffclare | Status | Resolved => Applied |
| 2024-06-11 08:52 | agadmin | Status | Applied => Closed |
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