View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000779 | 1003.1(2008)/Issue 7 | Shell and Utilities | public | 2013-10-28 22:00 | 2024-06-11 08:52 |
| Reporter | dwheeler | Assigned To | ajosey | ||
| Priority | normal | Severity | Objection | Type | Enhancement Request |
| Status | Closed | Resolution | Accepted As Marked | ||
| Name | David A Wheeler | ||||
| Organization | |||||
| User Reference | |||||
| Section | sed | ||||
| Page Number | 3184 | ||||
| Line Number | 106510 | ||||
| Interp Status | --- | ||||
| Final Accepted Text | See 0000779:0002050 | ||||
| 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. | ||||
| Desired Action | After line 106510, add: I Match the regular expression in a case-insensitive way. | ||||
| Tags | issue8 | ||||
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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. |
| 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 0000779:0002050 |
| 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 | |
| 2020-03-25 15:53 | geoffclare | Status | Resolved => Applied |
| 2024-06-11 08:52 | agadmin | Status | Applied => Closed |
