A NOTE has been added to this issue. ====================================================================== https://www.austingroupbugs.net/view.php?id=1778 ====================================================================== Reported By: kre Assigned To: ====================================================================== Project: Issue 8 drafts Issue ID: 1778 Category: Shell and Utilities Type: Enhancement Request Severity: Objection Priority: normal Status: New Name: Robert Elz Organization: User Reference: Section: XCU 3/read Page Number: 3291-3294 Line Number: 111869-111878, 111961-111963, 11946, 11979-11980 Final Accepted Text: ====================================================================== Date Submitted: 2023-10-02 13:58 UTC Last Modified: 2023-10-18 00:08 UTC ====================================================================== Summary: The read utility needs field splitting updates/corrections )and a little more) ====================================================================== Relationships ID Summary ---------------------------------------------------------------------- related to 0001649 Field splitting is woefully under speci... ======================================================================
---------------------------------------------------------------------- (0006547) kre (reporter) - 2023-10-18 00:08 https://www.austingroupbugs.net/view.php?id=1778#c6547 ---------------------------------------------------------------------- Re https://www.austingroupbugs.net/view.php?id=1778#c6543 This proposed new text has the same problem as (one of the ones) in the previous version: the new value assigned to the variable would change the current locale again, that's unknowable to the script writer, so their only possible response is to not read directly into whichever of those vars you imagine that they're using (LANG in the example from your previous note). It truly is not worth attempting to make this as specified as possible, there is no rational safe way to do a read into IFS, PATH, any of the locale vars (and more) directly - ones like PATH don't need mention here, as using that (or anything similar) would be perfectly defined for how read processes it, but that doesn't make it sane for an application to do (and perhaps the APPLICATION USAGE section should make that point) - vars which immediately affect how the shell works need to be validated before being altered if the input comes from outside the script itself. That's just sensible programming. So, I still claim there is no possible point attempting to find language to do other than simply specify that any attempt to read into any var whose value is (or ever could be) used as part of the <i>read</i> processing produces unspecified results (at least in cases when read processes the input, if you want to exempt the case when IFS="" then that's fine - that's simple enough - I'd also need to think about \ processing when -r isn't used, not for line joining, that's simple enough, but for removing it afterwards if the IFS='' read LANG has managed to make a change such that the code point that represents \ is no longer the same after the read as it was before, since even though no field splitting happens, the escape chars still need to be removed, and it would be truly weird, if the char that enabled lines to be joined, and the one later removed, were not the same one). Issue History Date Modified Username Field Change ====================================================================== 2023-10-02 13:58 kre New Issue 2023-10-02 13:58 kre Name => Robert Elz 2023-10-02 13:58 kre Section => XCU 3/read 2023-10-02 13:58 kre Page Number => 3291-3294 2023-10-02 13:58 kre Line Number => 111869-111878, 111961-111963, 11946, 11979-11980 2023-10-02 14:00 kre Note Added: 0006500 2023-10-02 14:02 kre Note Edited: 0006500 2023-10-02 14:20 kre Note Added: 0006502 2023-10-02 14:22 kre Note Edited: 0006502 2023-10-02 14:24 kre Note Edited: 0006502 2023-10-02 14:30 kre Note Added: 0006503 2023-10-02 14:33 kre Note Edited: 0006502 2023-10-02 14:34 kre Note Edited: 0006502 2023-10-02 14:44 kre Note Edited: 0006500 2023-10-02 16:18 geoffclare Project 1003.1(2013)/Issue7+TC1 => Issue 8 drafts 2023-10-02 16:19 geoffclare version => Draft 3 2023-10-02 16:20 geoffclare Note Added: 0006507 2023-10-02 16:21 geoffclare Relationship added related to 0001649 2023-10-03 09:23 geoffclare Note Added: 0006509 2023-10-03 11:59 kre Note Added: 0006510 2023-10-03 12:11 kre Note Added: 0006511 2023-10-03 13:42 geoffclare Note Added: 0006512 2023-10-04 14:42 kre Note Added: 0006513 2023-10-04 17:36 kre Note Added: 0006514 2023-10-05 08:59 geoffclare Note Added: 0006515 2023-10-05 11:08 kre Note Added: 0006516 2023-10-05 14:53 geoffclare Note Added: 0006517 2023-10-05 15:34 kre Note Edited: 0006516 2023-10-05 15:35 kre Note Edited: 0006516 2023-10-05 15:36 kre Note Edited: 0006516 2023-10-05 15:38 kre Note Added: 0006519 2023-10-05 15:41 kre Note Edited: 0006513 2023-10-06 07:58 geoffclare Note Edited: 0006515 2023-10-06 21:41 chet_ramey Note Added: 0006524 2023-10-10 11:06 geoffclare Note Edited: 0006515 2023-10-10 14:36 geoffclare Note Added: 0006526 2023-10-10 17:19 kre Note Added: 0006527 2023-10-11 08:04 geoffclare Note Added: 0006528 2023-10-11 17:13 kre Note Added: 0006529 2023-10-12 08:30 geoffclare Note Added: 0006530 2023-10-12 18:33 kre Note Added: 0006531 2023-10-12 18:45 kre Note Edited: 0006516 2023-10-12 18:54 kre Note Added: 0006532 2023-10-16 09:02 geoffclare Note Added: 0006533 2023-10-16 09:03 geoffclare Note Edited: 0006533 2023-10-16 09:19 geoffclare Note Added: 0006534 2023-10-16 21:43 kre Note Added: 0006537 2023-10-16 22:10 kre Note Added: 0006538 2023-10-17 13:34 geoffclare Note Added: 0006543 2023-10-18 00:08 kre Note Added: 0006547 ======================================================================
