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| ID | Category | Severity | Type | Date Submitted | Last Update | ||
| 0000443 | [2008-TC1] Shell and Utilities | Objection | Omission | 2011-05-14 17:40 | 2011-05-19 16:26 | ||
| Reporter | jilles | View Status | public | ||||
| Assigned To | ajosey | ||||||
| Priority | normal | Resolution | Rejected | ||||
| Status | Closed | Product Version | Draft 1 | ||||
| Name | Jilles Tjoelker | ||||||
| Organization | |||||||
| User Reference | |||||||
| Section | 2.8.1 Consequences of Shell Errors, 2.14 dot, 2.14 eval | ||||||
| Page Number | 2315,2341,2343 | ||||||
| Line Number | 73050-73051,74053,74110 | ||||||
| Interp Status | --- | ||||||
| Final Accepted Text | |||||||
| Summary | 0000443: poor wording about errors in interactive shells | ||||||
| Description |
Various pieces of text suggest that interactive shells continue executing a command after errors (albeit with $? != 0) that would cause a non-interactive shell to exit. This does not seem very useful and does not match most implementations. Most implementations abort the commands currently in progress, set $? to a value greater than 0 and return to the prompt. Change Number XCU/TC1/D1/0023 [114] makes this worse, suggesting that an interactive shell continue executing after an error in dot. For example, I would expect the following to print an error message, and no "continued" message: $ . /nonexistent; echo continued $? Change Number: XCU/TC1/D1/0025 [114] makes this worse, suggesting that an interactive shell continue executing after an error in eval. My assumption is that if something is mentioned explicitly in the "Exit status" subsection of a description of a special built-in utility in 2.14, this means that the shell continues executing commands after the special builtin; in other words, "shall exit" errors from 2.8.1 are not mentioned there. |
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| Desired Action |
In 2.8.1 Consequences of Shell Errors, change In all of the cases shown in the table, an interactive shell shall write a diagnostic message to standard error without exiting. to If any of the errors shown as ‘‘shall exit’’ or ‘‘(may) exit’’ occur in an interactive shell, the shell shall write a diagnostic message to standard error, set $? to a value greater than 0 and return to the prompt. In 2.14 dot, do not apply XCU/TC1/D1/0023 [114]. If the section is not clear enough, it may be necessary to clarify that if the dot script cannot be found or opened it is a "Dot script not found" error per 2.8.1 and if the commands cannot be parsed it is a "Shell language syntax error" per 2.8.1. In 2.14 eval, do not apply XCU/TC1/D1/0025 [114]. |
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Notes |
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(0000786) ajosey (manager) 2011-05-19 16:02 |
We have recategorized this item as an objection (note it was erroneously accepted at one point) and this item is open. |
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(0000787) Don Cragun (manager) 2011-05-19 16:26 edited on: 2011-05-19 16:29 |
The changes suggested here may have merit, but (since they don't reflect existing practice) would not be suitable for a technical corrigenda. We believe that this issue should be raised against the current standard and the resolution should be targeted to the next revision. We recommend filing a new bug (of type enhancement request) against Issue 7 to address this issue. |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2011-05-14 17:40 | jilles | New Issue | |
| 2011-05-14 17:40 | jilles | Status | New => Under Review |
| 2011-05-14 17:40 | jilles | Assigned To | => ajosey |
| 2011-05-14 17:40 | jilles | Name | => Jilles Tjoelker |
| 2011-05-14 17:40 | jilles | Section | => 2.8.1 Consequences of Shell Errors, 2.14 dot, 2.14 eval |
| 2011-05-14 17:40 | jilles | Page Number | => 2315,2341,2343 |
| 2011-05-14 17:40 | jilles | Line Number | => 73050-73051,74053,74110 |
| 2011-05-16 09:14 | geoffclare | Relationship added | related to 0000114 |
| 2011-05-19 15:37 | ajosey | Interp Status | => --- |
| 2011-05-19 15:37 | ajosey | Resolution | Open => Accepted |
| 2011-05-19 16:02 | ajosey | Note Added: 0000786 | |
| 2011-05-19 16:02 | ajosey | Severity | Editorial => Objection |
| 2011-05-19 16:02 | ajosey | Resolution | Accepted => Open |
| 2011-05-19 16:26 | Don Cragun | Note Added: 0000787 | |
| 2011-05-19 16:26 | Don Cragun | Status | Under Review => Closed |
| 2011-05-19 16:26 | Don Cragun | Resolution | Open => Rejected |
| 2011-05-19 16:29 | Don Cragun | Note Edited: 0000787 | |
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