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| ID | Category | Severity | Type | Date Submitted | Last Update | ||
| 0000935 | [1003.1(2013)/Issue7+TC1] Shell and Utilities | Editorial | Enhancement Request | 2015-04-09 15:17 | 2022-09-15 16:00 | ||
| Reporter | rhansen | View Status | public | ||||
| Assigned To | |||||||
| Priority | normal | Resolution | Accepted As Marked | ||||
| Status | Closed | ||||||
| Name | Richard Hansen | ||||||
| Organization | BBN | ||||||
| User Reference | |||||||
| Section | 2.9.1.1 Command Search and Execution | ||||||
| Page Number | 2339 | ||||||
| Line Number | 74384 | ||||||
| Interp Status | Approved | ||||||
| Final Accepted Text | See Note: 0002614. | ||||||
| Summary | 0000935: warn users away from naming functions after traditional built-ins | ||||||
| Description |
Many shells have additional built-ins beyond the standard utilities, and don't allow a user to define a shell function with the same name as the built-in. Add a list of traditional built-in utilities. This bug is intended for Issue 7 TC1, so the list should be non-normative. A separate bug targeted for Issue 8 should be filed to make this list normative (reserved names). |
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| Desired Action |
Between 1.a. and 1.b. add a note warning the user away from using the following names (specific text to be provided later): alloc autoload bind bindkey builtin bye caller cap chdir (alias for cd) clone comp* (anything begining with comp) - but not compress? NO: use the explicit list: comparguments compcall compctl compdescribe compfiles compgen compgroups complete compquote comptags comptry compvalues declare dirs disable disown dosh echotc echoti help Note that "help" is part of the SCCS utilities on a historic UNIX system history? hist? let local login logout map mapfile pushd popd readarray repeat savehistory source (already reserved?) shopt stop suspend (needs to be intrinsic) times typeset whence |
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| Tags | tc2-2008 | ||||||
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Notes |
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(0002614) Don Cragun (manager) 2015-04-09 16:26 edited on: 2015-04-12 21:45 |
Interpretation response ------------------------ The standard states by omission that many utility names are available for use by application writers, and conforming implementations must conform to this. However, concerns have been raised about this which are being referred to the sponsor. Rationale: ------------- Almost all, if not all, existing shells have built-in utilities or keywords that are not defined by the standard. Many application writers already know to avoid these names, but the standard needs to clearly specify that these names are not available. Notes to the Editor (not part of this interpretation): ------------------------------------------------------- On page 2339 between lines 74383 and 74384, insert a new item: b. If the command name matches the name of a utility listed in the following table, the results are unspecified: alloc and renumber 1.b, c, and d to 1.c, d, and e. On page 3693 after line 126371 insert a new paragraph: Various historical implementations have used the names in item 1.b. as built-ins or reserved words. This standard does not specify their behavior, but their existance means that it is important for portable applications to avoid giving functions (or utilities in PATH) those names because the function (or utility in PATH) might not be executed as expected. |
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(0002620) jilles (reporter) 2015-04-12 21:26 |
The name "times" should not be here, since it is a standard special builtin. |
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(0002621) Don Cragun (manager) 2015-04-12 21:45 |
Re beignet:2620: You are correct. The entry for "times" will be removed from the list in a few minutes. |
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(0002627) ajosey (manager) 2015-04-17 09:51 |
Interpretation proposed: 17 April 2015 |
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(0002672) ajosey (manager) 2015-05-18 09:07 |
Interpretation Approved: 18 May 2015 |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2015-04-09 15:17 | rhansen | New Issue | |
| 2015-04-09 15:17 | rhansen | Name | => Richard Hansen |
| 2015-04-09 15:17 | rhansen | Organization | => BBN |
| 2015-04-09 15:17 | rhansen | Section | => 2.9.1.1 Command Search and Execution |
| 2015-04-09 15:17 | rhansen | Page Number | => 2339 |
| 2015-04-09 15:17 | rhansen | Line Number | => 74384 |
| 2015-04-09 15:17 | rhansen | Interp Status | => --- |
| 2015-04-09 15:17 | rhansen | Relationship added | related to 0000901 |
| 2015-04-09 16:26 | Don Cragun | Note Added: 0002614 | |
| 2015-04-09 16:28 | Don Cragun | Interp Status | --- => Pending |
| 2015-04-09 16:28 | Don Cragun | Final Accepted Text | => See Note: 0002614. |
| 2015-04-09 16:28 | Don Cragun | Status | New => Interpretation Required |
| 2015-04-09 16:28 | Don Cragun | Resolution | Open => Accepted As Marked |
| 2015-04-09 16:28 | Don Cragun | Tag Attached: tc2-2008 | |
| 2015-04-09 17:02 | Don Cragun | Note Edited: 0002614 | |
| 2015-04-12 21:26 | jilles | Note Added: 0002620 | |
| 2015-04-12 21:45 | Don Cragun | Note Added: 0002621 | |
| 2015-04-12 21:45 | Don Cragun | Note Edited: 0002614 | |
| 2015-04-17 09:51 | ajosey | Interp Status | Pending => Proposed |
| 2015-04-17 09:51 | ajosey | Note Added: 0002627 | |
| 2015-05-18 09:07 | ajosey | Interp Status | Proposed => Approved |
| 2015-05-18 09:07 | ajosey | Note Added: 0002672 | |
| 2019-06-10 08:54 | agadmin | Status | Interpretation Required => Closed |
| 2022-09-15 16:00 | geoffclare | Relationship added | related to 0000465 |
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