View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000262 | 1003.1(2008)/Issue 7 | Shell and Utilities | public | 2010-06-17 15:19 | 2013-04-16 13:06 |
| Reporter | eblake | Assigned To | ajosey | ||
| Priority | normal | Severity | Objection | Type | Clarification Requested |
| Status | Closed | Resolution | Accepted As Marked | ||
| Name | Eric Blake | ||||
| Organization | Red Hat | ||||
| User Reference | ebb.sed | ||||
| Section | sed | ||||
| Page Number | 3153 | ||||
| Line Number | 104774 | ||||
| Interp Status | Approved | ||||
| Final Accepted Text | 0000262:0000434 | ||||
| Summary | 0000262: sed with multiple -e options | ||||
| Description | In practice, there are situations where it is difficult to write a sed script with embedded newlines, such as in a makefile rule. Most implementations of sed therefore support the notion of combining multiple -e options with newlines between the portions; so long as the final concatenated script is valid. However, the standard currently requires that each -e option have a valid script in isolation. http://lists.gnu.org/archive/html/bug-gnu-utils/2010-06/msg00047.html | ||||
| Desired Action | At line 104763, change: sed [−n] −e script [−e script]... [−f script_file]... [file...] sed [−n] [−e script]... −f script_file [−f script_file]... [file...] to: sed [−n] −e script_frag [−e script_frag]... [−f script_file]... [file...] sed [−n] [−e script_frag]... −f script_file [−f script_file]... [file...] At line 104774, change: -e script Add the editing commands specified by the script option-argument to the end of the script of editing commands. The script option-argument shall have the same properties as the script operand, described in the OPERANDS section. to: -e script_frag Add the text specified by the script_frag option-argument, along with a newline, to the end of the script of editing commands. The final resulting script after all concatenations have been performed shall have the same properties as the script operand, described in the OPERANDS section. At line 105140, add a new paragraph to RATIONALE: When multiple -e script_frag options are present, an individual script_frag need not be a valid script so long as the concatenation of all fragments, with newline separators, is valid. This allows usages such as sed -e '1{' -e } inside of a makefile, where it is difficult to insert a manual newline. | ||||
| Tags | tc1-2008 | ||||
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The proposed change: -e script_frag Add the text specified by the script_frag option-argument, along with a newline, to the end of the script of editing commands. Doesn't really state what I think is desired, which according to the (proposed) rationale is that newlines are separators and not terminators. That is, with a single -e option no newlines are added to the script (and thus "sed [-n] -e script [file...]" behaves the same as "sed [-n] script [file...]". Also note that currently, "sed [-n] -e script script [file...]" is not allowed, so the phrase "add to the script" is misleading. Perhaps a better wording would be this: -e script The script option-argument shall have the same properties as the script operand, described in the OPERANDS section. If multiple instances of this option and argument are used, the script arguments are concatenated together with a newline separator between each fragment. |
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Interpretation response ------------------------ The standard states the requirements for sed, and conforming implementations must conform to this. However, concerns have been raised about this which are being referred to the sponsor. Rationale: ------------- None. Notes to the Editor (not part of this interpretation): ------------------------------------------------------- Change -e script Add the editing commands specified by the script option-argument to the end of the script of editing commands. The script option-argument shall have the same properties as the script operand, described in the OPERANDS section. -f script_file Add the editing commands in the file script_file to the end of the script. -n [...] Multiple -e and -f options may be specified. All commands shall be added to the script in the order specified, regardless of their origin. to -e script Add the editing commands specified by the script option-argument to the end of the script of editing commands. -f script_file Add the editing commands in the file script_file to the end of the script of editing commands. -n [...] If any -e or -f options are specified, the script of editing commands shall initially be empty. The commands specified by each -e or -f option shall be added to the script in the order specified. When each addition is made, if the previous addition (if any) was from a -e option, a <newline> shall be inserted before the new addition. The resulting script shall have the same properties as the script operand, described in the OPERANDS section. |
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Comments/objections on the proposed interpretation are due by 31 Aug 2010 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2010-06-17 15:19 | eblake | New Issue | |
| 2010-06-17 15:19 | eblake | Status | New => Under Review |
| 2010-06-17 15:19 | eblake | Assigned To | => ajosey |
| 2010-06-17 15:19 | eblake | Name | => Eric Blake |
| 2010-06-17 15:19 | eblake | Organization | => Red Hat |
| 2010-06-17 15:19 | eblake | User Reference | => ebb.sed |
| 2010-06-17 15:19 | eblake | Section | => sed |
| 2010-06-17 15:19 | eblake | Page Number | => 3153 |
| 2010-06-17 15:19 | eblake | Line Number | => 104774 |
| 2010-06-17 15:27 | msbrown | Interp Status | => --- |
| 2010-06-17 15:27 | msbrown | Final Accepted Text | => see: Desired Action |
| 2010-06-17 15:27 | msbrown | Type | Error => Enhancement Request |
| 2010-06-17 15:27 | msbrown | Status | Under Review => Resolved |
| 2010-06-17 15:27 | msbrown | Resolution | Open => Future Enhancement |
| 2010-06-17 19:08 | wpollock | Note Added: 0000430 | |
| 2010-06-24 16:07 | geoffclare | Interp Status | --- => Pending |
| 2010-06-24 16:07 | geoffclare | Final Accepted Text | see: Desired Action => |
| 2010-06-24 16:07 | geoffclare | Note Added: 0000434 | |
| 2010-06-24 16:07 | geoffclare | Type | Enhancement Request => Clarification Requested |
| 2010-06-24 16:07 | geoffclare | Status | Resolved => Interpretation Required |
| 2010-06-24 16:07 | geoffclare | Resolution | Future Enhancement => Accepted As Marked |
| 2010-06-24 16:08 | geoffclare | Final Accepted Text | => 0000262:0000434 |
| 2010-07-30 09:31 | ajosey | Interp Status | Pending => Proposed |
| 2010-07-30 09:31 | ajosey | Note Added: 0000511 | |
| 2010-09-03 06:23 | ajosey | Interp Status | Proposed => Approved |
| 2010-09-24 16:12 | geoffclare | Tag Attached: tc1-2008 | |
| 2013-04-16 13:06 | ajosey | Status | Interpretation Required => Closed |
| 2015-06-18 16:15 | eblake | Relationship added | related to 0000944 |
| 2015-06-18 16:37 | eblake | Relationship added | related to 0000269 |
