0001580: add a hint that env vars with invalid names might be passed on to the environments of programs/utilities

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Category

Severity

Type

Date Submitted

Last Update

0001580

[Issue 8 drafts] Shell and Utilities

Editorial

Enhancement Request

2022-04-24 23:49

2022-05-26 10:22

Reporter

calestyo

View Status

public

Assigned To

Priority

normal

Resolution

Accepted

Status

Applied

Product Version

Draft 2.1

Name

Christoph Anton Mitterer

Organization

User Reference

Section

2.12 Shell Execution Environment

Page Number

2351

Line Number

76080

Final Accepted Text

Summary

0001580: add a hint that env vars with invalid names might be passed on to the environments of programs/utilities

Description

This is from https://www.austingroupbugs.net/view.php?id=1561#c5808 [^] .

It was pointed out in that issue by KRE, that the standard allows but doesn't mandate (see 2.9.1.6 point (1a) AND (2a) in draft 2.1) environment variables that don't have a valid name (in the sense of 3.207 Name) to be exported by a shell to invoked programs/utilities.

2.9.1.6 point (1a) AND (2a) both read:

> It is unspecified whether environment variables that were
> passed to the shell when it was invoked, but were not used
> to initialize shell variables (see Section 2.5.3) because
> they had invalid names, are included in the environment
> passed to execl() and (if execl() fails as described above)
> to the new shell.

It may be reasonable to add this information to the list (following line 76070) of things passed on to such invoked programs/utilities.

Desired Action

For example, after line 76080 add another bullet item that repeats the relevant parts from 2.9.1.6:

* It is unspecified whether environment variables that
  were passed to the INVOKING shell when it was invoked itself,
  but were not used to initialize shell variables (see
  Section 2.5.3) because they had invalid names, are
  included in the INVOKED UTILITY’S environment.

Capital letters merely denote additions of mine.

Tags

tc3-2008

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Issue History
Date Modified	Username	Field	Change
2022-04-24 23:49	calestyo	New Issue
2022-04-24 23:49	calestyo	Name	=> Christoph Anton Mitterer
2022-04-24 23:49	calestyo	Section	=> 2.12 Shell Execution Environment
2022-04-24 23:49	calestyo	Page Number	=> 2351
2022-04-24 23:49	calestyo	Line Number	=> 76080
2022-05-05 15:33	Don Cragun	Status	New => Resolved
2022-05-05 15:33	Don Cragun	Resolution	Open => Accepted
2022-05-05 15:33	Don Cragun	Tag Attached: tc3-2008
2022-05-26 10:22	geoffclare	Status	Resolved => Applied

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