[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Bash 5.2 SHLVL change and autoconf test failures
|
From: |
Chet Ramey |
|
Subject: |
Re: Bash 5.2 SHLVL change and autoconf test failures |
|
Date: |
Thu, 29 Sep 2022 11:19:52 -0400 |
|
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 |
On 9/28/22 11:25 PM, Xi Ruoyao wrote:
(Sorry for cross posting, but the topic is related to both side)
In Bash-5.2 there is a change:
"ff. Some fixes to how subshells modify $SHLVL."
The single change affects pipelines for which bash optimizes out a second
fork, so it doesn't decrement $SHLVL twice. It comes from this 2020 report:
https://lists.gnu.org/archive/html/help-bash/2020-10/msg00012.html
(the ssh aspect of this report is a red herring).
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/