PR/52641 CVS commit: src/bin/sh

["Robert Elz" <kre%netbsd.org@localhost>]

The following reply was made to PR bin/52641; it has been noted by GNATS.

From: "Robert Elz" <kre%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/52641 CVS commit: src/bin/sh
Date: Mon, 23 Oct 2017 10:52:07 +0000

 Module Name:	src
 Committed By:	kre
 Date:		Mon Oct 23 10:52:07 UTC 2017
 
 Modified Files:
 	src/bin/sh: jobs.c
 
 Log Message:
 PR bin/52640  PR bin/52641
 
 Don't delete jobs from the jobs table merely because they finished,
 if they are not the job we are waiting upon.   (bin/52640 part 1)
 
 In a sub-shell environment, don't allow wait to find jobs from the
 parent shell that had already exited (before the sub-shell was
 created) and return status for them as if they are our children.
 (bin/52640 part 2)
 
 Don't have the "jobs" command also be an implicit "wait" command
 in non-interactive shells.  (bin/52641)
 
 Use WCONTINUED (when it exists) so we can report on stopped jobs that
 "mysteriously" move back to running state without the user issuing
 a "bg" command (eg: kill -CONT <pid>)   Previously they would keep
 being reported as stopped until they exited.
 
 When a job is detected as having changed status just as we're
 issuing a "jobs" command (i.e.: the change occurred between the last
 prompt and the jobs command being entered) don't report it twice,
 once from the status change, and then again in the jobs command
 output.   Once is enough (keep the jobs output, suppress the other).
 
 Apply some sanity to the way jobs_invalid is processed - ignore it
 in getjob() instead of just ignoring it most of the time there, and
 instead always check it before calling getjob() in situations where
 we can handle only children of the current shell.  This allows the
 (totally broken) save/clear/restore of jobs_invalid in jobscmd() to
 be done away with (previously an error while in the clear state would
 have left jobs_invalid incorrectly cleared - shouldn't have mattered
 since jobs_invalid => subshell => error causes exit, but better to be safe).
 
 Add/improve the DEBUG more tracing.
 
 XXX pullup -8
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.90 -r1.91 src/bin/sh/jobs.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.