CVS commit: src/bin/sh

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

Module Name:    src
Committed By:   kre
Date:           Sat Jun 17 10:46:34 UTC 2017

Modified Files:
        src/bin/sh: eval.c var.c var.h

Log Message:
Cosmetic changes to variable flags - make their values more suited
to my delicate sensibilities...  (NFC).

Arrange not to barf (ever) if some turkey makes _ readonly.  Do this
by adding a VNOERROR flag that causes errors in var setting to be
ignored (intended use is only for internal shell var setting, like of "_").
(nb: invalid var name errors ignore this flag, but those should never
occur on a var set by the shell itself.)

>From FreeBSD: don't simply discard memory if a variable is not set for
any reason (including because it is readonly) if the var's value had
been malloc'd.  Free it instead...


To generate a diff of this commit:
cvs rdiff -u -r1.146 -r1.147 src/bin/sh/eval.c
cvs rdiff -u -r1.59 -r1.60 src/bin/sh/var.c
cvs rdiff -u -r1.30 -r1.31 src/bin/sh/var.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.