CVS commit: src/bin/sh

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

Module Name:    src
Committed By:   kre
Date:           Mon Jan 31 16:54:28 UTC 2022

Modified Files:
        src/bin/sh: cd.c histedit.c

Log Message:
Add some comments explaining accesses to the environment via
getenv()/setenv()/unsetenv() which manipulate the envornoment
the shell was passed at entry.

These are a little odd in sh as that environment is copied into
the shell's internal variable data struct at shell startup, and
normally never accessed after that - in builtin commands (test.
printf, ...) getenv() is #defined to become an internal sh lookup
function instead, so even those never use the startup environment).

NFCI


To generate a diff of this commit:
cvs rdiff -u -r1.52 -r1.53 src/bin/sh/cd.c
cvs rdiff -u -r1.57 -r1.58 src/bin/sh/histedit.c

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