CVS commit: src/bin/sh

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

Module Name:    src
Committed By:   kre
Date:           Wed Dec 12 11:51:33 UTC 2018

Modified Files:
        src/bin/sh: sh.1 var.c

Log Message:
Implement:
        readonly -q VAR...
        readonly -p VAR...
        export -q [-x] VAR...
        export -p [-x] VAR...

all available only in !SMALL shells - and while here, limit
"export -x" to full sized shells as well.

Also, do a better job of arg checking and validating of the
export and readonly commands (which is really just one built-in)
and of issuing error messages when something bogus is detected.

Since these commands are special builtin commands, any error
causes shell exit (for non-interactive shells).


To generate a diff of this commit:
cvs rdiff -u -r1.212 -r1.213 src/bin/sh/sh.1
cvs rdiff -u -r1.73 -r1.74 src/bin/sh/var.c

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