CVS commit: src/bin/sh

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

Module Name:    src
Committed By:   kre
Date:           Wed Feb 27 04:10:56 UTC 2019

Modified Files:
        src/bin/sh: expand.c parser.c syntax.h

Log Message:
Finish the fixes from Feb 4 for handling of random data that
matches the internal CTL* chars.

The earlier fixes handled CTL* char values in var expansions,
but not in various other places they can occur (positional
parameters, $@ $* -- even potentially $0 and ~ expansions,
as well as byte strings generated from a \u in a $'' string).

These should all be correctly handled now.   There is a new
ISCTL() macro to make the test, rather than using the old
BASESYNTAX[c]==CCTL form (which us still a viable alternative)
as the new way allows compiler optimisations, and less mem
references, so it should be smaller and faster.

Also, be sure in all cases to remove any CTLESC (or other)
CTL* chars from all strings before they are made available
for any external use (there was one case missed - which didn't
matter when we weren't bothering to escape the CTL* chars at
all.)

XXX pullup-8 (will need to be via a patch) along with the Feb 4 fixes.


To generate a diff of this commit:
cvs rdiff -u -r1.130 -r1.131 src/bin/sh/expand.c
cvs rdiff -u -r1.166 -r1.167 src/bin/sh/parser.c
cvs rdiff -u -r1.11 -r1.12 src/bin/sh/syntax.h

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