Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

m4: import from OpenBSD

By deraadt@

mkstemp() returns -1 on failure

Obtained from: OpenBSD

m4: import from OpenBSD

patch by espie@

replace sloppy parsing of numeric values with strtonum (incr, decr, divert)

still use integers, so use the natural bounds for these.

POSIX says m4 should error when these use non numeric values, and now they
do.

okay millert@

Obtained from: OpenBSD

m4: import patch from OpenBSD

by espie@
ifelse is special, fix argv parsing to avoid segfault

problem noticed by Matthew Green (netbsd), slightly different fix
so that argc counting makes more sense.

we might want to warn on wrong number of parameters later, but this is
somewhat inconsistent depending on the builtin right now.

okay millert@

Obtained from: OpenBSD

Import from OpenBSD: -E flag

Add -E flag (make warnings fatal), following the behavior of GNU m4 1.4.9+

Help and direction millert@ espie@ anton@ deraadt@

ok espie@

Obtained from: OpenBSD

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

usr.bin: minor spelling fixes on comments.

No functional change.

Synchronize m4(1) with OpenBSD

Sync with OpenBSD
This brings:
- check for integer overflows in custom allocs
- fix potential integer overflows in memory allocation
- annotate regexp error messages with source string
- better error handling in mkstemp/unlink/fdopen logic

Reduce diff with upstream.

Improve m4 compatibility with GNU m4 extension ** (exponent)

Submitted by: Marc Espie (espie@OpenBSD.org)
Approved by: des@ (mentor)

Unbreak the build after r228697 adding the { } block to make clear which
if the else belongs to.

Reimplement support for the ** (exponent) gnu extension, make it available thought the -g (mimic gnu) option

Reviewed by: cognet
Approved by: cognet
Discussed with: espie@OpenBSD.org (upstream)

Synchronize with laster version of m4 from OpenBSD and NetBSD
This bring better compatibility with gnum4

Reviewed by: cognet
Approved by: cognet
Obtained from: OpenBSD, NetBSD

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

Store a pointer to "null" in struct ndblock's defn member instead of a
duplicate allocated on the heap; the address defn points to is significant,
and is checked against the address of "null" in certain conditionals.

PR: 59883
MFC after: 1 week

Flush streams before calling system() so that the output appears in the
right place in the output stream when redirected to a file (when full
buffering is enabled). Noticed by schweikh on freebsd-standards.

Kill extraneous whitespace.

Revert vendor identifiers, and #if 0 what is #if 0/#else for OpenBSD.

Add __FBSDID() properly.

Requested by: bde, mike

Merge local changes again, against ANSIfied m4(1).

Import OpenBSD m4(1) as of April 26. Mostly ANSIfication changes.

Crank WARNS.

Cast sizeof() to (int), as it's being compared against an int, not a size_t.
If i is changed to a size_t, it means the logic must be slightly changed later
in the flow, where --i is checked to be >= 0. I am not sure I want to make a
logic change to account for clearing up a warning, when an aesthetic one will
keep from modifying the logic.

Other harmless casts, that I think I've made in the right directions.

Make gpbc() an inline function, rather than an obfuscated macro, make its
scratch space local, rather than global. The previous macro used a dirty
hack (logical AND in place of a conditional) which would lead GCC to throw
a fit (rightly so) as the logical check, as well as the incrementation of
a variable, were not used for anything.

const'ify a few places where gcc3 yells. xstrdup() some global consts in
places where we xstrdup() when not using consts, but tried to assign them
to non-consts before.

Don't use execv(2) if we don't have the kind of arguments it wants.

Reviewed by: asmodai obrien tjr
Submitted by: tjr (a gcc3 build log)

Bring OpenBSD m4(1) off of the OPENBSD vendor branch, and add the -s option,
$FreeBSD$ identifiers, and fix initialisation to stderr to happen in a function
as stderr is not the same in CURRENT as in OpenBSD.

Reviewed by: obrien

This adds support for -s to the m4(1) utility, which causes #line directives
to be emitted as per the C preprocessor. It updates the manual page in
regards to standards accordingly.

PR: standards/36075
Submitted by: tjr
Reviewed by: mike
MFC after: 1 week

Import OpenBSD m4 as of today.

Remove the local basename in favor of the libc version.
Remove xmalloc and xstrdup and do the error checking at the place of use.

Make sure the len() builtin always returns an answer. Previously,
len(`') didn't return an answer. Now it returns 0.

PR: bin/12942
MFC after: 5 days

String operations could silently truncate long strings, leaving the output
corrupted. Mark's patch fixes this be removing the MAXTOK limitation on
substring operations and allowing the putback buffer size to be the limiting
factor. If the putback buffer size if reached, m4 gives an error instead of
silently truncating the string.

PR: bin/26619
Submitted by: Mark Peek <mark-ml@whistle.com>
MFC after: 5 days

Fix format string warnings.

Submitted by: nra
Obtained from: NetBSD

$Id$ -> $FreeBSD$

Make the builtin unix macro work as it should (well like Solaris's,
GNU's, and OSF1's).

divnum is no longer silently restricted to the range 0..9. (cf: 4098)

changequote(,) is now a synonym for changequote(). (cf: 803)

buffer size for translit() enlarged to handle a full string

PR: 803, 4098

Use err(3) instead of local redefinition. Remove progname.

Finish importing Lite2's src/usr.bin, except for ex, diff, grep, mail,
pascal and vmstat.sparc. All changed files on the vendor branch should
already have been imported.

Make the $@ macro behave as described in the man page.

This patch has been submitted by Andreas Burmester (i think) on the
German Usenet long ago. Andreas told me that our m4 has quite more
subtle bugs, so we might consider using NGU m4 instead.

Remove trailing whitespace.

1) kill temp diver upon exit
2) add logical ops, fix ! precedence, implement unary +, fix exp
Obtained from: NetBSD

Fix syscmd() output out of sync
Submitted by: smp@clem.systemsix.com

Make m4 more 8bit clean.
Don't use is*(EOF)
This fix core dump when LANG setted to 8bit wide charset
and ENABLE_STARTUP_LOCALE

BSD 4.4 Lite Usr.bin Sources