CVS log for src/usr.bin/m4/m4.1

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Keyword substitution: kv
Default branch: MAIN

Pull up following revision(s) (requested by uwe in ticket #981):

	usr.bin/m4/m4.1: revision 1.28
	usr.bin/m4/m4.1: revision 1.29
	usr.bin/m4/extern.h: revision 1.20
	usr.bin/m4/main.c: revision 1.49
	usr.bin/m4/m4.1: revision 1.30
	usr.bin/m4/trace.c: revision 1.9
	usr.bin/m4/main.c: revision 1.50

Try not to lose error output with --error-output.

Try to avoid the trap we set up ourselves while avoiding freopen(3).
When exit flushes and closes open streams it may close sfp first and
when it comes about to flush and close stderr, the descriptor is
already gone and we lose any buffered error output.  This actually
happens on some hosts, breaking --trace output used by autoconf.

Fix --error-output to be more like GNU m4.

GNU m4 --error-output is the same as -o despite the name.  It does NOT
affect warnings, error messages, and 'errprint' output so drop the
misguided bit of code that tried to freopen stderr without closing it
on failure.  Drop -e (which was our local invention) and make merge
--error-output with -o so that both set traceout.  Make trace_file()
preserve the old traceout on error and return error status so that the
caller can emit appropriate warning.

Do not yet support disabling tracing with an empty name, the rest of
the code is not ready, we don't do -o positionally and we don't have
`debugfile'.

Fix --error-output to be more like GNU m4.  It's a long version of -o.

Bump date for previous.

Use a date that is actually a real date.

Improve markup for better PostScript output.
Make sure quotes are right and copy-pastable even in UTF-8 output.

Use a date that is actually a real date.

Bump date for previous.

Fix --error-output to be more like GNU m4.  It's a long version of -o.

Fix some macros. Sort stuff some more.

Update documentation.

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

Better document eval, mentioning optional second and third arguments.
Requested by martin.
Bump date.

sync with HEAD

Use Mt for email addresses.

sync with head

Remove unnecessary Bk/Ek pairs from SYNOPSIS.
No effective change except where I used the opportunity to sort options
and/or option descriptions.

Improve/fix/deuglify markup.

Fix markup.

resolve conflicts.

Import new m4 from OpenBSD.

Sync with HEAD.

Third (and last) commit. See http://mail-index.netbsd.org/source-changes/2009/05/13/msg221222.html

Don't break scope for .Oo/.Oc to workaround ancient argument limit.

End sentence with a dot. From jmc@openbsd.

Add Ns where needed.

Replace Ql by Sq and Dq where appropriate.

.Nm does not need a dummy argument ("") before punctuation or
for correct formatting of the SYNOPSIS any longer.

Generate <>& symbolically. I'm avoiding .../dist/... directories for now.

Whitespace cleanup.

Document -o.

Pull in various changes from OpenBSD, most from Marc Espie, including:
* Provide some GNUisms as extensions.
* Provide dynamically growable string space.
* Make define(defn(foo)) work correctly for builtins.
(The current version is supposed to be capable of satisfying autoconf.)

All still relevant NetBSD changes have been preserved in this version, and
formatting and style fixes have been applied in various places.

Thanks to Masao Uebayashi <uebayasi@soum.co.jp> for pointing this out.

Uppercase Dt argument, correct AUTHORS section name.

Implement the very useful `-P' option from GNU's m4 (causes all builtin
macros to be prefixed with the string `m4_').

fix richard o'keefe's email address (will have to change for his new job, but the one i've used is at least valid...)

WARNSify, fix .Nm usage, getopt returns -1 not EOF, deprecate register

fix typo reported by Saitoh Masanobu in PR misc/3214.
also fixed .Nm usage, other typos

RCS ID police

Fix spelling error (Michael K. Sanders; PR #1617)

latest m4 from ozan.  now does the right thing w/respect to sendmail

Add RCS indentifiers.

baseline of new version of m4 supplied by Ozan Yigit, original author
of the broken m4 we had.  This is his stuff virgin + our Makefile.