CVS log for src/usr.bin/m4/trace.c

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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.

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'.

sync with head

Use C89 function definitions

use TOKEN_LINE from MirBSD

resolve conflicts.

Import new m4 from OpenBSD.

Pull up revision 1.5 (requested by jmc in ticket #527):
Completely rework how tools/compat is done. Purge all uses/references to
_NETBSD_SOURCE as this makes cross building from older/newer versions of
NetBSD harder, not easier (and also makes the resulting tools 'different')
Wrap all required code with the inclusion of nbtool_config.h, attempt to
only use POSIX code in all places (or when reasonable test w. configure and
provide definitions: ala u_int, etc).
Reviewed by lukem. Tested on FreeBSD 4.9, Redhat Linux ES3, NetBSD 1.6.2 x86
NetBSD current (x86 and amd64) and Solaris 9.
Fixes PR's: PR#17762 PR#25944

Completely rework how tools/compat is done. Purge all uses/references to
_NETBSD_SOURCE as this makes cross building from older/newer versions of
NetBSD harder, not easier (and also makes the resulting tools 'different')

Wrap all required code with the inclusion of nbtool_config.h, attempt to
only use POSIX code in all places (or when reasonable test w. configure and
provide definitions: ala u_int, etc).

Reviewed by lukem. Tested on FreeBSD 4.9, Redhat Linux ES3, NetBSD 1.6.2 x86
NetBSD current (x86 and amd64) and Solaris 9.

Fixes PR's: PR#17762 PR#25944

Make compilable from src/tools/m4 on non-NetBSD hosts.

Need <string.h> for strcmp() prototype (noticed by gcc 3.1).

Whitespace nit.

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.