Implement a simple, consistent user interface for error handling.

We now have sufficient practical experience to know what we want,
so this is intended to be final:
- provide -Wlevel (warning, error or fatal) to select what you care about
- provide -Wstop to stop after parsing a file with warnings you care about
- provide consistent exit status codes for those warnings you care about
- fully document what warnings, errors and fatal errors mean
- remove all other cruft from the user interface, less is more:
- remove all -f knobs along with the whole -f option
- remove the old -Werror because calling warnings "fatal" is silly
- always finish parsing each file, unless fatal errors prevent that
This commit also includes a couple of related simplifications behind
the scenes regarding error handling.
Feedback and OK  kristaps@;  Joerg Sonnenberger (NetBSD) and
Sascha Wildner (DragonFly BSD) agree with the general direction.

1 files changed, 3 insertions, 8 deletions

diff --git a/mdoc.3 b/mdoc.3
index b141eeaa..3620b155 100644
--- a/mdoc.3
+++ b/mdoc.3
@@ -1,4 +1,4 @@
-.\"	$Id: mdoc.3,v 1.48 2010/07/07 15:04:54 kristaps Exp $
+.\"	$Id: mdoc.3,v 1.49 2010/08/20 01:02:07 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: July 7 2010 $
+.Dd $Mdocdate: August 20 2010 $
 .Dt MDOC 3
 .Os
 .Sh NAME
@@ -37,7 +37,6 @@
 .Fo mdoc_alloc
 .Fa "struct regset *regs"
 .Fa "void *data"
-.Fa "int pflags"
 .Fa "mandocmsg msgs"
 .Fc
 .Ft int
@@ -124,10 +123,6 @@ The
 .Fa data
 pointer is passed to
 .Fa msgs .
-The
-.Fa pflags
-arguments are defined in
-.Pa mdoc.h .
 Returns NULL on failure.
 If non-NULL, the pointer must be freed with
 .Fn mdoc_free .
@@ -338,7 +333,7 @@ int line;
 
 bzero(&regs, sizeof(struct regset));
 line = 1;
-mdoc = mdoc_alloc(&regs, NULL, 0, NULL);
+mdoc = mdoc_alloc(&regs, NULL, NULL);
 buf = NULL;
 alloc_len = 0;