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, 7 deletions

diff --git a/usr.bin/mandoc/mdoc_validate.c b/usr.bin/mandoc/mdoc_validate.c
index 7fed23dc8b2..228df954fac 100644
--- a/usr.bin/mandoc/mdoc_validate.c
+++ b/usr.bin/mandoc/mdoc_validate.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_validate.c,v 1.67 2010/07/31 21:43:07 schwarze Exp $ */
+/*	$Id: mdoc_validate.c,v 1.68 2010/08/20 00:53:35 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -477,12 +477,8 @@ check_text(struct mdoc *m, int ln, int pos, char *p)
 		if (c) {
 			p += c - 1;
 			pos += c - 1;
-			continue;
-		}
-
-		c = mdoc_pmsg(m, ln, pos, MANDOCERR_BADESCAPE);
-		if ( ! (MDOC_IGN_ESCAPE & m->pflags) && ! c)
-			return(c);
+		} else
+			mdoc_pmsg(m, ln, pos, MANDOCERR_BADESCAPE);
 	}
 
 	return(1);