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, 2 insertions, 6 deletions

diff --git a/mdoc_validate.c b/mdoc_validate.c
index ed5988ce..c500b945 100644
--- a/mdoc_validate.c
+++ b/mdoc_validate.c
@@ -481,12 +481,8 @@ 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);