Clean up warnings related to macros and nesting.

* Hierarchical naming of enum mandocerr items.
* Improve the wording to make it comprehensible.
* Mention the offending macro.
* Garbage collect one chunk of ancient, long unreachable code.

5 files changed, 18 insertions, 25 deletions

diff --git a/man_validate.c b/man_validate.c
index def1e47d..72d8d023 100644
--- a/man_validate.c
+++ b/man_validate.c
@@ -479,7 +479,7 @@ post_nf(CHKARGS)
 {
 
 	if (MAN_LITERAL & man->flags)
-		man_nmsg(man, n, MANDOCERR_SCOPEREP);
+		man_nmsg(man, n, MANDOCERR_NF_SKIP);
 
 	man->flags |= MAN_LITERAL;
 	return(1);
@@ -490,7 +490,7 @@ post_fi(CHKARGS)
 {
 
 	if ( ! (MAN_LITERAL & man->flags))
-		man_nmsg(man, n, MANDOCERR_WNOSCOPE);
+		man_nmsg(man, n, MANDOCERR_FI_SKIP);
 
 	man->flags &= ~MAN_LITERAL;
 	return(1);
diff --git a/mandoc.h b/mandoc.h
index 5f9ec2d2..4b39e30b 100644
--- a/mandoc.h
+++ b/mandoc.h
@@ -74,12 +74,13 @@ enum	mandocerr {
 	MANDOCERR_MACRO_OBS, /* obsolete macro: macro */
 	MANDOCERR_PAR_SKIP, /* skipping paragraph macro: macro ... */
 	MANDOCERR_PAR_MOVE, /* moving paragraph macro out of list: macro */
-	MANDOCERR_IGNNS, /* skipping no-space macro */
-	MANDOCERR_SCOPENEST, /* blocks badly nested */
+	MANDOCERR_NS_SKIP, /* skipping no-space macro */
+	MANDOCERR_BLOCK_NEST, /* blocks badly nested: macro ... */
 	MANDOCERR_CHILD, /* child violates parent syntax */
-	MANDOCERR_NESTEDDISP, /* nested displays are not portable */
-	MANDOCERR_SCOPEREP, /* already in literal mode */
-	MANDOCERR_LINESCOPE, /* line scope broken */
+	MANDOCERR_BD_NEST, /* nested displays are not portable: macro ... */
+	MANDOCERR_FI_SKIP, /* fill mode already enabled, skipping .fi */
+	MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping .nf */
+	MANDOCERR_LINESCOPE, /* line scope broken: macro breaks macro */
 
 	/* related to missing macro arguments */
 	MANDOCERR_MACROEMPTY, /* skipping empty macro */
@@ -88,7 +89,6 @@ enum	mandocerr {
 	MANDOCERR_LISTFIRST, /* list type must come first */
 	MANDOCERR_NOWIDTHARG, /* tag lists require a width argument */
 	MANDOCERR_FONTTYPE, /* missing font type */
-	MANDOCERR_WNOSCOPE, /* skipping end of block that is not open */
 
 	/* related to bad macro arguments */
 	MANDOCERR_IGNARGV, /* skipping argument */
diff --git a/mdoc_macro.c b/mdoc_macro.c
index 502d06ef..36aa8b82 100644
--- a/mdoc_macro.c
+++ b/mdoc_macro.c
@@ -528,7 +528,7 @@ make_pending(struct mdoc_node *broken, enum mdoct tok,
 			taker->pending = broken->pending;
 		}
 		broken->pending = breaker;
-		mandoc_vmsg(MANDOCERR_SCOPENEST, mdoc->parse, line, ppos,
+		mandoc_vmsg(MANDOCERR_BLOCK_NEST, mdoc->parse, line, ppos,
 		    "%s breaks %s", mdoc_macronames[tok],
 		    mdoc_macronames[broken->tok]);
 		return(1);
@@ -1354,18 +1354,9 @@ blk_part_imp(MACRO_PROT_ARGS)
 			return(1);
 		}
 	}
+	assert(n == body);
 
-	/*
-	 * If we can't rewind to our body, then our scope has already
-	 * been closed by another macro (like `Oc' closing `Op').  This
-	 * is ugly behaviour nodding its head to OpenBSD's overwhelming
-	 * crufty use of `Op' breakage.
-	 */
-	if (n != body)
-		mandoc_vmsg(MANDOCERR_SCOPENEST, mdoc->parse, line,
-		    ppos, "%s broken", mdoc_macronames[tok]);
-
-	if (n && ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
+	if ( ! rew_sub(MDOC_BODY, mdoc, tok, line, ppos))
 		return(0);
 
 	/* Standard appending of delimiters. */
@@ -1375,7 +1366,7 @@ blk_part_imp(MACRO_PROT_ARGS)
 
 	/* Rewind scope, if applicable. */
 
-	if (n && ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
+	if ( ! rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos))
 		return(0);
 
 	/* Move trailing .Ns out of scope. */
diff --git a/mdoc_validate.c b/mdoc_validate.c
index a0dad19c..cf00a0f4 100644
--- a/mdoc_validate.c
+++ b/mdoc_validate.c
@@ -591,7 +591,9 @@ pre_display(PRE_ARGS)
 				break;
 
 	if (node)
-		mdoc_nmsg(mdoc, n, MANDOCERR_NESTEDDISP);
+		mandoc_vmsg(MANDOCERR_BD_NEST,
+		    mdoc->parse, n->line, n->pos,
+		    "%s in Bd", mdoc_macronames[n->tok]);
 
 	return(1);
 }
@@ -1903,7 +1905,7 @@ post_ns(POST_ARGS)
 {
 
 	if (MDOC_LINE & mdoc->last->flags)
-		mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_IGNNS);
+		mdoc_nmsg(mdoc, mdoc->last, MANDOCERR_NS_SKIP);
 	return(1);
 }
 
diff --git a/read.c b/read.c
index 1672efb9..ffb650f3 100644
--- a/read.c
+++ b/read.c
@@ -122,7 +122,8 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"blocks badly nested",
 	"child violates parent syntax",
 	"nested displays are not portable",
-	"already in literal mode",
+	"fill mode already enabled, skipping .fi",
+	"fill mode already disabled, skipping .nf",
 	"line scope broken",
 
 	/* related to missing macro arguments */
@@ -132,7 +133,6 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"list type must come first",
 	"tag lists require a width argument",
 	"missing font type",
-	"skipping end of block that is not open",
 
 	/* related to bad macro arguments */
 	"skipping argument",