mdocml: Merge schwarze@'s relaxation of scope-breaking rules: allow

mdocml: Merge schwarze@'s relaxation of scope-breaking rules: allow

[kristaps]

Log Message:
-----------
Merge schwarze@'s relaxation of scope-breaking rules: allow implicit
ending of scopes and drop stray scope-endings.

Modified Files:
--------------
    mdocml:
        main.c
        mandoc.h
        mdoc.c
        mdoc_macro.c

Revision Data
-------------
Index: mdoc_macro.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mdoc_macro.c,v
retrieving revision 1.97
retrieving revision 1.98
diff -Lmdoc_macro.c -Lmdoc_macro.c -u -p -r1.97 -r1.98
--- mdoc_macro.c
+++ mdoc_macro.c
@@ -34,6 +34,7 @@ enum	rew {	/* see rew_dohalt() */
 	REWIND_NONE,
 	REWIND_THIS,
 	REWIND_MORE,
+	REWIND_FORCE,
 	REWIND_LATER,
 	REWIND_ERROR
 };
@@ -320,6 +321,7 @@ rew_alt(enum mdoct tok)
  *   inside *p, so there is no need to rewind anything at all.
  * REWIND_THIS: *p matches tok, so rewind *p and nothing else.
  * REWIND_MORE: *p is implicit, rewind it and keep searching for tok.
+ * REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p.
  * REWIND_LATER: *p is explicit and still open, postpone rewinding.
  * REWIND_ERROR: No tok block is open at all.
  */
@@ -413,16 +415,13 @@ rew_dohalt(enum mdoct tok, enum mdoc_typ
 		return(REWIND_MORE);
 
 	/*
-	 * Partial blocks allow delayed rewinding by default.
+	 * By default, closing out full blocks
+	 * forces closing of broken explicit blocks,
+	 * while closing out partial blocks
+	 * allows delayed rewinding by default.
 	 */
-	if (&blk_full != mdoc_macros[tok].fp)
-		return (REWIND_LATER);
-
-	/*
-	 * Full blocks can only be rewound when matching
-	 * or when there is an explicit rule.
-	 */
-	return(REWIND_ERROR);
+	return (&blk_full == mdoc_macros[tok].fp ?
+	    REWIND_FORCE : REWIND_LATER);
 }
 
 
@@ -513,9 +512,7 @@ make_pending(struct mdoc_node *broken, e
 	/*
 	 * Found no matching block for tok.
 	 * Are you trying to close a block that is not open?
-	 * XXX Make this non-fatal.
 	 */
-	mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTNOSCOPE);
 	return(0);
 }
 
@@ -533,17 +530,22 @@ rew_sub(enum mdoc_type t, struct mdoc *m
 			return(1);
 		case (REWIND_THIS):
 			break;
+		case (REWIND_FORCE):
+			mdoc_vmsg(m, MANDOCERR_SCOPEBROKEN, line, ppos,
+			    "%s breaks %s", mdoc_macronames[tok],
+			    mdoc_macronames[n->tok]);
+			/* FALLTHROUGH */
 		case (REWIND_MORE):
 			n = n->parent;
 			continue;
 		case (REWIND_LATER):
-			return(make_pending(n, tok, m, line, ppos));
+			if (make_pending(n, tok, m, line, ppos) ||
+			    MDOC_BLOCK != t)
+				return(1);
+			/* FALLTHROUGH */
 		case (REWIND_ERROR):
-			/* XXX Make this non-fatal. */
-			mdoc_vmsg(m, MANDOCERR_SCOPEFATAL, line, ppos,
-			    "%s cannot break %s", mdoc_macronames[tok],
-			    mdoc_macronames[n->tok]);
-			return 0;
+			mdoc_pmsg(m, line, ppos, MANDOCERR_NOSCOPE);
+			return(1);
 		}
 		break;
 	}
@@ -671,8 +673,7 @@ blk_exp_close(MACRO_PROT_ARGS)
 			 * postpone closing out the current block
 			 * until the rew_sub() closing out the sub-block.
 			 */
-			if ( ! make_pending(later, tok, m, line, ppos))
-				return(0);
+			make_pending(later, tok, m, line, ppos);
 
 			/*
 			 * Mark the place where the formatting - but not
@@ -1274,8 +1275,7 @@ blk_part_imp(MACRO_PROT_ARGS)
 		if (MDOC_BLOCK == n->type &&
 		    MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
 		    ! (MDOC_VALID & n->flags)) {
-			if ( ! make_pending(n, tok, m, line, ppos))
-				return(0);
+			make_pending(n, tok, m, line, ppos);
 			if ( ! mdoc_endbody_alloc(m, line, ppos,
 			    tok, body, ENDBODY_NOSPACE))
 				return(0);
Index: mdoc.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mdoc.c,v
retrieving revision 1.167
retrieving revision 1.168
diff -Lmdoc.c -Lmdoc.c -u -p -r1.167 -r1.168
--- mdoc.c
+++ mdoc.c
@@ -766,9 +766,7 @@ mdoc_pmacro(struct mdoc *m, int ln, char
 
 	tok = (j > 1 || j < 4) ? mdoc_hash_find(mac) : MDOC_MAX;
 	if (MDOC_MAX == tok) {
-		mdoc_vmsg(m, MANDOCERR_MACRO, ln, sv, 
-		    "unknown macro: %s%s", 
-		    buf, strlen(buf) > 3 ? "..." : "");
+		mdoc_vmsg(m, MANDOCERR_MACRO, ln, sv, "%s", buf + sv - 1);
 		return(1);
 	}
 
Index: mandoc.h
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mandoc.h,v
retrieving revision 1.29
retrieving revision 1.30
diff -Lmandoc.h -Lmandoc.h -u -p -r1.29 -r1.30
--- mandoc.h
+++ mandoc.h
@@ -89,6 +89,7 @@ enum	mandocerr {
 	MANDOCERR_LINESCOPE, /* line scope broken */
 	MANDOCERR_ARGCOUNT, /* argument count wrong */
 	MANDOCERR_NOSCOPE, /* no such block is open */
+	MANDOCERR_SCOPEBROKEN, /* missing end of block */
 	MANDOCERR_SCOPEREP, /* scope already open */
 	MANDOCERR_SCOPEEXIT, /* scope open on exit */
 	MANDOCERR_UNAME, /* uname(3) system call failed */
Index: main.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/main.c,v
retrieving revision 1.118
retrieving revision 1.119
diff -Lmain.c -Lmain.c -u -p -r1.118 -r1.119
--- main.c
+++ main.c
@@ -187,6 +187,7 @@ static	const char * const	mandocerrs[MAN
 	"unsupported display type",
 	"blocks badly nested",
 	"no such block is open",
+	"missing end of block",
 	"line scope broken, syntax violated",
 	"argument count wrong, violates syntax",
 	"child violates parent syntax",
--
 To unsubscribe send an email to source+unsubscribe@mdocml.bsd.lv