--- /dev/null	Sat Jul 19 14:23:44 2014
+++ new/usr/src/cmd/mandoc/read.c	Sat Jul 19 14:23:44 2014
@@ -0,0 +1,846 @@
+/*	$Id: read.c,v 1.28 2012/02/16 20:51:31 joerg Exp $ */
+/*
+ * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_MMAP
+# include <sys/stat.h>
+# include <sys/mman.h>
+#endif
+
+#include <assert.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "mandoc.h"
+#include "libmandoc.h"
+#include "mdoc.h"
+#include "man.h"
+#include "main.h"
+
+#ifndef MAP_FILE
+#define	MAP_FILE	0
+#endif
+
+#define	REPARSE_LIMIT	1000
+
+struct	buf {
+	char	 	 *buf; /* binary input buffer */
+	size_t		  sz; /* size of binary buffer */
+};
+
+struct	mparse {
+	enum mandoclevel  file_status; /* status of current parse */
+	enum mandoclevel  wlevel; /* ignore messages below this */
+	int		  line; /* line number in the file */
+	enum mparset	  inttype; /* which parser to use */
+	struct man	 *pman; /* persistent man parser */
+	struct mdoc	 *pmdoc; /* persistent mdoc parser */
+	struct man	 *man; /* man parser */
+	struct mdoc	 *mdoc; /* mdoc parser */
+	struct roff	 *roff; /* roff parser (!NULL) */
+	int		  reparse_count; /* finite interp. stack */
+	mandocmsg	  mmsg; /* warning/error message handler */
+	void		 *arg; /* argument to mmsg */
+	const char	 *file; 
+	struct buf	 *secondary;
+};
+
+static	void	  resize_buf(struct buf *, size_t);
+static	void	  mparse_buf_r(struct mparse *, struct buf, int);
+static	void	  mparse_readfd_r(struct mparse *, int, const char *, int);
+static	void	  pset(const char *, int, struct mparse *);
+static	int	  read_whole_file(const char *, int, struct buf *, int *);
+static	void	  mparse_end(struct mparse *);
+
+static	const enum mandocerr	mandoclimits[MANDOCLEVEL_MAX] = {
+	MANDOCERR_OK,
+	MANDOCERR_WARNING,
+	MANDOCERR_WARNING,
+	MANDOCERR_ERROR,
+	MANDOCERR_FATAL,
+	MANDOCERR_MAX,
+	MANDOCERR_MAX
+};
+
+static	const char * const	mandocerrs[MANDOCERR_MAX] = {
+	"ok",
+
+	"generic warning",
+
+	/* related to the prologue */
+	"no title in document",
+	"document title should be all caps",
+	"unknown manual section",
+	"date missing, using today's date",
+	"cannot parse date, using it verbatim",
+	"prologue macros out of order",
+	"duplicate prologue macro",
+	"macro not allowed in prologue",
+	"macro not allowed in body",
+
+	/* related to document structure */
+	".so is fragile, better use ln(1)",
+	"NAME section must come first",
+	"bad NAME section contents",
+	"manual name not yet set",
+	"sections out of conventional order",
+	"duplicate section name",
+	"section not in conventional manual section",
+
+	/* related to macros and nesting */
+	"skipping obsolete macro",
+	"skipping paragraph macro",
+	"skipping no-space macro",
+	"blocks badly nested",
+	"child violates parent syntax",
+	"nested displays are not portable",
+	"already in literal mode",
+	"line scope broken",
+
+	/* related to missing macro arguments */
+	"skipping empty macro",
+	"argument count wrong",
+	"missing display type",
+	"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",
+	"duplicate argument",
+	"duplicate display type",
+	"duplicate list type",
+	"unknown AT&T UNIX version",
+	"bad Boolean value",
+	"unknown font",
+	"unknown standard specifier",
+	"bad width argument",
+
+	/* related to plain text */
+	"blank line in non-literal context",
+	"tab in non-literal context",
+	"end of line whitespace",
+	"bad comment style",
+	"bad escape sequence",
+	"unterminated quoted string",
+
+	/* related to equations */
+	"unexpected literal in equation",
+	
+	"generic error",
+
+	/* related to equations */
+	"unexpected equation scope closure",
+	"equation scope open on exit",
+	"overlapping equation scopes",
+	"unexpected end of equation",
+	"equation syntax error",
+
+	/* related to tables */
+	"bad table syntax",
+	"bad table option",
+	"bad table layout",
+	"no table layout cells specified",
+	"no table data cells specified",
+	"ignore data in cell",
+	"data block still open",
+	"ignoring extra data cells",
+
+	"input stack limit exceeded, infinite loop?",
+	"skipping bad character",
+	"escaped character not allowed in a name",
+	"skipping text before the first section header",
+	"skipping unknown macro",
+	"NOT IMPLEMENTED, please use groff: skipping request",
+	"argument count wrong",
+	"skipping end of block that is not open",
+	"missing end of block",
+	"scope open on exit",
+	"uname(3) system call failed",
+	"macro requires line argument(s)",
+	"macro requires body argument(s)",
+	"macro requires argument(s)",
+	"missing list type",
+	"line argument(s) will be lost",
+	"body argument(s) will be lost",
+
+	"generic fatal error",
+
+	"not a manual",
+	"column syntax is inconsistent",
+	"NOT IMPLEMENTED: .Bd -file",
+	"argument count wrong, violates syntax",
+	"child violates parent syntax",
+	"argument count wrong, violates syntax",
+	"NOT IMPLEMENTED: .so with absolute path or \"..\"",
+	"no document body",
+	"no document prologue",
+	"static buffer exhausted",
+};
+
+static	const char * const	mandoclevels[MANDOCLEVEL_MAX] = {
+	"SUCCESS",
+	"RESERVED",
+	"WARNING",
+	"ERROR",
+	"FATAL",
+	"BADARG",
+	"SYSERR"
+};
+
+static void
+resize_buf(struct buf *buf, size_t initial)
+{
+
+	buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
+	buf->buf = mandoc_realloc(buf->buf, buf->sz);
+}
+
+static void
+pset(const char *buf, int pos, struct mparse *curp)
+{
+	int		 i;
+
+	/*
+	 * Try to intuit which kind of manual parser should be used.  If
+	 * passed in by command-line (-man, -mdoc), then use that
+	 * explicitly.  If passed as -mandoc, then try to guess from the
+	 * line: either skip dot-lines, use -mdoc when finding `.Dt', or
+	 * default to -man, which is more lenient.
+	 *
+	 * Separate out pmdoc/pman from mdoc/man: the first persists
+	 * through all parsers, while the latter is used per-parse.
+	 */
+
+	if ('.' == buf[0] || '\'' == buf[0]) {
+		for (i = 1; buf[i]; i++)
+			if (' ' != buf[i] && '\t' != buf[i])
+				break;
+		if ('\0' == buf[i])
+			return;
+	}
+
+	switch (curp->inttype) {
+	case (MPARSE_MDOC):
+		if (NULL == curp->pmdoc) 
+			curp->pmdoc = mdoc_alloc(curp->roff, curp);
+		assert(curp->pmdoc);
+		curp->mdoc = curp->pmdoc;
+		return;
+	case (MPARSE_MAN):
+		if (NULL == curp->pman) 
+			curp->pman = man_alloc(curp->roff, curp);
+		assert(curp->pman);
+		curp->man = curp->pman;
+		return;
+	default:
+		break;
+	}
+
+	if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3))  {
+		if (NULL == curp->pmdoc) 
+			curp->pmdoc = mdoc_alloc(curp->roff, curp);
+		assert(curp->pmdoc);
+		curp->mdoc = curp->pmdoc;
+		return;
+	} 
+
+	if (NULL == curp->pman) 
+		curp->pman = man_alloc(curp->roff, curp);
+	assert(curp->pman);
+	curp->man = curp->pman;
+}
+
+/*
+ * Main parse routine for an opened file.  This is called for each
+ * opened file and simply loops around the full input file, possibly
+ * nesting (i.e., with `so').
+ */
+static void
+mparse_buf_r(struct mparse *curp, struct buf blk, int start)
+{
+	const struct tbl_span	*span;
+	struct buf	 ln;
+	enum rofferr	 rr;
+	int		 i, of, rc;
+	int		 pos; /* byte number in the ln buffer */
+	int		 lnn; /* line number in the real file */
+	unsigned char	 c;
+
+	memset(&ln, 0, sizeof(struct buf));
+
+	lnn = curp->line; 
+	pos = 0; 
+
+	for (i = 0; i < (int)blk.sz; ) {
+		if (0 == pos && '\0' == blk.buf[i])
+			break;
+
+		if (start) {
+			curp->line = lnn;
+			curp->reparse_count = 0;
+		}
+
+		while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
+
+			/*
+			 * When finding an unescaped newline character,
+			 * leave the character loop to process the line.
+			 * Skip a preceding carriage return, if any.
+			 */
+
+			if ('\r' == blk.buf[i] && i + 1 < (int)blk.sz &&
+			    '\n' == blk.buf[i + 1])
+				++i;
+			if ('\n' == blk.buf[i]) {
+				++i;
+				++lnn;
+				break;
+			}
+
+			/* 
+			 * Warn about bogus characters.  If you're using
+			 * non-ASCII encoding, you're screwing your
+			 * readers.  Since I'd rather this not happen,
+			 * I'll be helpful and replace these characters
+			 * with "?", so we don't display gibberish.
+			 * Note to manual writers: use special characters.
+			 */
+
+			c = (unsigned char) blk.buf[i];
+
+			if ( ! (isascii(c) && 
+					(isgraph(c) || isblank(c)))) {
+				mandoc_msg(MANDOCERR_BADCHAR, curp,
+						curp->line, pos, NULL);
+				i++;
+				if (pos >= (int)ln.sz)
+					resize_buf(&ln, 256);
+				ln.buf[pos++] = '?';
+				continue;
+			}
+
+			/* Trailing backslash = a plain char. */
+
+			if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
+				if (pos >= (int)ln.sz)
+					resize_buf(&ln, 256);
+				ln.buf[pos++] = blk.buf[i++];
+				continue;
+			}
+
+			/*
+			 * Found escape and at least one other character.
+			 * When it's a newline character, skip it.
+			 * When there is a carriage return in between,
+			 * skip that one as well.
+			 */
+
+			if ('\r' == blk.buf[i + 1] && i + 2 < (int)blk.sz &&
+			    '\n' == blk.buf[i + 2])
+				++i;
+			if ('\n' == blk.buf[i + 1]) {
+				i += 2;
+				++lnn;
+				continue;
+			}
+
+			if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
+				i += 2;
+				/* Comment, skip to end of line */
+				for (; i < (int)blk.sz; ++i) {
+					if ('\n' == blk.buf[i]) {
+						++i;
+						++lnn;
+						break;
+					}
+				}
+
+				/* Backout trailing whitespaces */
+				for (; pos > 0; --pos) {
+					if (ln.buf[pos - 1] != ' ')
+						break;
+					if (pos > 2 && ln.buf[pos - 2] == '\\')
+						break;
+				}
+				break;
+			}
+
+			/* Some other escape sequence, copy & cont. */
+
+			if (pos + 1 >= (int)ln.sz)
+				resize_buf(&ln, 256);
+
+			ln.buf[pos++] = blk.buf[i++];
+			ln.buf[pos++] = blk.buf[i++];
+		}
+
+ 		if (pos >= (int)ln.sz)
+			resize_buf(&ln, 256);
+
+		ln.buf[pos] = '\0';
+
+		/*
+		 * A significant amount of complexity is contained by
+		 * the roff preprocessor.  It's line-oriented but can be
+		 * expressed on one line, so we need at times to
+		 * readjust our starting point and re-run it.  The roff
+		 * preprocessor can also readjust the buffers with new
+		 * data, so we pass them in wholesale.
+		 */
+
+		of = 0;
+
+		/*
+		 * Maintain a lookaside buffer of all parsed lines.  We
+		 * only do this if mparse_keep() has been invoked (the
+		 * buffer may be accessed with mparse_getkeep()).
+		 */
+
+		if (curp->secondary) {
+			curp->secondary->buf = 
+				mandoc_realloc
+				(curp->secondary->buf, 
+				 curp->secondary->sz + pos + 2);
+			memcpy(curp->secondary->buf + 
+					curp->secondary->sz, 
+					ln.buf, pos);
+			curp->secondary->sz += pos;
+			curp->secondary->buf
+				[curp->secondary->sz] = '\n';
+			curp->secondary->sz++;
+			curp->secondary->buf
+				[curp->secondary->sz] = '\0';
+		}
+rerun:
+		rr = roff_parseln
+			(curp->roff, curp->line, 
+			 &ln.buf, &ln.sz, of, &of);
+
+		switch (rr) {
+		case (ROFF_REPARSE):
+			if (REPARSE_LIMIT >= ++curp->reparse_count)
+				mparse_buf_r(curp, ln, 0);
+			else
+				mandoc_msg(MANDOCERR_ROFFLOOP, curp,
+					curp->line, pos, NULL);
+			pos = 0;
+			continue;
+		case (ROFF_APPEND):
+			pos = (int)strlen(ln.buf);
+			continue;
+		case (ROFF_RERUN):
+			goto rerun;
+		case (ROFF_IGN):
+			pos = 0;
+			continue;
+		case (ROFF_ERR):
+			assert(MANDOCLEVEL_FATAL <= curp->file_status);
+			break;
+		case (ROFF_SO):
+			/*
+			 * We remove `so' clauses from our lookaside
+			 * buffer because we're going to descend into
+			 * the file recursively.
+			 */
+			if (curp->secondary) 
+				curp->secondary->sz -= pos + 1;
+			mparse_readfd_r(curp, -1, ln.buf + of, 1);
+			if (MANDOCLEVEL_FATAL <= curp->file_status)
+				break;
+			pos = 0;
+			continue;
+		default:
+			break;
+		}
+
+		/*
+		 * If we encounter errors in the recursive parse, make
+		 * sure we don't continue parsing.
+		 */
+
+		if (MANDOCLEVEL_FATAL <= curp->file_status)
+			break;
+
+		/*
+		 * If input parsers have not been allocated, do so now.
+		 * We keep these instanced between parsers, but set them
+		 * locally per parse routine since we can use different
+		 * parsers with each one.
+		 */
+
+		if ( ! (curp->man || curp->mdoc))
+			pset(ln.buf + of, pos - of, curp);
+
+		/* 
+		 * Lastly, push down into the parsers themselves.  One
+		 * of these will have already been set in the pset()
+		 * routine.
+		 * If libroff returns ROFF_TBL, then add it to the
+		 * currently open parse.  Since we only get here if
+		 * there does exist data (see tbl_data.c), we're
+		 * guaranteed that something's been allocated.
+		 * Do the same for ROFF_EQN.
+		 */
+
+		rc = -1;
+
+		if (ROFF_TBL == rr)
+			while (NULL != (span = roff_span(curp->roff))) {
+				rc = curp->man ?
+					man_addspan(curp->man, span) :
+					mdoc_addspan(curp->mdoc, span);
+				if (0 == rc)
+					break;
+			}
+		else if (ROFF_EQN == rr)
+			rc = curp->mdoc ? 
+				mdoc_addeqn(curp->mdoc, 
+					roff_eqn(curp->roff)) :
+				man_addeqn(curp->man,
+					roff_eqn(curp->roff));
+		else if (curp->man || curp->mdoc)
+			rc = curp->man ?
+				man_parseln(curp->man, 
+					curp->line, ln.buf, of) :
+				mdoc_parseln(curp->mdoc, 
+					curp->line, ln.buf, of);
+
+		if (0 == rc) {
+			assert(MANDOCLEVEL_FATAL <= curp->file_status);
+			break;
+		}
+
+		/* Temporary buffers typically are not full. */
+
+		if (0 == start && '\0' == blk.buf[i])
+			break;
+
+		/* Start the next input line. */
+
+		pos = 0;
+	}
+
+	free(ln.buf);
+}
+
+static int
+read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
+{
+	size_t		 off;
+	ssize_t		 ssz;
+
+#ifdef	HAVE_MMAP
+	struct stat	 st;
+	if (-1 == fstat(fd, &st)) {
+		perror(file);
+		return(0);
+	}
+
+	/*
+	 * If we're a regular file, try just reading in the whole entry
+	 * via mmap().  This is faster than reading it into blocks, and
+	 * since each file is only a few bytes to begin with, I'm not
+	 * concerned that this is going to tank any machines.
+	 */
+
+	if (S_ISREG(st.st_mode)) {
+		if (st.st_size >= (1U << 31)) {
+			fprintf(stderr, "%s: input too large\n", file);
+			return(0);
+		}
+		*with_mmap = 1;
+		fb->sz = (size_t)st.st_size;
+		fb->buf = mmap(NULL, fb->sz, PROT_READ, 
+				MAP_FILE|MAP_SHARED, fd, 0);
+		if (fb->buf != MAP_FAILED)
+			return(1);
+	}
+#endif
+
+	/*
+	 * If this isn't a regular file (like, say, stdin), then we must
+	 * go the old way and just read things in bit by bit.
+	 */
+
+	*with_mmap = 0;
+	off = 0;
+	fb->sz = 0;
+	fb->buf = NULL;
+	for (;;) {
+		if (off == fb->sz) {
+			if (fb->sz == (1U << 31)) {
+				fprintf(stderr, "%s: input too large\n", file);
+				break;
+			}
+			resize_buf(fb, 65536);
+		}
+		ssz = read(fd, fb->buf + (int)off, fb->sz - off);
+		if (ssz == 0) {
+			fb->sz = off;
+			return(1);
+		}
+		if (ssz == -1) {
+			perror(file);
+			break;
+		}
+		off += (size_t)ssz;
+	}
+
+	free(fb->buf);
+	fb->buf = NULL;
+	return(0);
+}
+
+static void
+mparse_end(struct mparse *curp)
+{
+
+	if (MANDOCLEVEL_FATAL <= curp->file_status)
+		return;
+
+	if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {
+		assert(MANDOCLEVEL_FATAL <= curp->file_status);
+		return;
+	}
+
+	if (curp->man && ! man_endparse(curp->man)) {
+		assert(MANDOCLEVEL_FATAL <= curp->file_status);
+		return;
+	}
+
+	if ( ! (curp->man || curp->mdoc)) {
+		mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL);
+		curp->file_status = MANDOCLEVEL_FATAL;
+		return;
+	}
+
+	roff_endparse(curp->roff);
+}
+
+static void
+mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file,
+		int re)
+{
+	const char	*svfile;
+
+	/* Line number is per-file. */
+	svfile = curp->file;
+	curp->file = file;
+	curp->line = 1;
+
+	mparse_buf_r(curp, blk, 1);
+
+	if (0 == re && MANDOCLEVEL_FATAL > curp->file_status)
+		mparse_end(curp);
+
+	curp->file = svfile;
+}
+
+enum mandoclevel
+mparse_readmem(struct mparse *curp, const void *buf, size_t len,
+		const char *file)
+{
+	struct buf blk;
+
+	blk.buf = UNCONST(buf);
+	blk.sz = len;
+
+	mparse_parse_buffer(curp, blk, file, 0);
+	return(curp->file_status);
+}
+
+static void
+mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
+{
+	struct buf	 blk;
+	int		 with_mmap;
+
+	if (-1 == fd)
+		if (-1 == (fd = open(file, O_RDONLY, 0))) {
+			perror(file);
+			curp->file_status = MANDOCLEVEL_SYSERR;
+			return;
+		}
+	/*
+	 * Run for each opened file; may be called more than once for
+	 * each full parse sequence if the opened file is nested (i.e.,
+	 * from `so').  Simply sucks in the whole file and moves into
+	 * the parse phase for the file.
+	 */
+
+	if ( ! read_whole_file(file, fd, &blk, &with_mmap)) {
+		curp->file_status = MANDOCLEVEL_SYSERR;
+		return;
+	}
+
+	mparse_parse_buffer(curp, blk, file, re);
+
+#ifdef	HAVE_MMAP
+	if (with_mmap)
+		munmap(blk.buf, blk.sz);
+	else
+#endif
+		free(blk.buf);
+
+	if (STDIN_FILENO != fd && -1 == close(fd))
+		perror(file);
+}
+
+enum mandoclevel
+mparse_readfd(struct mparse *curp, int fd, const char *file)
+{
+
+	mparse_readfd_r(curp, fd, file, 0);
+	return(curp->file_status);
+}
+
+struct mparse *
+mparse_alloc(enum mparset inttype, enum mandoclevel wlevel, mandocmsg mmsg, void *arg)
+{
+	struct mparse	*curp;
+
+	assert(wlevel <= MANDOCLEVEL_FATAL);
+
+	curp = mandoc_calloc(1, sizeof(struct mparse));
+
+	curp->wlevel = wlevel;
+	curp->mmsg = mmsg;
+	curp->arg = arg;
+	curp->inttype = inttype;
+
+	curp->roff = roff_alloc(curp);
+	return(curp);
+}
+
+void
+mparse_reset(struct mparse *curp)
+{
+
+	roff_reset(curp->roff);
+
+	if (curp->mdoc)
+		mdoc_reset(curp->mdoc);
+	if (curp->man)
+		man_reset(curp->man);
+	if (curp->secondary)
+		curp->secondary->sz = 0;
+
+	curp->file_status = MANDOCLEVEL_OK;
+	curp->mdoc = NULL;
+	curp->man = NULL;
+}
+
+void
+mparse_free(struct mparse *curp)
+{
+
+	if (curp->pmdoc)
+		mdoc_free(curp->pmdoc);
+	if (curp->pman)
+		man_free(curp->pman);
+	if (curp->roff)
+		roff_free(curp->roff);
+	if (curp->secondary)
+		free(curp->secondary->buf);
+
+	free(curp->secondary);
+	free(curp);
+}
+
+void
+mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man)
+{
+
+	if (mdoc)
+		*mdoc = curp->mdoc;
+	if (man)
+		*man = curp->man;
+}
+
+void
+mandoc_vmsg(enum mandocerr t, struct mparse *m,
+		int ln, int pos, const char *fmt, ...)
+{
+	char		 buf[256];
+	va_list		 ap;
+
+	va_start(ap, fmt);
+	vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
+	va_end(ap);
+
+	mandoc_msg(t, m, ln, pos, buf);
+}
+
+void
+mandoc_msg(enum mandocerr er, struct mparse *m, 
+		int ln, int col, const char *msg)
+{
+	enum mandoclevel level;
+
+	level = MANDOCLEVEL_FATAL;
+	while (er < mandoclimits[level])
+		level--;
+
+	if (level < m->wlevel)
+		return;
+
+	if (m->mmsg)
+		(*m->mmsg)(er, level, m->file, ln, col, msg);
+
+	if (m->file_status < level)
+		m->file_status = level;
+}
+
+const char *
+mparse_strerror(enum mandocerr er)
+{
+
+	return(mandocerrs[er]);
+}
+
+const char *
+mparse_strlevel(enum mandoclevel lvl)
+{
+	return(mandoclevels[lvl]);
+}
+
+void
+mparse_keep(struct mparse *p)
+{
+
+	assert(NULL == p->secondary);
+	p->secondary = mandoc_calloc(1, sizeof(struct buf));
+}
+
+const char *
+mparse_getkeep(const struct mparse *p)
+{
+
+	assert(p->secondary);
+	return(p->secondary->sz ? p->secondary->buf : NULL);
+}
