===================================================================
RCS file: /cvs/mandoc/mandocdb.c,v
retrieving revision 1.169
retrieving revision 1.176
diff -u -p -r1.169 -r1.176
--- mandoc/mandocdb.c	2014/11/19 20:40:51	1.169
+++ mandoc/mandocdb.c	2014/12/05 14:26:40	1.176
@@ -1,4 +1,4 @@
-/*	$Id: mandocdb.c,v 1.169 2014/11/19 20:40:51 schwarze Exp $ */
+/*	$Id: mandocdb.c,v 1.176 2014/12/05 14:26:40 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -84,10 +84,9 @@ enum	op {
 };
 
 struct	str {
-	char		*rendered; /* key in UTF-8 or ASCII form */
 	const struct mpage *mpage; /* if set, the owning parse */
 	uint64_t	 mask; /* bitmask in sequence */
-	char		 key[]; /* may contain escape sequences */
+	char		 key[]; /* rendered text */
 };
 
 struct	inodev {
@@ -104,6 +103,7 @@ struct	mpage {
 	char		*desc;    /* description from file content */
 	struct mlink	*mlinks;  /* singly linked list */
 	int		 form;    /* format from file content */
+	int		 name_head_done;
 };
 
 struct	mlink {
@@ -124,11 +124,13 @@ enum	stmt {
 	STMT_INSERT_PAGE,	/* insert mpage */
 	STMT_INSERT_LINK,	/* insert mlink */
 	STMT_INSERT_NAME,	/* insert name */
+	STMT_SELECT_NAME,	/* retrieve existing name flags */
 	STMT_INSERT_KEY,	/* insert parsed key */
 	STMT__MAX
 };
 
-typedef	int (*mdoc_fp)(struct mpage *, const struct mdoc_node *);
+typedef	int (*mdoc_fp)(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
 
 struct	mdoc_handler {
 	mdoc_fp		 fp; /* optional handler */
@@ -136,7 +138,7 @@ struct	mdoc_handler {
 };
 
 static	void	 dbclose(int);
-static	void	 dbadd(struct mpage *, struct mchars *);
+static	void	 dbadd(struct mpage *);
 static	void	 dbadd_mlink(const struct mlink *mlink);
 static	void	 dbadd_mlink_name(const struct mlink *mlink);
 static	int	 dbopen(int);
@@ -150,25 +152,36 @@ static	void	 mlink_check(struct mpage *, struct mlink 
 static	void	 mlink_free(struct mlink *);
 static	void	 mlinks_undupe(struct mpage *);
 static	void	 mpages_free(void);
-static	void	 mpages_merge(struct mchars *, struct mparse *);
+static	void	 mpages_merge(struct mparse *);
 static	void	 names_check(void);
 static	void	 parse_cat(struct mpage *, int);
-static	void	 parse_man(struct mpage *, const struct man_node *);
-static	void	 parse_mdoc(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_body(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_head(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_Fd(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_Fn(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_Nd(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_Nm(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_Sh(struct mpage *, const struct mdoc_node *);
-static	int	 parse_mdoc_Xr(struct mpage *, const struct mdoc_node *);
+static	void	 parse_man(struct mpage *, const struct man_meta *,
+			const struct man_node *);
+static	void	 parse_mdoc(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_body(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_head(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_Fd(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_Fn(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_Fo(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_Nd(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_Nm(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_Sh(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
+static	int	 parse_mdoc_Xr(struct mpage *, const struct mdoc_meta *,
+			const struct mdoc_node *);
 static	void	 putkey(const struct mpage *, char *, uint64_t);
-static	void	 putkeys(const struct mpage *,
-			const char *, size_t, uint64_t);
+static	void	 putkeys(const struct mpage *, char *, size_t, uint64_t);
 static	void	 putmdockey(const struct mpage *,
 			const struct mdoc_node *, uint64_t);
-static	void	 render_key(struct mchars *, struct str *);
+static	int	 render_string(char **, size_t *);
 static	void	 say(const char *, const char *, ...);
 static	int	 set_basedir(const char *, int);
 static	int	 treescan(void);
@@ -185,6 +198,7 @@ static	int		 write_utf8; /* write UTF-8 output; else A
 static	int		 exitcode; /* to be returned by main */
 static	enum op		 op; /* operational mode */
 static	char		 basedir[PATH_MAX]; /* current base directory */
+static	struct mchars	*mchars; /* table of named characters */
 static	struct ohash	 mpages; /* table of distinct manual pages */
 static	struct ohash	 mlinks; /* table of directory entries */
 static	struct ohash	 names; /* table of all names */
@@ -290,7 +304,7 @@ static	const struct mdoc_handler mdocs[MDOC_MAX] = {
 	{ NULL, 0 },  /* Ux */
 	{ NULL, 0 },  /* Xc */
 	{ NULL, 0 },  /* Xo */
-	{ parse_mdoc_head, 0 },  /* Fo */
+	{ parse_mdoc_Fo, 0 },  /* Fo */
 	{ NULL, 0 },  /* Fc */
 	{ NULL, 0 },  /* Oo */
 	{ NULL, 0 },  /* Oc */
@@ -326,7 +340,6 @@ main(int argc, char *argv[])
 	int		  ch, i;
 	size_t		  j, sz;
 	const char	 *path_arg;
-	struct mchars	 *mc;
 	struct manpaths	  dirs;
 	struct mparse	 *mp;
 	struct ohash_info mpages_info, mlinks_info;
@@ -426,9 +439,9 @@ main(int argc, char *argv[])
 	}
 
 	exitcode = (int)MANDOCLEVEL_OK;
-	mc = mchars_alloc();
+	mchars = mchars_alloc();
 	mp = mparse_alloc(mparse_options, MANDOCLEVEL_FATAL, NULL,
-	    mc, NULL);
+	    mchars, NULL);
 	ohash_init(&mpages, 6, &mpages_info);
 	ohash_init(&mlinks, 6, &mlinks_info);
 
@@ -464,7 +477,7 @@ main(int argc, char *argv[])
 				goto out;
 		}
 		if (OP_DELETE != op)
-			mpages_merge(mc, mp);
+			mpages_merge(mp);
 		dbclose(OP_DEFAULT == op ? 0 : 1);
 	} else {
 		/*
@@ -511,7 +524,7 @@ main(int argc, char *argv[])
 			if (0 == dbopen(0))
 				continue;
 
-			mpages_merge(mc, mp);
+			mpages_merge(mp);
 			if (warnings && !nodb &&
 			    ! (MPARSE_QUICK & mparse_options))
 				names_check();
@@ -527,7 +540,7 @@ main(int argc, char *argv[])
 out:
 	manpath_free(&dirs);
 	mparse_free(mp);
-	mchars_free(mc);
+	mchars_free(mchars);
 	mpages_free();
 	ohash_delete(&mpages);
 	ohash_delete(&mlinks);
@@ -1074,7 +1087,7 @@ mlink_check(struct mpage *mpage, struct mlink *mlink)
  * and filename to determine whether the file is parsable or not.
  */
 static void
-mpages_merge(struct mchars *mc, struct mparse *mp)
+mpages_merge(struct mparse *mp)
 {
 	char			 any[] = "any";
 	struct ohash_info	 str_info;
@@ -1084,7 +1097,6 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 	struct man		*man;
 	char			*sodest;
 	char			*cp;
-	pid_t			 child_pid;
 	int			 fd;
 	unsigned int		 pslot;
 	enum mandoclevel	 lvl;
@@ -1094,13 +1106,13 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 	str_info.free = hash_free;
 	str_info.key_offset = offsetof(struct str, key);
 
-	if (0 == nodb)
+	if ( ! nodb)
 		SQL_EXEC("BEGIN TRANSACTION");
 
 	mpage = ohash_first(&mpages, &pslot);
-	while (NULL != mpage) {
+	while (mpage != NULL) {
 		mlinks_undupe(mpage);
-		if (NULL == mpage->mlinks) {
+		if (mpage->mlinks == NULL) {
 			mpage = ohash_next(&mpages, &pslot);
 			continue;
 		}
@@ -1112,9 +1124,8 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 		mdoc = NULL;
 		man = NULL;
 		sodest = NULL;
-		child_pid = 0;
 
-		mparse_open(mp, &fd, mpage->mlinks->file, &child_pid);
+		mparse_open(mp, &fd, mpage->mlinks->file);
 		if (fd == -1) {
 			say(mpage->mlinks->file, "&open");
 			goto nextpage;
@@ -1125,17 +1136,23 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 		 * source code, unless it is already known to be
 		 * formatted.  Fall back to formatted mode.
 		 */
-		if (FORM_CAT != mpage->mlinks->dform ||
-		    FORM_CAT != mpage->mlinks->fform) {
+		if (mpage->mlinks->dform != FORM_CAT ||
+		    mpage->mlinks->fform != FORM_CAT) {
 			lvl = mparse_readfd(mp, fd, mpage->mlinks->file);
 			if (lvl < MANDOCLEVEL_FATAL)
 				mparse_result(mp, &mdoc, &man, &sodest);
 		}
 
-		if (NULL != sodest) {
+		if (sodest != NULL) {
 			mlink_dest = ohash_find(&mlinks,
 			    ohash_qlookup(&mlinks, sodest));
-			if (NULL != mlink_dest) {
+			if (mlink_dest == NULL) {
+				mandoc_asprintf(&cp, "%s.gz", sodest);
+				mlink_dest = ohash_find(&mlinks,
+				    ohash_qlookup(&mlinks, cp));
+				free(cp);
+			}
+			if (mlink_dest != NULL) {
 
 				/* The .so target exists. */
 
@@ -1156,7 +1173,7 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 					if (mpage_dest->pageid)
 						dbadd_mlink_name(mlink);
 
-					if (NULL == mlink->next)
+					if (mlink->next == NULL)
 						break;
 					mlink = mlink->next;
 				}
@@ -1168,17 +1185,17 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 				mpage->mlinks = NULL;
 			}
 			goto nextpage;
-		} else if (NULL != mdoc) {
+		} else if (mdoc != NULL) {
 			mpage->form = FORM_SRC;
 			mpage->sec = mdoc_meta(mdoc)->msec;
 			mpage->sec = mandoc_strdup(
-			    NULL == mpage->sec ? "" : mpage->sec);
+			    mpage->sec == NULL ? "" : mpage->sec);
 			mpage->arch = mdoc_meta(mdoc)->arch;
 			mpage->arch = mandoc_strdup(
-			    NULL == mpage->arch ? "" : mpage->arch);
+			    mpage->arch == NULL ? "" : mpage->arch);
 			mpage->title =
 			    mandoc_strdup(mdoc_meta(mdoc)->title);
-		} else if (NULL != man) {
+		} else if (man != NULL) {
 			mpage->form = FORM_SRC;
 			mpage->sec =
 			    mandoc_strdup(man_meta(man)->msec);
@@ -1195,8 +1212,6 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 			mpage->title =
 			    mandoc_strdup(mpage->mlinks->name);
 		}
-		if (mpage->mlinks->gzip)
-			mpage->form |= FORM_GZ;
 		putkey(mpage, mpage->sec, TYPE_sec);
 		if (*mpage->arch != '\0')
 			putkey(mpage, mpage->arch, TYPE_arch);
@@ -1211,16 +1226,14 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 			putkey(mpage, mlink->name, NAME_FILE);
 		}
 
-		assert(NULL == mpage->desc);
-		if (NULL != mdoc) {
-			if (NULL != (cp = mdoc_meta(mdoc)->name))
-				putkey(mpage, cp, NAME_HEAD);
-			parse_mdoc(mpage, mdoc_node(mdoc));
-		} else if (NULL != man)
-			parse_man(mpage, man_node(man));
+		assert(mpage->desc == NULL);
+		if (mdoc != NULL)
+			parse_mdoc(mpage, mdoc_meta(mdoc), mdoc_node(mdoc));
+		else if (man != NULL)
+			parse_man(mpage, man_meta(man), man_node(man));
 		else
 			parse_cat(mpage, fd);
-		if (NULL == mpage->desc)
+		if (mpage->desc == NULL)
 			mpage->desc = mandoc_strdup(mpage->mlinks->name);
 
 		if (warnings && !use_all)
@@ -1228,11 +1241,10 @@ mpages_merge(struct mchars *mc, struct mparse *mp)
 			     mlink = mlink->next)
 				mlink_check(mpage, mlink);
 
-		dbadd(mpage, mc);
+		dbadd(mpage);
 
 nextpage:
-		if (child_pid &&
-		    mparse_wait(mp, child_pid) != MANDOCLEVEL_OK) {
+		if (mparse_wait(mp) != MANDOCLEVEL_OK) {
 			exitcode = (int)MANDOCLEVEL_SYSERR;
 			say(mpage->mlinks->file, "&wait gunzip");
 		}
@@ -1426,7 +1438,8 @@ putmdockey(const struct mpage *mpage,
 }
 
 static void
-parse_man(struct mpage *mpage, const struct man_node *n)
+parse_man(struct mpage *mpage, const struct man_meta *meta,
+	const struct man_node *n)
 {
 	const struct man_node *head, *body;
 	char		*start, *title;
@@ -1492,6 +1505,11 @@ parse_man(struct mpage *mpage, const struct man_node *
 					break;
 
 				putkey(mpage, start, NAME_TITLE);
+				if ( ! (mpage->name_head_done ||
+				    strcasecmp(start, meta->title))) {
+					putkey(mpage, start, NAME_HEAD);
+					mpage->name_head_done = 1;
+				}
 
 				if (' ' == byte) {
 					start += sz + 1;
@@ -1506,6 +1524,11 @@ parse_man(struct mpage *mpage, const struct man_node *
 
 			if (start == title) {
 				putkey(mpage, start, NAME_TITLE);
+				if ( ! (mpage->name_head_done ||
+				    strcasecmp(start, meta->title))) {
+					putkey(mpage, start, NAME_HEAD);
+					mpage->name_head_done = 1;
+				}
 				free(title);
 				return;
 			}
@@ -1536,12 +1559,13 @@ parse_man(struct mpage *mpage, const struct man_node *
 	for (n = n->child; n; n = n->next) {
 		if (NULL != mpage->desc)
 			break;
-		parse_man(mpage, n);
+		parse_man(mpage, meta, n);
 	}
 }
 
 static void
-parse_mdoc(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
 
 	assert(NULL != n);
@@ -1557,7 +1581,7 @@ parse_mdoc(struct mpage *mpage, const struct mdoc_node
 			/* FALLTHROUGH */
 		case MDOC_TAIL:
 			if (NULL != mdocs[n->tok].fp)
-			       if (0 == (*mdocs[n->tok].fp)(mpage, n))
+			       if (0 == (*mdocs[n->tok].fp)(mpage, meta, n))
 				       break;
 			if (mdocs[n->tok].mask)
 				putmdockey(mpage, n->child,
@@ -1568,14 +1592,15 @@ parse_mdoc(struct mpage *mpage, const struct mdoc_node
 			continue;
 		}
 		if (NULL != n->child)
-			parse_mdoc(mpage, n);
+			parse_mdoc(mpage, meta, n);
 	}
 }
 
 static int
-parse_mdoc_Fd(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_Fd(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
-	const char	*start, *end;
+	char		*start, *end;
 	size_t		 sz;
 
 	if (SEC_SYNOPSIS != n->sec ||
@@ -1616,7 +1641,8 @@ parse_mdoc_Fd(struct mpage *mpage, const struct mdoc_n
 }
 
 static int
-parse_mdoc_Fn(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_Fn(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
 	char	*cp;
 
@@ -1637,6 +1663,8 @@ parse_mdoc_Fn(struct mpage *mpage, const struct mdoc_n
 		cp++;
 
 	putkey(mpage, cp, TYPE_Fn);
+	if (n->sec == SEC_SYNOPSIS)
+		putkey(mpage, cp, NAME_SYN);
 
 	if (n->string < cp)
 		putkeys(mpage, n->string, cp - n->string, TYPE_Ft);
@@ -1649,8 +1677,20 @@ parse_mdoc_Fn(struct mpage *mpage, const struct mdoc_n
 }
 
 static int
-parse_mdoc_Xr(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_Fo(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
+
+	putmdockey(mpage, n->child, TYPE_Fn);
+	if (n->sec == SEC_SYNOPSIS)
+		putmdockey(mpage, n->child, NAME_SYN);
+	return(0);
+}
+
+static int
+parse_mdoc_Xr(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
+{
 	char	*cp;
 
 	if (NULL == (n = n->child))
@@ -1668,7 +1708,8 @@ parse_mdoc_Xr(struct mpage *mpage, const struct mdoc_n
 }
 
 static int
-parse_mdoc_Nd(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_Nd(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
 
 	if (MDOC_BODY == n->type)
@@ -1677,32 +1718,46 @@ parse_mdoc_Nd(struct mpage *mpage, const struct mdoc_n
 }
 
 static int
-parse_mdoc_Nm(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_Nm(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
 
 	if (SEC_NAME == n->sec)
 		putmdockey(mpage, n->child, NAME_TITLE);
-	else if (SEC_SYNOPSIS == n->sec && MDOC_HEAD == n->type)
-		putmdockey(mpage, n->child, NAME_SYN);
+	else if (SEC_SYNOPSIS == n->sec && MDOC_HEAD == n->type) {
+		if (n->child == NULL)
+			putkey(mpage, meta->name, NAME_SYN);
+		else
+			putmdockey(mpage, n->child, NAME_SYN);
+	}
+	if ( ! (mpage->name_head_done ||
+	    n->child == NULL || n->child->string == NULL ||
+	    strcasecmp(n->child->string, meta->title))) {
+		putkey(mpage, n->child->string, NAME_HEAD);
+		mpage->name_head_done = 1;
+	}
 	return(0);
 }
 
 static int
-parse_mdoc_Sh(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_Sh(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
 
 	return(SEC_CUSTOM == n->sec && MDOC_HEAD == n->type);
 }
 
 static int
-parse_mdoc_head(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_head(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
 
 	return(MDOC_HEAD == n->type);
 }
 
 static int
-parse_mdoc_body(struct mpage *mpage, const struct mdoc_node *n)
+parse_mdoc_body(struct mpage *mpage, const struct mdoc_meta *meta,
+	const struct mdoc_node *n)
 {
 
 	return(MDOC_BODY == n->type);
@@ -1714,18 +1769,19 @@ parse_mdoc_body(struct mpage *mpage, const struct mdoc
  * When we finish the manual, we'll dump the table.
  */
 static void
-putkeys(const struct mpage *mpage,
-	const char *cp, size_t sz, uint64_t v)
+putkeys(const struct mpage *mpage, char *cp, size_t sz, uint64_t v)
 {
 	struct ohash	*htab;
 	struct str	*s;
 	const char	*end;
 	unsigned int	 slot;
-	int		 i;
+	int		 i, mustfree;
 
 	if (0 == sz)
 		return;
 
+	mustfree = render_string(&cp, &sz);
+
 	if (TYPE_Nm & v) {
 		htab = &names;
 		v &= name_mask;
@@ -1733,7 +1789,7 @@ putkeys(const struct mpage *mpage,
 			name_mask &= ~NAME_FIRST;
 		if (debug > 1)
 			say(mpage->mlinks->file,
-			    "Adding name %*s", sz, cp);
+			    "Adding name %*s, bits=%d", sz, cp, v);
 	} else {
 		htab = &strings;
 		if (debug > 1)
@@ -1758,6 +1814,9 @@ putkeys(const struct mpage *mpage,
 	}
 	s->mpage = mpage;
 	s->mask = v;
+
+	if (mustfree)
+		free(cp);
 }
 
 /*
@@ -1813,21 +1872,20 @@ utf8(unsigned int cp, char out[7])
 }
 
 /*
- * Store the rendered version of a key, or alias the pointer
- * if the key contains no escape sequences.
+ * If the string contains escape sequences,
+ * replace it with an allocated rendering and return 1,
+ * such that the caller can free it after use.
+ * Otherwise, do nothing and return 0.
  */
-static void
-render_key(struct mchars *mc, struct str *key)
+static int
+render_string(char **public, size_t *psz)
 {
-	size_t		 sz, bsz, pos;
+	const char	*src, *scp, *addcp, *seq;
+	char		*dst;
+	size_t		 ssz, dsz, addsz;
 	char		 utfbuf[7], res[6];
-	char		*buf;
-	const char	*seq, *cpp, *val;
-	int		 len, u;
-	enum mandoc_esc	 esc;
+	int		 seqlen, unicode;
 
-	assert(NULL == key->rendered);
-
 	res[0] = '\\';
 	res[1] = '\t';
 	res[2] = ASCII_NBRSP;
@@ -1835,68 +1893,62 @@ render_key(struct mchars *mc, struct str *key)
 	res[4] = ASCII_BREAK;
 	res[5] = '\0';
 
-	val = key->key;
-	bsz = strlen(val);
+	src = scp = *public;
+	ssz = *psz;
+	dst = NULL;
+	dsz = 0;
 
-	/*
-	 * Pre-check: if we have no stop-characters, then set the
-	 * pointer as ourselvse and get out of here.
-	 */
-	if (strcspn(val, res) == bsz) {
-		key->rendered = key->key;
-		return;
-	}
+	while (scp < src + *psz) {
 
-	/* Pre-allocate by the length of the input */
+		/* Leave normal characters unchanged. */
 
-	buf = mandoc_malloc(++bsz);
-	pos = 0;
+		if (strchr(res, *scp) == NULL) {
+			if (dst != NULL)
+				dst[dsz++] = *scp;
+			scp++;
+			continue;
+		}
 
-	while ('\0' != *val) {
 		/*
-		 * Halt on the first escape sequence.
-		 * This also halts on the end of string, in which case
-		 * we just copy, fallthrough, and exit the loop.
+		 * Found something that requires replacing,
+		 * make sure we have a destination buffer.
 		 */
-		if ((sz = strcspn(val, res)) > 0) {
-			memcpy(&buf[pos], val, sz);
-			pos += sz;
-			val += sz;
+
+		if (dst == NULL) {
+			dst = mandoc_malloc(ssz + 1);
+			dsz = scp - src;
+			memcpy(dst, src, dsz);
 		}
 
-		switch (*val) {
-		case ASCII_HYPH:
-			buf[pos++] = '-';
-			val++;
-			continue;
+		/* Handle single-char special characters. */
+
+		switch (*scp) {
+		case '\\':
+			break;
 		case '\t':
 			/* FALLTHROUGH */
 		case ASCII_NBRSP:
-			buf[pos++] = ' ';
-			val++;
+			dst[dsz++] = ' ';
+			scp++;
+			continue;
+		case ASCII_HYPH:
+			dst[dsz++] = '-';
 			/* FALLTHROUGH */
 		case ASCII_BREAK:
+			scp++;
 			continue;
 		default:
-			break;
+			abort();
 		}
-		if ('\\' != *val)
-			break;
 
-		/* Read past the slash. */
-
-		val++;
-
 		/*
-		 * Parse the escape sequence and see if it's a
-		 * predefined character or special character.
+		 * Found an escape sequence.
+		 * Read past the slash, then parse it.
+		 * Ignore everything except characters.
 		 */
 
-		esc = mandoc_escape((const char **)&val,
-		    &seq, &len);
-		if (ESCAPE_ERROR == esc)
-			break;
-		if (ESCAPE_SPECIAL != esc)
+		scp++;
+		if (mandoc_escape(&scp, &seq, &seqlen) != ESCAPE_SPECIAL)
 			continue;
 
 		/*
@@ -1905,32 +1957,44 @@ render_key(struct mchars *mc, struct str *key)
 		 */
 
 		if (write_utf8) {
-			if ((u = mchars_spec2cp(mc, seq, len)) <= 0)
+			unicode = mchars_spec2cp(mchars, seq, seqlen);
+			if (unicode <= 0)
 				continue;
-			cpp = utfbuf;
-			if (0 == (sz = utf8(u, utfbuf)))
+			addsz = utf8(unicode, utfbuf);
+			if (addsz == 0)
 				continue;
-			sz = strlen(cpp);
+			addcp = utfbuf;
 		} else {
-			cpp = mchars_spec2str(mc, seq, len, &sz);
-			if (NULL == cpp)
+			addcp = mchars_spec2str(mchars, seq, seqlen, &addsz);
+			if (addcp == NULL)
 				continue;
-			if (ASCII_NBRSP == *cpp) {
-				cpp = " ";
-				sz = 1;
+			if (*addcp == ASCII_NBRSP) {
+				addcp = " ";
+				addsz = 1;
 			}
 		}
 
 		/* Copy the rendered glyph into the stream. */
 
-		bsz += sz;
-		buf = mandoc_realloc(buf, bsz);
-		memcpy(&buf[pos], cpp, sz);
-		pos += sz;
+		ssz += addsz;
+		dst = mandoc_realloc(dst, ssz + 1);
+		memcpy(dst + dsz, addcp, addsz);
+		dsz += addsz;
 	}
+	if (dst != NULL) {
+		*public = dst;
+		*psz = dsz;
+	}
 
-	buf[pos] = '\0';
-	key->rendered = buf;
+	/* Trim trailing whitespace and NUL-terminate. */
+
+	while (*psz > 0 && (*public)[*psz - 1] == ' ')
+		--*psz;
+	if (dst != NULL) {
+		(*public)[*psz] = '\0';
+		return(1);
+	} else
+		return(0);
 }
 
 static void
@@ -1950,12 +2014,21 @@ dbadd_mlink(const struct mlink *mlink)
 static void
 dbadd_mlink_name(const struct mlink *mlink)
 {
+	uint64_t	 bits;
 	size_t		 i;
 
 	dbadd_mlink(mlink);
 
 	i = 1;
-	SQL_BIND_INT64(stmts[STMT_INSERT_NAME], i, NAME_FILE & NAME_MASK);
+	SQL_BIND_INT64(stmts[STMT_SELECT_NAME], i, mlink->mpage->pageid);
+	bits = NAME_FILE & NAME_MASK;
+	if (sqlite3_step(stmts[STMT_SELECT_NAME]) == SQLITE_ROW) {
+		bits |= sqlite3_column_int64(stmts[STMT_SELECT_NAME], 0);
+		sqlite3_reset(stmts[STMT_SELECT_NAME]);
+	}
+
+	i = 1;
+	SQL_BIND_INT64(stmts[STMT_INSERT_NAME], i, bits);
 	SQL_BIND_TEXT(stmts[STMT_INSERT_NAME], i, mlink->name);
 	SQL_BIND_INT64(stmts[STMT_INSERT_NAME], i, mlink->mpage->pageid);
 	SQL_STEP(stmts[STMT_INSERT_NAME]);
@@ -1969,28 +2042,24 @@ dbadd_mlink_name(const struct mlink *mlink)
  * Also, handle escape sequences at the last possible moment.
  */
 static void
-dbadd(struct mpage *mpage, struct mchars *mc)
+dbadd(struct mpage *mpage)
 {
 	struct mlink	*mlink;
 	struct str	*key;
+	char		*cp;
 	size_t		 i;
 	unsigned int	 slot;
+	int		 mustfree;
 
 	mlink = mpage->mlinks;
 
 	if (nodb) {
 		for (key = ohash_first(&names, &slot); NULL != key;
-		     key = ohash_next(&names, &slot)) {
-			if (key->rendered != key->key)
-				free(key->rendered);
+		     key = ohash_next(&names, &slot))
 			free(key);
-		}
 		for (key = ohash_first(&strings, &slot); NULL != key;
-		     key = ohash_next(&strings, &slot)) {
-			if (key->rendered != key->key)
-				free(key->rendered);
+		     key = ohash_next(&strings, &slot))
 			free(key);
-		}
 		if (0 == debug)
 			return;
 		while (NULL != mlink) {
@@ -2019,22 +2088,18 @@ dbadd(struct mpage *mpage, struct mchars *mc)
 	if (debug)
 		say(mlink->file, "Adding to database");
 
-	i = strlen(mpage->desc) + 1;
-	key = mandoc_calloc(1, sizeof(struct str) + i);
-	memcpy(key->key, mpage->desc, i);
-	render_key(mc, key);
-
+	cp = mpage->desc;
+	i = strlen(cp);
+	mustfree = render_string(&cp, &i);
 	i = 1;
-	SQL_BIND_TEXT(stmts[STMT_INSERT_PAGE], i, key->rendered);
+	SQL_BIND_TEXT(stmts[STMT_INSERT_PAGE], i, cp);
 	SQL_BIND_INT(stmts[STMT_INSERT_PAGE], i, mpage->form);
 	SQL_STEP(stmts[STMT_INSERT_PAGE]);
 	mpage->pageid = sqlite3_last_insert_rowid(db);
 	sqlite3_reset(stmts[STMT_INSERT_PAGE]);
+	if (mustfree)
+		free(cp);
 
-	if (key->rendered != key->key)
-		free(key->rendered);
-	free(key);
-
 	while (NULL != mlink) {
 		dbadd_mlink(mlink);
 		mlink = mlink->next;
@@ -2044,31 +2109,23 @@ dbadd(struct mpage *mpage, struct mchars *mc)
 	for (key = ohash_first(&names, &slot); NULL != key;
 	     key = ohash_next(&names, &slot)) {
 		assert(key->mpage == mpage);
-		if (NULL == key->rendered)
-			render_key(mc, key);
 		i = 1;
 		SQL_BIND_INT64(stmts[STMT_INSERT_NAME], i, key->mask);
-		SQL_BIND_TEXT(stmts[STMT_INSERT_NAME], i, key->rendered);
+		SQL_BIND_TEXT(stmts[STMT_INSERT_NAME], i, key->key);
 		SQL_BIND_INT64(stmts[STMT_INSERT_NAME], i, mpage->pageid);
 		SQL_STEP(stmts[STMT_INSERT_NAME]);
 		sqlite3_reset(stmts[STMT_INSERT_NAME]);
-		if (key->rendered != key->key)
-			free(key->rendered);
 		free(key);
 	}
 	for (key = ohash_first(&strings, &slot); NULL != key;
 	     key = ohash_next(&strings, &slot)) {
 		assert(key->mpage == mpage);
-		if (NULL == key->rendered)
-			render_key(mc, key);
 		i = 1;
 		SQL_BIND_INT64(stmts[STMT_INSERT_KEY], i, key->mask);
-		SQL_BIND_TEXT(stmts[STMT_INSERT_KEY], i, key->rendered);
+		SQL_BIND_TEXT(stmts[STMT_INSERT_KEY], i, key->key);
 		SQL_BIND_INT64(stmts[STMT_INSERT_KEY], i, mpage->pageid);
 		SQL_STEP(stmts[STMT_INSERT_KEY]);
 		sqlite3_reset(stmts[STMT_INSERT_KEY]);
-		if (key->rendered != key->key)
-			free(key->rendered);
 		free(key);
 	}
 }
@@ -2268,7 +2325,8 @@ create_tables:
 	      " \"bits\" INTEGER NOT NULL,\n"
 	      " \"name\" TEXT NOT NULL,\n"
 	      " \"pageid\" INTEGER NOT NULL REFERENCES mpages(pageid) "
-		"ON DELETE CASCADE\n"
+		"ON DELETE CASCADE,\n"
+	      " UNIQUE (\"name\", \"pageid\") ON CONFLICT REPLACE\n"
 	      ");\n"
 	      "\n"
 	      "CREATE TABLE \"keys\" (\n"
@@ -2306,6 +2364,8 @@ prepare_statements:
 	sql = "INSERT INTO mlinks "
 		"(sec,arch,name,pageid) VALUES (?,?,?,?)";
 	sqlite3_prepare_v2(db, sql, -1, &stmts[STMT_INSERT_LINK], NULL);
+	sql = "SELECT bits FROM names where pageid = ?";
+	sqlite3_prepare_v2(db, sql, -1, &stmts[STMT_SELECT_NAME], NULL);
 	sql = "INSERT INTO names "
 		"(bits,name,pageid) VALUES (?,?,?)";
 	sqlite3_prepare_v2(db, sql, -1, &stmts[STMT_INSERT_NAME], NULL);