Update to 1.12.3.

*** 1,8 ****
! /*      $Id: libmandoc.h,v 1.29 2011/12/02 01:37:14 schwarze Exp $ */
  /*
!  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   *
   * 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.
   *
--- 1,9 ----
! /*      $Id: libmandoc.h,v 1.35 2013/12/15 21:23:52 schwarze Exp $ */
  /*
!  * Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
!  * Copyright (c) 2013 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.
   *
*** 27,41 ****
          ROFF_TBL, /* a table row was successfully parsed */
          ROFF_EQN, /* an equation was successfully parsed */
          ROFF_ERR /* badness: puke and stop */
  };
  
- enum    regs {
-         REG_nS = 0, /* nS register */
-         REG__MAX
- };
- 
  __BEGIN_DECLS
  
  struct  roff;
  struct  mdoc;
  struct  man;
--- 28,37 ----
*** 45,60 ****
  void             mandoc_vmsg(enum mandocerr, struct mparse *, 
                          int, int, const char *, ...);
  char            *mandoc_getarg(struct mparse *, char **, int, int *);
  char            *mandoc_normdate(struct mparse *, char *, int, int);
  int              mandoc_eos(const char *, size_t, int);
- int              mandoc_getcontrol(const char *, int *);
  int              mandoc_strntoi(const char *, size_t, int);
  const char      *mandoc_a2msec(const char*);
  
  void             mdoc_free(struct mdoc *);
! struct  mdoc    *mdoc_alloc(struct roff *, struct mparse *);
  void             mdoc_reset(struct mdoc *);
  int              mdoc_parseln(struct mdoc *, int, char *, int);
  int              mdoc_endparse(struct mdoc *);
  int              mdoc_addspan(struct mdoc *, const struct tbl_span *);
  int              mdoc_addeqn(struct mdoc *, const struct eqn *);
--- 41,55 ----
  void             mandoc_vmsg(enum mandocerr, struct mparse *, 
                          int, int, const char *, ...);
  char            *mandoc_getarg(struct mparse *, char **, int, int *);
  char            *mandoc_normdate(struct mparse *, char *, int, int);
  int              mandoc_eos(const char *, size_t, int);
  int              mandoc_strntoi(const char *, size_t, int);
  const char      *mandoc_a2msec(const char*);
  
  void             mdoc_free(struct mdoc *);
! struct  mdoc    *mdoc_alloc(struct roff *, struct mparse *, char *);
  void             mdoc_reset(struct mdoc *);
  int              mdoc_parseln(struct mdoc *, int, char *, int);
  int              mdoc_endparse(struct mdoc *);
  int              mdoc_addspan(struct mdoc *, const struct tbl_span *);
  int              mdoc_addeqn(struct mdoc *, const struct eqn *);
*** 66,84 ****
  int              man_endparse(struct man *);
  int              man_addspan(struct man *, const struct tbl_span *);
  int              man_addeqn(struct man *, const struct eqn *);
  
  void             roff_free(struct roff *);
! struct roff     *roff_alloc(struct mparse *);
  void             roff_reset(struct roff *);
  enum rofferr     roff_parseln(struct roff *, int, 
                          char **, size_t *, int, int *);
  void             roff_endparse(struct roff *);
! int              roff_regisset(const struct roff *, enum regs);
! unsigned int     roff_regget(const struct roff *, enum regs);
! void             roff_regunset(struct roff *, enum regs);
  char            *roff_strdup(const struct roff *, const char *);
  #if 0
  char             roff_eqndelim(const struct roff *);
  void             roff_openeqn(struct roff *, const char *, 
                          int, int, const char *);
  int              roff_closeeqn(struct roff *);
--- 61,80 ----
  int              man_endparse(struct man *);
  int              man_addspan(struct man *, const struct tbl_span *);
  int              man_addeqn(struct man *, const struct eqn *);
  
  void             roff_free(struct roff *);
! struct roff     *roff_alloc(enum mparset, struct mparse *);
  void             roff_reset(struct roff *);
  enum rofferr     roff_parseln(struct roff *, int, 
                          char **, size_t *, int, int *);
  void             roff_endparse(struct roff *);
! void             roff_setreg(struct roff *, const char *, int, char sign);
! int              roff_getreg(const struct roff *, const char *);
  char            *roff_strdup(const struct roff *, const char *);
+ int              roff_getcontrol(const struct roff *, 
+                         const char *, int *);
  #if 0
  char             roff_eqndelim(const struct roff *);
  void             roff_openeqn(struct roff *, const char *, 
                          int, int, const char *);
  int              roff_closeeqn(struct roff *);