par_text/par-1.53-i18n.1.patch

---
 buffer.c      |    8 -
 buffer.h      |    1 
 charset.c     |   65 ++++----
 charset.h     |    9 -
 errmsg.c      |   12 +
 errmsg.h      |   12 +
 par.c         |  444 ++++++++++++++++++++++++++++++----------------------------
 protoMakefile |    8 -
 reformat.c    |  168 +++++++++++++--------
 reformat.h    |    6 
 releasenotes  |   16 ++
 12 files changed, 423 insertions(+), 328 deletions(-)

--- a/buffer.c
+++ b/buffer.c
@@ -3,6 +3,7 @@ buffer.c
 last touched in Par 1.53.0
 last meaningful change in Par 1.50
 Copyright 1993, 1996 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
@@ -20,6 +21,7 @@ Language, Second Edition, by Kerninghan
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
+#include <wchar.h>
 
 #undef NULL
 #define NULL ((void *) 0)
@@ -62,7 +64,7 @@ buffer *newbuffer(size_t itemsize, errms
   blk = malloc(sizeof (block));
   items = malloc(maxhere * itemsize);
   if (!buf || !blk || !items) {
-    strcpy(errmsg,outofmem);
+    wcscpy(errmsg,outofmem);
     goto nberror;
   }
 
@@ -129,7 +131,7 @@ void additem(buffer *buf, const void *it
       new = malloc(sizeof (block));
       items = malloc(maxhere * itemsize);
       if (!new || !items) {
-        strcpy(errmsg,outofmem);
+        wcscpy(errmsg,outofmem);
         goto aierror;
       }
       blk->next = new;
@@ -176,7 +178,7 @@ void *copyitems(buffer *buf, errmsg_t er
 
   r = malloc(n * itemsize);
   if (!r) {
-    strcpy(errmsg,outofmem);
+    wcscpy(errmsg,outofmem);
     return NULL;
   }
 
--- a/buffer.h
+++ b/buffer.h
@@ -3,6 +3,7 @@ buffer.h
 last touched in Par 1.53.0
 last meaningful change in Par 1.31
 Copyright 1993 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
--- a/charset.c
+++ b/charset.c
@@ -3,6 +3,7 @@ charset.c
 last touched in Par 1.53.0
 last meaningful change in Par 1.53.0
 Copyright 1993, 2001, 2020 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
@@ -26,6 +27,8 @@ sequence.  See the comments near the beg
 #include <ctype.h>
 #include <stddef.h>
 #include <stdio.h>
+#include <wchar.h>
+#include <wctype.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -40,8 +43,8 @@ sequence.  See the comments near the beg
 typedef unsigned char csflag_t;
 
 struct charset {
-  char *inlist;    /* Characters in inlist are in the set.                */
-  char *outlist;   /* Characters in outlist are not in the set.           */
+  wchar_t *inlist;    /* Characters in inlist are in the set.                */
+  wchar_t *outlist;   /* Characters in outlist are not in the set.           */
                    /* inlist and outlist must have no common characters.  */
                    /* inlist and outlist may be NULL, which acts like "". */
   csflag_t flags;  /* Characters in neither list are in the set if they   */
@@ -60,25 +63,25 @@ static const csflag_t
   CS_NUL   = 32;  /* Includes the NUL character.        */
 
 
-static int appearsin(char c, const char *str)
+static int appearsin(wchar_t c, const wchar_t *str)
 
 /* Returns 0 if c is '\0' or str is NULL or c     */
 /* does not appear in *str.  Otherwise returns 1. */
 {
-  return c && str && strchr(str,c);
+  return c && str && wcschr(str,c);
 }
 
 
-static int hexdigtoint(char c)
+static int hexdigtoint(wchar_t c)
 
 /* Returns the value represented by the hexadecimal */
 /* digit c, or -1 if c is not a hexadecimal digit.  */
 {
-  const char *p, * const hexdigits = "0123456789ABCDEFabcdef";
+  const wchar_t *p, * const hexdigits = L"0123456789ABCDEFabcdef";
   int n;
 
   if (!c) return -1;
-  p = strchr(hexdigits, *(unsigned char *)&c);
+  p = wcschr(hexdigits, c);
   if (!p) return -1;
   n = p - hexdigits;
   if (n >= 16) n -= 6;
@@ -91,39 +94,40 @@ static int hexdigtoint(char c)
 }
 
 
-charset *parsecharset(const char *str, errmsg_t errmsg)
+charset *parsecharset(const wchar_t *str, errmsg_t errmsg)
 {
   charset *cset = NULL;
   buffer *cbuf = NULL;
-  const char *p, * const singleescapes = "_sbqQx";
+  const wchar_t *p, * const singleescapes = L"_sbqQx";
   int hex1, hex2;
-  char ch;
+  wchar_t ch;
 
   cset = malloc(sizeof (charset));
   if (!cset) {
-    strcpy(errmsg,outofmem);
+    wcscpy(errmsg,outofmem);
     goto pcserror;
   }
   cset->inlist = cset->outlist = NULL;
   cset->flags = 0;
 
-  cbuf = newbuffer(sizeof (char), errmsg);
+  cbuf = newbuffer(sizeof (wchar_t), errmsg);
   if (*errmsg) goto pcserror;
 
   for (p = str;  *p;  ++p)
-    if (*p == '_') {
+    if (*p == L'_') {
       ++p;
       if (appearsin(*p, singleescapes)) {
-        if      (*p == '_') ch = '_' ;
-        else if (*p == 's') ch = ' ' ;
-        else if (*p == 'b') ch = '\\';
-        else if (*p == 'q') ch = '\'';
-        else if (*p == 'Q') ch = '\"';
+        if      (*p == L'_') ch = L'_' ;
+        else if (*p == L's') ch = L' ' ;
+        else if (*p == L'b') ch = L'\\';
+        else if (*p == L'q') ch = L'\'';
+        else if (*p == L'Q') ch = L'\"';
         else /*  *p == 'x'  */ {
+          /* FIXME _x metacharacter should allow wide characters input.*/
           hex1 = hexdigtoint(p[1]);
           hex2 = hexdigtoint(p[2]);
           if (hex1 < 0  ||  hex2 < 0) goto pcsbadstr;
-          *(unsigned char *)&ch = 16 * hex1 + hex2;
+          ch = 16 * hex1 + hex2;
           p += 2;
         }
         if (!ch)
@@ -134,11 +138,11 @@ charset *parsecharset(const char *str, e
         }
       }
       else {
-        if      (*p == 'A') cset->flags |= CS_UCASE;
-        else if (*p == 'a') cset->flags |= CS_LCASE;
-        else if (*p == '@') cset->flags |= CS_NCASE;
-        else if (*p == '0') cset->flags |= CS_DIGIT;
-        else if (*p == 'S') cset->flags |= CS_SPACE;
+        if      (*p == L'A') cset->flags |= CS_UCASE;
+        else if (*p == L'a') cset->flags |= CS_LCASE;
+        else if (*p == L'@') cset->flags |= CS_NCASE;
+        else if (*p == L'0') cset->flags |= CS_DIGIT;
+        else if (*p == L'S') cset->flags |= CS_SPACE;
         else goto pcsbadstr;
       }
     }
@@ -155,11 +159,12 @@ charset *parsecharset(const char *str, e
 pcscleanup:
 
   if (cbuf) freebuffer(cbuf);
+  //if (wstr) free(wstr);
   return cset;
 
 pcsbadstr:
 
-  sprintf(errmsg, "Bad charset syntax: %.*s\n", errmsg_size - 22, str);
+  swprintf(errmsg, errmsg_size, L"Bad charset syntax: %.*s\n", errmsg_size - 22, str);
 
 pcserror:
 
@@ -177,7 +182,7 @@ void freecharset(charset *cset)
 }
 
 
-int csmember(char c, const charset *cset)
+int csmember(wchar_t c, const charset *cset)
 {
   unsigned char uc;
 
@@ -212,16 +217,16 @@ static charset *csud(
 {
   charset *csu;
   buffer *inbuf = NULL, *outbuf = NULL;
-  char *lists[4], **list, *p, nullchar = '\0';
+  wchar_t *lists[4], **list, *p, nullchar = L'\0';
 
   csu = malloc(sizeof (charset));
   if (!csu) {
-    strcpy(errmsg,outofmem);
+    wcscpy(errmsg,outofmem);
     goto csuderror;
   }
-  inbuf = newbuffer(sizeof (char), errmsg);
+  inbuf = newbuffer(sizeof (wchar_t), errmsg);
   if (*errmsg) goto csuderror;
-  outbuf = newbuffer(sizeof (char), errmsg);
+  outbuf = newbuffer(sizeof (wchar_t), errmsg);
   if (*errmsg) goto csuderror;
   csu->inlist = csu->outlist = NULL;
   csu->flags =  u  ?  cset1->flags |  cset2->flags
--- a/charset.h
+++ b/charset.h
@@ -3,6 +3,7 @@ charset.h
 last touched in Par 1.53.0
 last meaningful change in Par 1.31
 Copyright 1993 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
@@ -15,13 +16,17 @@ always succeed, provided that they are p
 #ifndef CHARSET_H
 #define CHARSET_H
 
+/* In order to make wchar_t work, we need this definition */
+#define _XOPEN_SOURCE
+
+#include <wchar.h>
 #include "errmsg.h"
 
 
 typedef struct charset charset;
 
 
-charset *parsecharset(const char *str, errmsg_t errmsg);
+charset *parsecharset(const wchar_t *str, errmsg_t errmsg);
 
   /* parsecharset(str,errmsg) returns the set of characters defined by */
   /* str using charset syntax (see par.doc).  Returns NULL on failure. */
@@ -33,7 +38,7 @@ void freecharset(charset *cset);
   /* *cset.  cset may not be used after this call.      */
 
 
-int csmember(char c, const charset *cset);
+int csmember(wchar_t c, const charset *cset);
 
   /* csmember(c,cset) returns 1 if c is a member of *cset, 0 otherwise. */
 
--- a/errmsg.c
+++ b/errmsg.c
@@ -3,6 +3,7 @@ errmsg.c
 last touched in Par 1.53.0
 last meaningful change in Par 1.40
 Copyright 1993 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
@@ -12,8 +13,11 @@ This is ANSI C code (C89).
 #include "errmsg.h"  /* Makes sure we're consistent with the declarations. */
 
 
-const char * const outofmem =
-  "Out of memory.\n";
+const wchar_t * const outofmem =
+  L"Out of memory.\n";
 
-const char * const impossibility =
-  "Impossibility #%d has occurred.  Please report it.\n";
+const wchar_t * const mbserror =
+  L"Error in input multibyte string.\n";
+
+const wchar_t * const impossibility =
+  L"Impossibility #%d has occurred.  Please report it.\n";
--- a/errmsg.h
+++ b/errmsg.h
@@ -3,6 +3,7 @@ errmsg.h
 last touched in Par 1.53.0
 last meaningful change in Par 1.40
 Copyright 1993 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
@@ -12,7 +13,7 @@ This is ANSI C code (C89).
 #ifndef ERRMSG_H
 #define ERRMSG_H
 
-
+#include <wchar.h>
 #define errmsg_size 163
 
 /* This is the maximum number of characters that will  */
@@ -21,7 +22,7 @@ This is ANSI C code (C89).
 /* versions of this header file.                       */
 
 
-typedef char errmsg_t[errmsg_size];
+typedef wchar_t errmsg_t[errmsg_size];
 
 /* Any function which takes the argument errmsg_t errmsg must, before */
 /* returning, either set errmsg[0] to '\0' (indicating success), or   */
@@ -29,10 +30,13 @@ typedef char errmsg_t[errmsg_size];
 /* being careful not to overrun the space.                            */
 
 
-extern const char * const outofmem;
+extern const wchar_t * const outofmem;
   /* "Out of memory.\n" */
 
-extern const char * const impossibility;
+extern const wchar_t * const mbserror;
+  /* "Error in input multibyte string.\n" */
+
+extern const wchar_t * const impossibility;
   /* "Impossibility #%d has occurred.  Please report it.\n" */
 
 
--- a/par.c
+++ b/par.c
@@ -3,23 +3,26 @@ par.c
 last touched in Par 1.53.0
 last meaningful change in Par 1.53.0
 Copyright 1993, 1996, 2001, 2020 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
 */
 
-
 #include "buffer.h"
 #include "charset.h"
 #include "errmsg.h"
 #include "reformat.h"
 
-#include <ctype.h>
+#include <langinfo.h>
+#include <wchar.h>
+#include <wctype.h>
 #include <locale.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 
 #undef NULL
 #define NULL ((void *) 0)
@@ -28,56 +31,6 @@ This is ANSI C code (C89).
 #define free(ptr)
 #endif
 
-
-/*===
-
-Regarding char and unsigned char:  ANSI C is a nightmare in this
-respect.  Some functions, like puts(), strchr(), and getenv(), use char
-or char*, so they work well with character constants like 'a', which
-are char, and with argv, which is char**.  But several other functions,
-like getchar(), putchar(), and isdigit(), use unsigned char (converted
-to/from int).  Therefore innocent-looking code can be wrong, for
-example:
-
-    int c = getchar();
-    if (c == 'a') ...
-
-This is wrong because 'a' is char (converted to int) and could be
-negative, but getchar() returns unsigned char (converted to int), so c
-is always nonnegative or EOF.  For similar reasons, it is wrong to pass
-a char to a function that expects an unsigned char:
-
-    putchar('\n');
-    if (isdigit(argv[1][0])) ...
-
-Inevitably, we need to convert between char and unsigned char.  This can
-be done by integral conversion (casting or assigning a char to unsigned
-char or vice versa), or by aliasing (converting a pointer to char to
-a pointer to unsigned char (or vice versa) and then dereferencing
-it).  ANSI C requires that integral conversion alters the bits when the
-unsigned value is not representable in the signed type and the signed
-type does not use two's complement representation.  Aliasing, on the
-other hand, preserves the bits.  Although the C standard is not at all
-clear about which sort of conversion is appropriate for making the
-standard library functions interoperate, I think preserving the bits
-is what is needed.  Under that assumption, here are some examples of
-correct code:
-
-    int c = getchar();
-    char ch;
-
-    if (c != EOF) {
-      *(unsigned char *)&ch = c;
-      if (ch == 'a') ...
-      if (isdigit(c)) ...
-    }
-
-    char *s = ...
-    if (isdigit(*(unsigned char *)s)) ...
-
-===*/
-
-
 static const char * const usagemsg =
 "\n"
 "Options for par:\n"
@@ -119,7 +72,6 @@ static const char * const usagemsg =
 "\n"
 ;
 
-
 /* Structure for recording properties of lines within segments: */
 
 typedef unsigned char lflag_t;
@@ -129,7 +81,7 @@ typedef struct lineprop {
                   /* line, or the fallback prelen and suflen       */
                   /* of the IP containing a non-bodiless line.     */
   lflag_t flags;  /* Boolean properties (see below).               */
-  char rc;        /* The repeated character of a bodiless line.    */
+  wchar_t rc;     /* The repeated character of a bodiless line.    */
 } lineprop;
 
 /* Flags for marking boolean properties: */
@@ -145,15 +97,14 @@ static const lflag_t L_BODILESS = 1,  /*
 #define   issuperf(prop) (((prop)->flags & 8) != 0)
 #define   isvacant(prop) (isbodiless(prop) && (prop)->rc == ' ')
 
-
-static int digtoint(char c)
+static int digtoint(wchar_t c)
 
 /* Returns the value represented by the digit c, or -1 if c is not a digit. */
 {
-  const char *p, * const digits = "0123456789";
+  const wchar_t *p, * const digits = L"0123456789";
 
   if (!c) return -1;
-  p = strchr(digits,c);
+  p = wcschr(digits,c);
   return  p  ?  p - digits  :  -1;
 
   /* We can't simply return c - '0' because this is ANSI C code,  */
@@ -163,8 +114,7 @@ static int digtoint(char c)
   /* upper limit on CHAR_MAX.                                     */
 }
 
-
-static int strtoudec(const char *s, int *pn)
+static int strtoudec(const wchar_t *s, int *pn)
 
 /* Converts the longest prefix of string s consisting of decimal   */
 /* digits to an integer, which is stored in *pn.  Normally returns */
@@ -188,9 +138,8 @@ static int strtoudec(const char *s, int
   return 1;
 }
 
-
 static void parsearg(
-  const char *arg,
+  const wchar_t *arg,
   int *phelp,
   int *pversion,
   charset *bodychars,
@@ -223,81 +172,81 @@ static void parsearg(
 /* by the other pointers as appropriate.  *phelp and *pversion are boolean  */
 /* flags indicating whether the help and version options were supplied.     */
 {
-  const char *savearg = arg;
+  const wchar_t *savearg = arg;
   charset *chars, *change;
-  char oc;
+  wchar_t oc;
   int n;
 
   *errmsg = '\0';
 
-  if (*arg == '-') ++arg;
+  if (*arg == L'-') ++arg;
 
-  if (!strcmp(arg, "help")) {
+  if (!wcscmp(arg, L"help")) {
     *phelp = 1;
     return;
   }
 
-  if (!strcmp(arg, "version")) {
+  if (!wcscmp(arg, L"version")) {
     *pversion = 1;
     return;
   }
 
-  chars =  *arg == 'B'  ?  bodychars     :
-           *arg == 'P'  ?  protectchars  :
-           *arg == 'Q'  ?  quotechars    :
-           *arg == 'W'  ?  whitechars    :
-           *arg == 'Z'  ?  terminalchars :
+  chars =  *arg == L'B'  ?  bodychars     :
+           *arg == L'P'  ?  protectchars  :
+           *arg == L'Q'  ?  quotechars    :
+           *arg == L'W'  ?  whitechars    :
+           *arg == L'Z'  ?  terminalchars :
            NULL;
   if (chars) {
     ++arg;
-    if (*arg != '='  &&  *arg != '+'  &&  *arg != '-') goto badarg;
+    if (*arg != L'='  &&  *arg != L'+'  &&  *arg != L'-') goto badarg;
     change = parsecharset(arg + 1, errmsg);
     if (change) {
-      if      (*arg == '=')   csswap(chars,change);
-      else if (*arg == '+')   csadd(chars,change,errmsg);
-      else  /* *arg == '-' */ csremove(chars,change,errmsg);
+      if      (*arg == L'=')   csswap(chars,change);
+      else if (*arg == L'+')   csadd(chars,change,errmsg);
+      else  /* *arg == L'-' */ csremove(chars,change,errmsg);
       freecharset(change);
     }
     return;
   }
 
-  if (isdigit(*(unsigned char *)arg)) {
+  if (iswdigit(*arg)) {
     if (!strtoudec(arg, &n)) goto badarg;
     if (n <= 8) *pprefix = n;
     else *pwidth = n;
   }
 
   for (;;) {
-    while (isdigit(*(unsigned char *)arg)) ++arg;
+    while (iswdigit(*(unsigned char *)arg)) ++arg;
     oc = *arg;
     if (!oc) break;
     n = -1;
     if (!strtoudec(++arg, &n)) goto badarg;
-    if (   oc == 'h' || oc == 'p' || oc == 'r'
-        || oc == 's' || oc == 'T' || oc == 'w') {
-      if      (oc == 'h')   *phang   =  n >= 0 ? n :  1;
-      else if (oc == 'p')   *pprefix =  n;
-      else if (oc == 'r')   *prepeat =  n >= 0 ? n :  3;
-      else if (oc == 's')   *psuffix =  n;
-      else if (oc == 'T')   *pTab    =  n >= 0 ? n :  8;
-      else  /* oc == 'w' */ *pwidth  =  n >= 0 ? n : 79;
+    if (   oc == L'h' || oc == L'p' || oc == L'r'
+        || oc == L's' || oc == L'T' || oc == L'w') {
+      if      (oc == L'h')   *phang   =  n >= 0 ? n :  1;
+      else if (oc == L'p')   *pprefix =  n;
+      else if (oc == L'r')   *prepeat =  n >= 0 ? n :  3;
+      else if (oc == L's')   *psuffix =  n;
+      else if (oc == L'T')   *pTab    =  n >= 0 ? n :  8;
+      else  /* oc == L'w' */ *pwidth  =  n >= 0 ? n : 79;
     }
     else {
       if (n < 0) n = 1;
       if (n > 1) goto badarg;
-      if      (oc == 'b') *pbody   = n;
-      else if (oc == 'c') *pcap    = n;
-      else if (oc == 'd') *pdiv    = n;
-      else if (oc == 'E') *pErr    = n;
-      else if (oc == 'e') *pexpel  = n;
-      else if (oc == 'f') *pfit    = n;
-      else if (oc == 'g') *pguess  = n;
-      else if (oc == 'i') *pinvis  = n;
-      else if (oc == 'j') *pjust   = n;
-      else if (oc == 'l') *plast   = n;
-      else if (oc == 'q') *pquote  = n;
-      else if (oc == 'R') *pReport = n;
-      else if (oc == 't') *ptouch  = n;
+      if      (oc == L'b') *pbody   = n;
+      else if (oc == L'c') *pcap    = n;
+      else if (oc == L'd') *pdiv    = n;
+      else if (oc == L'E') *pErr    = n;
+      else if (oc == L'e') *pexpel  = n;
+      else if (oc == L'f') *pfit    = n;
+      else if (oc == L'g') *pguess  = n;
+      else if (oc == L'i') *pinvis  = n;
+      else if (oc == L'j') *pjust   = n;
+      else if (oc == L'l') *plast   = n;
+      else if (oc == L'q') *pquote  = n;
+      else if (oc == L'R') *pReport = n;
+      else if (oc == L't') *ptouch  = n;
       else goto badarg;
     }
   }
@@ -306,12 +255,11 @@ static void parsearg(
 
 badarg:
 
-  sprintf(errmsg, "Bad argument: %.*s\n", errmsg_size - 16, savearg);
+  swprintf(errmsg, errmsg_size, L"Bad argument: %.*s\n", errmsg_size - 16, savearg);
   *phelp = 1;
 }
 
-
-static char **readlines(
+static wchar_t **readlines(
   lineprop **pprops, const charset *protectchars,
   const charset *quotechars, const charset *whitechars,
   int Tab, int invis, int quote, errmsg_t errmsg
@@ -332,9 +280,11 @@ static char **readlines(
 /* it's not NULL.  On failure, returns NULL and sets *pprops to NULL.   */
 {
   buffer *cbuf = NULL, *lbuf = NULL, *lpbuf = NULL;
-  int c, empty, blank, firstline, qsonly, oldqsonly = 0, vlnlen, i;
-  char ch, *ln = NULL, nullchar = '\0', *nullline = NULL, *qpend,
-       *oldln = NULL, *oldqpend = NULL, *p, *op, *vln = NULL, **lines = NULL;
+  wint_t c;
+  int empty, blank, firstline, qsonly, oldqsonly = 0, vlnlen, i;
+  wchar_t *ln = NULL, nullchar = L'\0', *nullline = NULL, *qpend,
+
+    *oldln = NULL, *oldqpend = NULL, *p, *op, *vln = NULL, **lines = NULL;
   lineprop vprop = { 0, 0, 0, '\0' }, iprop = { 0, 0, 0, '\0' };
 
   /* oldqsonly, oldln, and oldquend don't really need to be initialized.   */
@@ -346,20 +296,25 @@ static char **readlines(
 
   *pprops = NULL;
 
-  cbuf = newbuffer(sizeof (char), errmsg);
+  cbuf = newbuffer(sizeof (wchar_t), errmsg);
   if (*errmsg) goto rlcleanup;
-  lbuf = newbuffer(sizeof (char *), errmsg);
+  lbuf = newbuffer(sizeof (wchar_t *), errmsg);
   if (*errmsg) goto rlcleanup;
   lpbuf = newbuffer(sizeof (lineprop), errmsg);
   if (*errmsg) goto rlcleanup;
 
   for (empty = blank = firstline = 1;  ;  ) {
-    c = getchar();
-    if (c == EOF) break;
-    *(unsigned char *)&ch = c;
-    if (ch == '\n') {
+    c = getwchar();
+    if (c == WEOF) {
+      if (errno == EILSEQ) {
+      	wcscpy(errmsg, L"Invalid multibyte sequence in input\n");
+	goto rlcleanup;
+      }
+      break;
+    }
+    if (c == L'\n') {
       if (blank) {
-        ungetc(c,stdin);
+        ungetwc(c,stdin);
         break;
       }
       additem(cbuf, &nullchar, errmsg);
@@ -368,9 +323,9 @@ static char **readlines(
       if (*errmsg) goto rlcleanup;
       if (quote) {
         for (qpend = ln;  *qpend && csmember(*qpend, quotechars);  ++qpend);
-        for (p = qpend;  *p == ' ' || csmember(*p, quotechars);  ++p);
-        qsonly =  *p == '\0';
-        while (qpend > ln && qpend[-1] == ' ') --qpend;
+        for (p = qpend;  *p == L' ' || csmember(*p, quotechars);  ++p);
+        qsonly =  (*p == L'\0');
+        while (qpend > ln && qpend[-1] == L' ') --qpend;
         if (!firstline) {
           for (p = ln, op = oldln;
                p < qpend && op < oldqpend && *p == *op;
@@ -378,23 +333,23 @@ static char **readlines(
           if (!(p == qpend && op == oldqpend)) {
             if (!invis && (oldqsonly || qsonly)) {
               if (oldqsonly) {
-                *op = '\0';
+                *op = L'\0';
                 oldqpend = op;
               }
               if (qsonly) {
-                *p = '\0';
+                *p = L'\0';
                 qpend = p;
               }
             }
             else {
               vlnlen = p - ln;
-              vln = malloc((vlnlen + 1) * sizeof (char));
+              vln = malloc((vlnlen + 1) * sizeof (wchar_t));
               if (!vln) {
-                strcpy(errmsg,outofmem);
+                wcscpy(errmsg,outofmem);
                 goto rlcleanup;
               }
-              strncpy(vln,ln,vlnlen);
-              vln[vlnlen] = '\0';
+              wcsncpy(vln, ln, vlnlen);
+              vln[vlnlen] = L'\0';
               additem(lbuf, &vln, errmsg);
               if (*errmsg) goto rlcleanup;
               additem(lpbuf, &iprop, errmsg);
@@ -418,24 +373,27 @@ static char **readlines(
     }
     else {
       if (empty) {
-        if (csmember(ch, protectchars)) {
-          ungetc(c,stdin);
+        if (csmember(c, protectchars)) {
+          ungetwc(c,stdin);
           break;
         }
         empty = 0;
       }
-      if (!ch) continue;
-      if (ch == '\t') {
-        ch = ' ';
+      if (!c) continue;
+      if (c == L'\t') {
+        c = L' ';
         for (i = Tab - numitems(cbuf) % Tab;  i > 0;  --i) {
-          additem(cbuf, &ch, errmsg);
+          additem(cbuf, &c, errmsg);
           if (*errmsg) goto rlcleanup;
         }
         continue;
       }
-      if (csmember(ch, whitechars)) ch = ' ';
+      // if (csmember(ch, whitechars)) ch = ' ';
+      if (iswspace(c))
+
+        c = L' ';
       else blank = 0;
-      additem(cbuf, &ch, errmsg);
+      additem(cbuf, &c, errmsg);
       if (*errmsg) goto rlcleanup;
     }
   }
@@ -477,9 +435,8 @@ rlcleanup:
   return lines;
 }
 
-
 static void compresuflen(
-  const char * const *lines, const char * const *endline,
+  const wchar_t * const *lines, const wchar_t * const *endline,
   const charset *bodychars, int body, int pre, int suf, int *ppre, int *psuf
 )
 /* lines is an array of strings, up to but not including endline.  */
@@ -487,7 +444,7 @@ static void compresuflen(
 /* lines in lines.  Assumes that they have already been determined */
 /* to be at least pre and suf.  endline must not equal lines.      */
 {
-  const char *start, *end, *knownstart, * const *line, *p1, *p2, *knownend,
+  const wchar_t *start, *end, *knownstart, * const *line, *p1, *p2, *knownend,
              *knownstart2;
 
   start = *lines;
@@ -504,7 +461,7 @@ static void compresuflen(
   }
   if (body)
     for (p1 = end;  p1 > knownstart;  )
-      if (*--p1 != ' ') {
+      if (*--p1 != L' ') {
         if (csmember(*p1, bodychars))
           end = p1;
         else
@@ -531,18 +488,17 @@ static void compresuflen(
   }
   if (body) {
     for (p1 = start;
-         start < knownend && (*start == ' ' || csmember(*start, bodychars));
+         start < knownend && (*start == L' ' || csmember(*start, bodychars));
          ++start);
-    if (start > p1 && start[-1] == ' ') --start;
+    if (start > p1 && start[-1] == L' ') --start;
   }
   else
-    while (end - start >= 2 && *start == ' ' && start[1] == ' ') ++start;
+    while (end - start >= 2 && *start == L' ' && start[1] == L' ') ++start;
   *psuf = end - start;
 }
 
-
 static void delimit(
-  const char * const *lines, const char * const *endline,
+  const wchar_t * const *lines, const wchar_t * const *endline,
   const charset *bodychars, int repeat, int body, int div,
   int pre, int suf, lineprop *props
 )
@@ -553,8 +509,8 @@ static void delimit(
 /* and comsuflen of the lines in lines have already been     */
 /* determined to be at least pre and suf, respectively.      */
 {
-  const char * const *line, *end, *p, * const *nextline;
-  char rc;
+  const wchar_t * const *line, *end, *p, * const *nextline;
+  wchar_t rc;
   lineprop *prop, *nextprop;
   int anybodiless = 0, status;
 
@@ -575,8 +531,8 @@ static void delimit(
     for (end = *line;  *end;  ++end);
     end -= suf;
     p = *line + pre;
-    rc =  p < end  ?  *p  :  ' ';
-    if (rc != ' ' && (isinserted(prop) || !repeat || end - p < repeat))
+    rc =  p < end  ?  *p  :  L' ';
+    if (rc != L' ' && (isinserted(prop) || !repeat || end - p < repeat))
       prop->flags &= ~L_BODILESS;
     else
       while (p < end) {
@@ -619,24 +575,23 @@ static void delimit(
   }
 
   line = lines, prop = props;
-  status = ((*lines)[pre] == ' ');
+  status = ((*lines)[pre] == L' ');
   do {
-    if (((*line)[pre] == ' ') == status)
+    if (((*line)[pre] == L' ') == status)
       prop->flags |= L_FIRST;
     ++line, ++prop;
   } while (line < endline);
 }
 
-
 static void marksuperf(
-  const char * const * lines, const char * const * endline, lineprop *props
+  const wchar_t * const * lines, const wchar_t * const * endline, lineprop *props
 )
 /* lines points to the first line of a segment, and endline to one  */
 /* line beyond the last line in the segment.  Sets L_SUPERF bits in */
 /* the flags fields of the props array whenever the corresponding   */
 /* line is superfluous.  L_BODILESS bits must already be set.       */
 {
-  const char * const *line, *p;
+  const wchar_t * const *line, *p;
   lineprop *prop, *mprop, dummy;
   int inbody, num, mnum;
 
@@ -649,7 +604,7 @@ static void marksuperf(
   for (line = lines, prop = props;  line < endline;  ++line, ++prop)
     if (isvacant(prop)) {
       for (num = 0, p = *line;  *p;  ++p)
-        if (*p != ' ') ++num;
+        if (*p != L' ') ++num;
       if (inbody || num < mnum)
         mnum = num, mprop = prop;
       inbody = 0;
@@ -657,11 +612,10 @@ static void marksuperf(
       if (!inbody) mprop->flags &= ~L_SUPERF;
       inbody = 1;
     }
-} 
-
+}
 
 static void setaffixes(
-  const char * const *inlines, const char * const *endline,
+  const wchar_t * const *inlines, const wchar_t * const *endline,
   const lineprop *props, const charset *bodychars,
   const charset *quotechars, int hang, int body, int quote,
   int *pafp, int *pfs, int *pprefix, int *psuffix
@@ -674,7 +628,7 @@ static void setaffixes(
 /* default value as specified in "par.doc".                            */
 {
   int numin, pre, suf;
-  const char *p;
+  const wchar_t *p;
 
   numin = endline - inlines;
 
@@ -695,12 +649,11 @@ static void setaffixes(
     *psuffix  =  numin > hang + 1  ?  suf  :  *pfs;
 }
 
-
-static void freelines(char **lines)
+static void freelines(wchar_t **lines)
 /* Frees the elements of lines, and lines itself. */
 /* lines is a NULL-terminated array of strings.   */
 {
-  char **line;
+  wchar_t **line;
 
   for (line = lines;  *line;  ++line)
     free(*line);
@@ -708,68 +661,118 @@ static void freelines(char **lines)
   free(lines);
 }
 
-
 int main(int argc, const char * const *argv)
 {
   int help = 0, version = 0, hang = 0, prefix = -1, repeat = 0, suffix = -1,
       Tab = 1, width = 72, body = 0, cap = 0, div = 0, Err = 0, expel = 0,
       fit = 0, guess = 0, invis = 0, just = 0, last = 0, quote = 0, Report = 0,
       touch = -1;
-  int prefixbak, suffixbak, c, sawnonblank, oweblank, n, i, afp, fs;
+  int prefixbak, suffixbak, sawnonblank, oweblank, n, i, afp, fs;
   charset *bodychars = NULL, *protectchars = NULL, *quotechars = NULL,
           *whitechars = NULL, *terminalchars = NULL;
-  char *parinit = NULL, *arg, **inlines = NULL, **endline, **firstline, *end,
-       **nextline, **outlines = NULL, **line, ch;
-  const char *env, * const init_whitechars = " \f\n\r\t\v";
+  wint_t c;
+  wchar_t *state;
+  wchar_t *parinit = NULL, *arg, **inlines = NULL, **endline, **firstline, *end,
+    **nextline, **outlines = NULL, **line;
+  const char *env;
+  wchar_t *wenv = NULL;
+  const wchar_t * const init_whitechars = L" \f\n\r\t\v";
   errmsg_t errmsg = { '\0' };
   lineprop *props = NULL, *firstprop, *nextprop;
   FILE *errout;
+  char *langinfo;
 
 /* Set the current locale from the environment: */
 
   setlocale(LC_ALL,"");
+  langinfo = nl_langinfo(CODESET);
+  if (!strcmp(langinfo, "ANSI_X3.4-1968")) {
+    // We would like to fallback in an 8 bits encoding, but it is not easily possible.
+    //setlocale(LC_CTYPE, "C");
+    //langinfo = nl_langinfo(CODESET);
+    fwprintf( Err ? stderr : stdout,
+
+        L"Warning: Locale seems not configured\n");
+  }
 
 /* Process environment variables: */
 
   env = getenv("PARBODY");
   if (!env) env = "";
-  bodychars = parsecharset(env,errmsg);
+  wenv = malloc((strlen(env) + 1) * sizeof (wchar_t));
+  if (!wenv) {
+    wcscpy(errmsg,outofmem);
+    goto parcleanup;
+  }
+  if (0 > mbstowcs(wenv,env, strlen(env) + 1)) {
+    wcscpy(errmsg, L"Invalid multibyte sequence in PARBODY\n");
+    goto parcleanup;
+  }
+  bodychars = parsecharset(wenv,errmsg);
   if (*errmsg) {
     help = 1;
     goto parcleanup;
   }
+  free(wenv);
+  wenv = NULL;
 
   env = getenv("PARPROTECT");
   if (!env) env = "";
-  protectchars = parsecharset(env,errmsg);
+  wenv = malloc((strlen(env) + 1) * sizeof (wchar_t));
+  if (!wenv) {
+    wcscpy(errmsg,outofmem);
+    goto parcleanup;
+  }
+  if (0 > mbstowcs(wenv,env, strlen(env) + 1)) {
+    wcscpy(errmsg, L"Invalid multibyte sequence in PARPROTECT\n");
+    goto parcleanup;
+  }
+  protectchars = parsecharset(wenv,errmsg);
   if (*errmsg) {
     help = 1;
     goto parcleanup;
   }
+  free(wenv);
+  wenv = NULL;
 
   env = getenv("PARQUOTE");
   if (!env) env = "> ";
-  quotechars = parsecharset(env,errmsg);
+  wenv = malloc((strlen(env) + 1) * sizeof (wchar_t));
+  if (!wenv) {
+    wcscpy(errmsg,outofmem);
+    goto parcleanup;
+  }
+  if (0 > mbstowcs(wenv,env, strlen(env) + 1)) {
+    wcscpy(errmsg, L"Invalid multibyte sequence in PARQUOTE\n");
+    goto parcleanup;
+  }
+  quotechars = parsecharset(wenv,errmsg);
   if (*errmsg) {
     help = 1;
     goto parcleanup;
   }
+  free(wenv);
+  wenv = NULL;
 
   whitechars = parsecharset(init_whitechars, errmsg);
   if (*errmsg) goto parcleanup;
 
-  terminalchars = parsecharset(".?!:", errmsg);
+  terminalchars = parsecharset(L".?!:", errmsg);
   if (*errmsg) goto parcleanup;
 
   env = getenv("PARINIT");
   if (env) {
-    parinit = malloc((strlen(env) + 1) * sizeof (char));
+    parinit = malloc((strlen(env) + 1) * sizeof (wchar_t));
     if (!parinit) {
-      strcpy(errmsg,outofmem);
+      wcscpy(errmsg,outofmem);
+      goto parcleanup;
+    }
+    if (0 > mbstowcs(parinit,env, strlen(env) + 1)) {
+      wcscpy(errmsg, L"Invalid multibyte sequence in PARINIT\n");
       goto parcleanup;
     }
-    strcpy(parinit,env);
-    arg = strtok(parinit, init_whitechars);
+
+    arg = wcstok(parinit, (const wchar_t *restrict)whitechars, &state);
     while (arg) {
       parsearg(arg, &help, &version,
                bodychars, protectchars, quotechars, whitechars, terminalchars,
@@ -777,7 +780,7 @@ int main(int argc, const char * const *a
                &body, &cap, &div, &Err, &expel, &fit, &guess,
                &invis, &just, &last, &quote, &Report, &touch, errmsg );
       if (*errmsg || help || version) goto parcleanup;
-      arg = strtok(NULL, init_whitechars);
+      arg = wcstok(NULL, (const wchar_t *restrict)whitechars, &state);
     }
     free(parinit);
     parinit = NULL;
@@ -786,16 +789,22 @@ int main(int argc, const char * const *a
 /* Process command line arguments: */
 
   while (*++argv) {
-    parsearg(*argv, &help, &version,
-             bodychars, protectchars, quotechars, whitechars, terminalchars,
+    arg = malloc((strlen(*argv) + 1) * sizeof (wchar_t));
+    if (0 > mbstowcs(arg, *argv, strlen(*argv) + 1)) {
+      wcscpy(errmsg, L"Invalid multibyte sequence in argument\n");
+      goto parcleanup;
+    }
+    parsearg(arg, &help, &version, bodychars, protectchars,
+             quotechars, whitechars, terminalchars,
              &hang, &prefix, &repeat, &suffix, &Tab, &width,
              &body, &cap, &div, &Err, &expel, &fit, &guess,
              &invis, &just, &last, &quote, &Report, &touch, errmsg );
+    free(arg);
     if (*errmsg || help || version) goto parcleanup;
   }
 
   if (Tab == 0) {
-    strcpy(errmsg, "<Tab> must not be 0.\n");
+    wcscpy(errmsg, L"<Tab> must not be 0.\n");
     goto parcleanup;
   }
 
@@ -807,31 +816,41 @@ int main(int argc, const char * const *a
 
   for (sawnonblank = oweblank = 0;  ;  ) {
     for (;;) {
-      c = getchar();
-      if (c == EOF) break;
-      *(unsigned char *)&ch = c;
-      if (expel && ch == '\n') {
+      c = getwchar();
+      if (c == WEOF) {
+        if (errno == EILSEQ) {
+          wcscpy(errmsg, L"Invalid multibyte sequence in input\n");
+          goto parcleanup;
+        }
+        break;
+      }
+      if (expel && c == L'\n') {
         oweblank = sawnonblank;
         continue;
       }
-      if (csmember(ch, protectchars)) {
+      if (csmember(c, protectchars)) {
         sawnonblank = 1;
         if (oweblank) {
-          puts("");
+          fputwc(L'\n', stdout);
           oweblank = 0;
         }
-        while (ch != '\n') {
-          putchar(c);
-          c = getchar();
-          if (c == EOF) break;
-          *(unsigned char *)&ch = c;
+        while (c != L'\n') {
+          putwchar(c);
+          c = getwchar();
+          if (c == WEOF) {
+            if (errno == EILSEQ) {
+              wcscpy(errmsg, L"Invalid multibyte sequence in input\n");
+              goto parcleanup;
+            }
+            break;
+          }
         }
       }
-      if (ch != '\n') break;  /* subsumes the case that c == EOF */
-      putchar(c);
+      if (c != L'\n') break;  /* subsumes the case that c == EOF */
+      putwchar(c);
     }
-    if (c == EOF) break;
-    ungetc(c,stdin);
+    if (c == WEOF) break;
+    ungetwc(c,stdin);
 
     inlines =
       readlines(&props, protectchars, quotechars, whitechars,
@@ -847,39 +866,40 @@ int main(int argc, const char * const *a
 
     sawnonblank = 1;
     if (oweblank) {
-      puts("");
+      fputwc(L'\n', stdout);
       oweblank = 0;
     }
 
-    delimit((const char * const *) inlines,
-            (const char * const *) endline,
+    delimit((const wchar_t * const *) inlines,
+            (const wchar_t * const *) endline,
             bodychars, repeat, body, div, 0, 0, props);
 
     if (expel)
-      marksuperf((const char * const *) inlines,
-                 (const char * const *) endline, props);
+      marksuperf((const wchar_t * const *) inlines,
+                 (const wchar_t * const *) endline, props);
 
     firstline = inlines, firstprop = props;
+
     do {
       if (isbodiless(firstprop)) {
         if (   !(invis && isinserted(firstprop))
             && !(expel && issuperf(firstprop))) {
           for (end = *firstline;  *end;  ++end);
-          if (!repeat || (firstprop->rc == ' ' && !firstprop->s)) {
-            while (end > *firstline && end[-1] == ' ') --end;
-            *end = '\0';
-            puts(*firstline);
+          if (!repeat || (firstprop->rc == L' ' && !firstprop->s)) {
+            while (end > *firstline && end[-1] == L' ') --end;
+            *end = L'\0';
+            fwprintf(stdout, L"%ls\n", *firstline);
           }
           else {
             n = width - firstprop->p - firstprop->s;
             if (n < 0) {
-              sprintf(errmsg,impossibility,5);
+              swprintf(errmsg,errmsg_size,impossibility,5);
               goto parcleanup;
             }
-            printf("%.*s", firstprop->p, *firstline);
+            fwprintf(stdout, L"%.*ls", firstprop->p, *firstline);
             for (i = n;  i;  --i)
-              putchar(*(unsigned char *)&firstprop->rc);
-            puts(end - firstprop->s);
+              fputwc(firstprop->rc, stdout);
+            fwprintf(stdout, L"%ls\n", end - firstprop->s);
           }
         }
         ++firstline, ++firstprop;
@@ -891,26 +911,26 @@ int main(int argc, const char * const *a
            ++nextline, ++nextprop);
 
       prefix = prefixbak, suffix = suffixbak;
-      setaffixes((const char * const *) firstline,
-                 (const char * const *) nextline, firstprop, bodychars,
+      setaffixes((const wchar_t * const *) firstline,
+                 (const wchar_t * const *) nextline, firstprop, bodychars,
                  quotechars, hang, body, quote, &afp, &fs, &prefix, &suffix);
       if (width <= prefix + suffix) {
-        sprintf(errmsg,
-                "<width> (%d) <= <prefix> (%d) + <suffix> (%d)\n",
+        swprintf(errmsg,errmsg_size,
+                L"<width> (%d) <= <prefix> (%d) + <suffix> (%d)\n",
                 width, prefix, suffix);
         goto parcleanup;
       }
 
       outlines =
-        reformat((const char * const *) firstline,
-                 (const char * const *) nextline,
+        reformat((const wchar_t * const *) firstline,
+                 (const wchar_t * const *) nextline,
                  afp, fs, hang, prefix, suffix, width, cap,
                  fit, guess, just, last, Report, touch,
                  (const charset *) terminalchars, errmsg);
       if (*errmsg) goto parcleanup;
 
       for (line = outlines;  *line;  ++line)
-        puts(*line);
+        fwprintf(stdout, L"%ls\n", *line);
 
       freelines(outlines);
       outlines = NULL;
@@ -926,7 +946,7 @@ int main(int argc, const char * const *a
   }
 
 parcleanup:
-
+  if (wenv) free(wenv);
   if (bodychars) freecharset(bodychars);
   if (protectchars) freecharset(protectchars);
   if (quotechars) freecharset(quotechars);
@@ -936,8 +956,12 @@ parcleanup:
   if (outlines) freelines(outlines);
 
   errout = Err ? stderr : stdout;
-  if (*errmsg) fprintf(errout, "par error:\n%.*s", errmsg_size, errmsg);
-  if (version) fputs("par 1.53.0\n",errout);
+  if (*errmsg) fwprintf(errout, L"par error:\n%.*ls", errmsg_size, errmsg);
+#ifdef NOWIDTH
+  if (version) fputws(L"par 1.52-i18n.4 (without wcwidth() support)\n",errout);
+#else
+  if (version) fputws(L"par 1.52-i18n.4\n",errout);
+#endif
   if (help)    fputs(usagemsg,errout);
 
   return *errmsg ? EXIT_FAILURE : EXIT_SUCCESS;
--- a/protoMakefile
+++ b/protoMakefile
@@ -45,9 +45,9 @@
 # Example (for Solaris 2.x with SPARCompiler C):
 # CC = cc -c -O -s -Xc -DDONTFREE
 
-CPPFLAGS =
-CFLAGS =
-CC = cc $(CPPFLAGS) $(CFLAGS) -c
+CPPFLAGS ?=
+CFLAGS ?=
+CC = cc -std=c99 $(CPPFLAGS) $(CFLAGS) -c
 
 # Define LINK1 and LINK2 so that the command
 #
@@ -62,7 +62,7 @@ CC = cc $(CPPFLAGS) $(CFLAGS) -c
 # LINK2 = -o
 
 LINK1 = cc
-LINK2 = -o
+LINK2 = $(CFLAGS) $(CPPFLAGS) -o
 
 # Define RM so that the command
 #
--- a/reformat.c
+++ b/reformat.c
@@ -3,6 +3,7 @@ reformat.c
 last touched in Par 1.53.0
 last meaningful change in Par 1.53.0
 Copyright 1993, 2001, 2020 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
@@ -23,6 +24,8 @@ the ctype.h functions.  See the comments
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <wchar.h>
+#include <wctype.h>
 
 #undef NULL
 #define NULL ((void *) 0)
@@ -35,14 +38,15 @@ the ctype.h functions.  See the comments
 typedef unsigned char wflag_t;
 
 typedef struct word {
-  const char *chrs;       /* Pointer to the characters in the word */
+  const wchar_t *chrs;    /* Pointer to the characters in the word */
                           /* (NOT terminated by '\0').             */
   struct word *prev,      /* Pointer to previous word.             */
               *next,      /* Pointer to next word.                 */
                           /* Supposing this word were the first... */
               *nextline;  /*   Pointer to first word in next line. */
   int score,              /*   Value of the objective function.    */
-      length;             /* Length of this word.                  */
+      length,             /* Length (in widechar) of this word.    */
+      width;              /* Visual width of this word.            */
   wflag_t flags;          /* Notable properties of this word.      */
 } word;
 
@@ -59,17 +63,39 @@ static const wflag_t
 #define iscurious(w) (((w)->flags & 2) != 0)
 #define iscapital(w) (((w)->flags & 4) != 0)
 
+static int getWidth(const wchar_t *beg, const wchar_t *end)
+/* Compute (visual) width of a  word. This function is aware */
+/* about double-width characters used in oriental langages.  */
+{
+  int ret, tmp;
+
+  for (ret = 0; beg != end; beg++) {
+#ifdef NOWIDTH
+    tmp = 1;
+#else
+    tmp = wcwidth(*beg);
+#endif
+    // BUG: It is not really easy to handle case of zero width characters.
+    // If we don't do this, size mallloc for q1 will be less than real
+    // size and program will segfault. So I prefer to have a bug than a segfault.
+    if (tmp <= 0)
+      tmp = 1;
+    ret += tmp;
+  }
+
+  return ret;
+}
 
 static int checkcapital(word *w)
 /* Returns 1 if *w is capitalized according to the definition */
 /* in par.doc (assuming <cap> is 0), or 0 if not.             */
 {
-  const char *p, *end;
+  const wchar_t *p, *end;
 
   for (p = w->chrs, end = p + w->length;
-       p < end && !isalnum(*(unsigned char *)p);
+       p < end && !iswalnum(*p);
        ++p);
-  return p < end && !islower(*(unsigned char *)p);
+  return p < end && !iswlower(*p);
 }
 
 
@@ -77,19 +103,19 @@ static int checkcurious(word *w, const c
 /* Returns 1 if *w is curious according to */
 /* the definition in par.doc, or 0 if not. */
 {
-  const char *start, *p;
-  char ch;
+  const wchar_t *start, *p;
+  wchar_t ch;
 
   for (start = w->chrs, p = start + w->length;  p > start;  --p) {
     ch = p[-1];
-    if (isalnum(*(unsigned char *)&ch)) return 0;
+    if (iswalnum(*(wchar_t *)&ch)) return 0;
     if (csmember(ch,terminalchars)) break;
   }
 
   if (p <= start + 1) return 0;
 
   --p;
-  do if (isalnum(*(unsigned char *)--p)) return 1;
+  do if (iswalnum(*(wchar_t *)--p)) return 1;
   while (p > start);
 
   return 0;
@@ -97,31 +123,32 @@ static int checkcurious(word *w, const c
 
 
 static int simplebreaks(word *head, word *tail, int L, int last)
-
-/* Chooses line breaks in a list of words which maximize the length of the   */
-/* shortest line.  L is the maximum line length.  The last line counts as a  */
-/* line only if last is non-zero. _head must point to a dummy word, and tail */
-/* must point to the last word, whose next field must be NULL.  Returns the  */
-/* length of the shortest line on success, -1 if there is a word of length   */
-/* greater than L, or L if there are no lines.                               */
+/* Chooses line  breaks in a  list of words  which maximize */
+/* the length of  the shortest line. L is  the maximum line */
+/* length. The last  line counts as a line only  if last is */
+/* non-zero. _head  must point  to a  dummy word,  and tail */
+/* must point  to the last  word, whose next field  must be */
+/* NULL.  Returns  the  length  of  the  shortest  line  on */
+/* success, -1 if there is a word of length greater than L, */
+/* or L if there are no lines.                              */
 {
   word *w1, *w2;
   int linelen, score;
 
   if (!head->next) return L;
 
-  for (w1 = tail, linelen = w1->length;
+  for (w1 = tail, linelen = w1->width;
        w1 != head && linelen <= L;
-       linelen += isshifted(w1), w1 = w1->prev, linelen += 1 + w1->length) {
+       linelen += isshifted(w1), w1 = w1->prev, linelen += 1 + w1->width) {
     w1->score = last ? linelen : L;
     w1->nextline = NULL;
   }
 
   for ( ;  w1 != head;  w1 = w1->prev) {
     w1->score = -1;
-    for (linelen = w1->length,  w2 = w1->next;
+    for (linelen = w1->width,  w2 = w1->next;
          linelen <= L;
-         linelen += 1 + isshifted(w2) + w2->length,  w2 = w2->next) {
+         linelen += 1 + isshifted(w2) + w2->width,  w2 = w2->next) {
       score = w2->score;
       if (linelen < score) score = linelen;
       if (score >= w1->score) {
@@ -170,7 +197,7 @@ static void normalbreaks(
 
   shortest = simplebreaks(head,tail,target,last);
   if (shortest < 0) {
-    sprintf(errmsg,impossibility,1);
+    swprintf(errmsg,errmsg_size,impossibility,1);
     return;
   }
 
@@ -180,9 +207,9 @@ static void normalbreaks(
   w1 = tail;
   do {
     w1->score = -1;
-    for (linelen = w1->length,  w2 = w1->next;
+    for (linelen = w1->width,  w2 = w1->next;
          linelen <= target;
-         linelen += 1 + isshifted(w2) + w2->length,  w2 = w2->next) {
+         linelen += 1 + isshifted(w2) + w2->width,  w2 = w2->next) {
       extra = target - linelen;
       minlen = shortest;
       if (w2)
@@ -204,7 +231,7 @@ static void normalbreaks(
   } while (w1 != head);
 
   if (head->next->score < 0)
-    sprintf(errmsg,impossibility,2);
+    swprintf(errmsg,errmsg_size,impossibility,2);
 }
 
 
@@ -227,9 +254,9 @@ static void justbreaks(
   w1 = tail;
   do {
     w1->score = L;
-    for (numgaps = 0, extra = L - w1->length, w2 = w1->next;
+    for (numgaps = 0, extra = L - w1->width, w2 = w1->next;
          extra >= 0;
-         ++numgaps, extra -= 1 + isshifted(w2) + w2->length, w2 = w2->next) {
+         ++numgaps, extra -= 1 + isshifted(w2) + w2->width, w2 = w2->next) {
       gap = numgaps ? (extra + numgaps - 1) / numgaps : L;
       if (w2)
         score = w2->score;
@@ -249,7 +276,7 @@ static void justbreaks(
 
   maxgap = head->next->score;
   if (maxgap >= L) {
-    strcpy(errmsg, "Cannot justify.\n");
+    wcscpy(errmsg, L"Cannot justify.\n");
     return;
   }
 
@@ -259,9 +286,9 @@ static void justbreaks(
   w1 = tail;
   do {
     w1->score = -1;
-    for (numgaps = 0, extra = L - w1->length, w2 = w1->next;
+    for (numgaps = 0, extra = L - w1->width, w2 = w1->next;
          extra >= 0;
-         ++numgaps, extra -= 1 + isshifted(w2) + w2->length, w2 = w2->next) {
+         ++numgaps, extra -= 1 + isshifted(w2) + w2->width, w2 = w2->next) {
       gap = numgaps ? (extra + numgaps - 1) / numgaps : L;
       if (w2)
         score = w2->score;
@@ -290,20 +317,20 @@ static void justbreaks(
   } while (w1 != head);
 
   if (head->next->score < 0)
-    sprintf(errmsg,impossibility,3);
+    swprintf(errmsg,errmsg_size,impossibility,3);
 }
 
 
-char **reformat(
-  const char * const *inlines, const char * const *endline, int afp, int fs,
+wchar_t **reformat(
+  const wchar_t * const *inlines, const wchar_t * const *endline, int afp, int fs,
   int hang, int prefix, int suffix, int width, int cap, int fit, int guess,
   int just, int last, int Report, int touch, const charset *terminalchars,
   errmsg_t errmsg
 )
 {
   int numin, affix, L, onfirstword = 1, linelen, numout, numgaps, extra, phase;
-  const char * const *line, **suffixes = NULL, **suf, *end, *p1, *p2;
-  char *q1, *q2, **outlines = NULL;
+  const wchar_t * const *line, **suffixes = NULL, **suf, *end, *p1, *p2;
+  wchar_t *q1, *q2, **outlines = NULL;
   word dummy, *head, *tail, *w1, *w2;
   buffer *pbuf = NULL;
 
@@ -315,16 +342,16 @@ char **reformat(
   head = tail = &dummy;
   numin = endline - inlines;
   if (numin <= 0) {
-    sprintf(errmsg,impossibility,4);
+    swprintf(errmsg,errmsg_size,impossibility,4);
     goto rfcleanup;
   }
   numgaps = extra = 0;  /* unnecessary, but quiets compiler warnings */
 
 /* Allocate space for pointers to the suffixes: */
 
-  suffixes = malloc(numin * sizeof (const char *));
+  suffixes = malloc(numin * sizeof (const wchar_t *));
   if (!suffixes) {
-    strcpy(errmsg,outofmem);
+    wcscpy(errmsg,outofmem);
     goto rfcleanup;
   }
 
@@ -337,8 +364,8 @@ char **reformat(
   do {
     for (end = *line;  *end;  ++end);
     if (end - *line < affix) {
-      sprintf(errmsg,
-              "Line %ld shorter than <prefix> + <suffix> = %d + %d = %d\n",
+      swprintf(errmsg,errmsg_size,
+              L"Line %d shorter than <prefix> + <suffix> = %d + %d = %d\n",
               (long)(line - inlines + 1), prefix, suffix, affix);
       goto rfcleanup;
     }
@@ -346,17 +373,17 @@ char **reformat(
     *suf = end;
     p1 = *line + prefix;
     for (;;) {
-      while (p1 < end && *p1 == ' ') ++p1;
+      while (p1 < end && *p1 == L' ') ++p1;
       if (p1 == end) break;
       p2 = p1;
       if (onfirstword) {
         p1 = *line + prefix;
         onfirstword = 0;
       }
-      while (p2 < end && *p2 != ' ') ++p2;
+      while (p2 < end && *p2 != L' ') ++p2;
       w1 = malloc(sizeof (word));
       if (!w1) {
-        strcpy(errmsg,outofmem);
+        wcscpy(errmsg,outofmem);
         goto rfcleanup;
       }
       w1->next = NULL;
@@ -364,6 +391,7 @@ char **reformat(
       tail = tail->next = w1;
       w1->chrs = p1;
       w1->length = p2 - p1;
+      w1->width = getWidth(p1, p2);
       w1->flags = 0;
       p1 = p2;
     }
@@ -380,6 +408,7 @@ char **reformat(
         if (iscurious(w1)) {
           if (w1->chrs[w1->length] && w1->chrs + w1->length + 1 == w2->chrs) {
             w2->length += w1->length + 1;
+            w2->width += w1->width + 1;
             w2->chrs = w1->chrs;
             w2->prev = w1->prev;
             w2->prev->next = w2;
@@ -400,20 +429,20 @@ char **reformat(
 
   if (Report)
     for (w2 = head->next;  w2;  w2 = w2->next) {
-      if (w2->length > L) {
-        linelen = w2->length;
+      if (w2->width > L) {
+        linelen = w2->width;
         if (linelen > errmsg_size - 17)
           linelen = errmsg_size - 17;
-        sprintf(errmsg, "Word too long: %.*s\n", linelen, w2->chrs);
+        swprintf(errmsg,errmsg_size, L"Word too long: %.*ls\n", linelen, w2->chrs);
         goto rfcleanup;
       }
     }
   else
     for (w2 = head->next;  w2;  w2 = w2->next)
-      while (w2->length > L) {
+      while (w2->width > L) {
         w1 = malloc(sizeof (word));
         if (!w1) {
-          strcpy(errmsg,outofmem);
+          wcscpy(errmsg,outofmem);
           goto rfcleanup;
         }
         w1->next = w2;
@@ -423,7 +452,9 @@ char **reformat(
         w1->chrs = w2->chrs;
         w2->chrs += L;
         w1->length = L;
+        w1->width = getWidth(w1->chrs, w1->chrs + L);
         w2->length -= L;
+        w2->width -= w1->width;
         w1->flags = 0;
         if (iscapital(w2)) {
           w1->flags |= W_CAPITAL;
@@ -447,9 +478,9 @@ char **reformat(
     L = 0;
     w1 = head->next;
     while (w1) {
-      for (linelen = w1->length, w2 = w1->next;
+      for (linelen = w1->width, w2 = w1->next;
            w2 != w1->nextline;
-           linelen += 1 + isshifted(w2) + w2->length, w2 = w2->next);
+           linelen += 1 + isshifted(w2) + w2->width, w2 = w2->next);
       if (linelen > L) L = linelen;
       w1 = w2;
     }
@@ -457,67 +488,67 @@ char **reformat(
 
 /* Construct the lines: */
 
-  pbuf = newbuffer(sizeof (char *), errmsg);
+  pbuf = newbuffer(sizeof (wchar_t *), errmsg);
   if (*errmsg) goto rfcleanup;
 
   numout = 0;
   w1 = head->next;
   while (numout < hang || w1) {
     if (w1)
-      for (w2 = w1->next, numgaps = 0, extra = L - w1->length;
+      for (w2 = w1->next, numgaps = 0, extra = L - w1->width;
            w2 != w1->nextline;
-           ++numgaps, extra -= 1 + isshifted(w2) + w2->length, w2 = w2->next);
+           ++numgaps, extra -= 1 + isshifted(w2) + w2->width, w2 = w2->next);
     linelen = suffix || (just && (w2 || last)) ?
                 L + affix :
                 w1 ? prefix + L - extra : prefix;
-    q1 = malloc((linelen + 1) * sizeof (char));
+    q1 = malloc((linelen + 1) * sizeof (wchar_t));
     if (!q1) {
-      strcpy(errmsg,outofmem);
+      wcscpy(errmsg,outofmem);
       goto rfcleanup;
     }
     additem(pbuf, &q1, errmsg);
     if (*errmsg) goto rfcleanup;
     ++numout;
     q2 = q1 + prefix;
-    if      (numout <= numin) memcpy(q1, inlines[numout - 1], prefix);
-    else if (numin  >  hang ) memcpy(q1, endline[-1],         prefix);
+    if      (numout <= numin) memcpy(q1, inlines[numout - 1], prefix * sizeof(wchar_t));
+    else if (numin  >  hang ) memcpy(q1, endline[-1],         prefix * sizeof(wchar_t));
     else {
       if (afp > prefix) afp = prefix;
-      memcpy(q1, endline[-1], afp);
+      memcpy(q1, endline[-1], afp * sizeof(wchar_t));
       q1 += afp;
-      while (q1 < q2) *q1++ = ' ';
+      while (q1 < q2) *q1++ = L' ';
     }
     q1 = q2;
     if (w1) {
       phase = numgaps / 2;
       for (w2 = w1;  ;  ) {
-        memcpy(q1, w2->chrs, w2->length);
+        memcpy(q1, w2->chrs, w2->length * sizeof(wchar_t));
         q1 += w2->length;
         w2 = w2->next;
         if (w2 == w1->nextline) break;
-        *q1++ = ' ';
+        *q1++ = L' ';
         if (just && (w1->nextline || last)) {
           phase += extra;
           while (phase >= numgaps) {
-            *q1++ = ' ';
+            *q1++ = L' ';
             phase -= numgaps;
           }
         }
-        if (isshifted(w2)) *q1++ = ' ';
+        if (isshifted(w2)) *q1++ = L' ';
       }
     }
     q2 += linelen - affix;
-    while (q1 < q2) *q1++ = ' ';
+    while (q1 < q2) *q1++ = L' ';
     q2 = q1 + suffix;
-    if      (numout <= numin) memcpy(q1, suffixes[numout - 1], suffix);
-    else if (numin  >  hang ) memcpy(q1, suffixes[numin  - 1], suffix);
+    if      (numout <= numin) memcpy(q1, suffixes[numout - 1], suffix * sizeof(wchar_t));
+    else if (numin  >  hang ) memcpy(q1, suffixes[numin  - 1], suffix * sizeof(wchar_t));
     else {
       if (fs > suffix) fs = suffix;
-      memcpy(q1, suffixes[numin - 1], fs);
+      memcpy(q1, suffixes[numin - 1], fs * sizeof(wchar_t));
       q1 += fs;
-      while(q1 < q2) *q1++ = ' ';
+      while(q1 < q2) *q1++ = L' ';
     }
-    *q2 = '\0';
+    *q2 = L'\0';
     if (w1) w1 = w1->nextline;
   }
 
@@ -546,5 +577,6 @@ rfcleanup:
     freebuffer(pbuf);
   }
 
+
   return outlines;
 }
--- a/reformat.h
+++ b/reformat.h
@@ -3,6 +3,7 @@ reformat.h
 last touched in Par 1.53.0
 last meaningful change in Par 1.53.0
 Copyright 1993, 2020 Adam M. Costello
+Modified by Jérôme Pouiller
 
 This is ANSI C code (C89).
 
@@ -11,10 +12,11 @@ This is ANSI C code (C89).
 
 #include "charset.h"
 #include "errmsg.h"
+#include <wchar.h>
 
 
-char **reformat(
-  const char * const *inlines, const char * const *endline, int afp, int fs,
+wchar_t **reformat(
+  const wchar_t * const *inlines, const wchar_t * const *endline, int afp, int fs,
   int hang, int prefix, int suffix, int width, int cap, int fit, int guess,
   int just, int last, int Report, int touch, const charset *terminalchars,
   errmsg_t errmsg
--- a/releasenotes
+++ b/releasenotes
@@ -2,10 +2,26 @@ releasenotes
 last touched in Par 1.53.0
 last meaningful change in Par 1.53.0
 Copyright 1993, 1996, 2000, 2001, 2020 Adam M. Costello
+Modified by Jérôme Pouiller
 
 
 Each entry below describes changes since the previous version.
 
+Par 1.52-i18n.4 released 2009-May-05
+    Change nearly all char in wchar_t remove nightmare of unsigned char vs signed char
+    Fix bugs with option 'q'
+    Fix bugs with '\n'
+
+Par 1.52-i18n.3 released 2006-Oct-03
+    Fix bug with option 'g'
+
+Par 1.52-i18n.2 released 2006-Aug-03
+    Fix bug debian #310495.
+
+Par 1.52-i18n.1 released 2006-Jun-22
+    Changed char in wchar_t. Allow support of multibytes characters.
+    Added support for double-width characters.
+
 Par 1.53.0 released 2020-Mar-14
     Fixed the following bugs:
         An unintended bad interaction between <quote> and <repeat>.