1 files changed, 55 insertions, 27 deletions

diff --git a/lib/unilbrk/u8-width-linebreaks.c b/lib/unilbrk/u8-width-linebreaks.c
index 19ab9ba2..34d949bb 100644
--- a/lib/unilbrk/u8-width-linebreaks.c
+++ b/lib/unilbrk/u8-width-linebreaks.c
@@ -1,49 +1,50 @@
 /* Line breaking of UTF-8 strings.
-   Copyright (C) 2001-2003, 2006-2018 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
-   This program is free software: you can redistribute it and/or
-   modify it under the terms of either:
-
-     * the GNU Lesser General Public License as published by the Free
-       Software Foundation; either version 3 of the License, or (at your
-       option) any later version.
-
-   or
-
-     * the GNU General Public License as published by the Free
-       Software Foundation; either version 2 of the License, or (at your
-       option) any later version.
-
-   or both in parallel, as here.
-   This program is distributed in the hope that it will be useful,
+   This file is free software.
+   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
+   You can redistribute it and/or modify it under either
+     - the terms of the GNU Lesser General Public License as published
+       by the Free Software Foundation; either version 3, or (at your
+       option) any later version, or
+     - the terms of the GNU General Public License as published by the
+       Free Software Foundation; either version 2, or (at your option)
+       any later version, or
+     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
+   Lesser General Public License and the GNU General Public License
+   for more details.
 
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public
+   License and of the GNU General Public License along with this
+   program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
 /* Specification.  */
 #include "unilbrk.h"
+#include "unilbrk/internal.h"
 
+#include "unilbrk/lbrktables.h"
 #include "unistr.h"
 #include "uniwidth.h"
 
 int
-u8_width_linebreaks (const uint8_t *s, size_t n,
-                     int width, int start_column, int at_end_columns,
-                     const char *o, const char *encoding,
-                     char *p)
+u8_width_linebreaks_internal (const uint8_t *s, size_t n,
+                              int width, int start_column, int at_end_columns,
+                              const char *o, const char *encoding, int cr,
+                              char *p)
 {
   const uint8_t *s_end;
   char *last_p;
   int last_column;
   int piece_width;
 
-  u8_possible_linebreaks (s, n, encoding, p);
+  u8_possible_linebreaks_loop (s, n, encoding, cr, p);
 
   s_end = s + n;
   last_p = NULL;
@@ -58,7 +59,8 @@ u8_width_linebreaks (const uint8_t *s, size_t n,
       if (o != NULL && *o != UC_BREAK_UNDEFINED)
         *p = *o;
 
-      if (*p == UC_BREAK_POSSIBLE || *p == UC_BREAK_MANDATORY)
+      if (*p == UC_BREAK_POSSIBLE
+          || *p == UC_BREAK_MANDATORY || *p == UC_BREAK_CR_BEFORE_LF)
         {
           /* An atomic piece of text ends here.  */
           if (last_p != NULL && last_column + piece_width > width)
@@ -69,7 +71,7 @@ u8_width_linebreaks (const uint8_t *s, size_t n,
             }
         }
 
-      if (*p == UC_BREAK_MANDATORY)
+      if (*p == UC_BREAK_MANDATORY || *p == UC_BREAK_CR_BEFORE_LF)
         {
           /* uc is a line break character.  */
           /* Start a new piece at column 0.  */
@@ -116,6 +118,30 @@ u8_width_linebreaks (const uint8_t *s, size_t n,
   return last_column + piece_width;
 }
 
+#undef u8_width_linebreaks
+
+int
+u8_width_linebreaks (const uint8_t *s, size_t n,
+                     int width, int start_column, int at_end_columns,
+                     const char *o, const char *encoding,
+                     char *p)
+{
+  return u8_width_linebreaks_internal (s, n,
+                                       width, start_column, at_end_columns,
+                                       o, encoding, -1, p);
+}
+
+int
+u8_width_linebreaks_v2 (const uint8_t *s, size_t n,
+                        int width, int start_column, int at_end_columns,
+                        const char *o, const char *encoding,
+                        char *p)
+{
+  return u8_width_linebreaks_internal (s, n,
+                                       width, start_column, at_end_columns,
+                                       o, encoding, LBP_CR, p);
+}
+
 
 #ifdef TEST
 
@@ -183,7 +209,7 @@ main (int argc, char * argv[])
       char *breaks = malloc (length);
       int i;
 
-      u8_width_linebreaks ((uint8_t *) input, length, width, 0, 0, NULL, "UTF-8", breaks);
+      u8_width_linebreaks_v2 ((uint8_t *) input, length, width, 0, 0, NULL, "UTF-8", breaks);
 
       for (i = 0; i < length; i++)
         {
@@ -194,6 +220,8 @@ main (int argc, char * argv[])
               break;
             case UC_BREAK_MANDATORY:
               break;
+            case UC_BREAK_CR_BEFORE_LF:
+              break;
             case UC_BREAK_PROHIBITED:
               break;
             default: