build: fix our adjustments for gnulib files in lib.

[bison.git] / build-aux / update-b4-copyright

diff --git a/build-aux/update-b4-copyright b/build-aux/update-b4-copyright
index af43407d71c7ee584122cce8e102ac355cae3f51..63a333593301d19384099c54cd15745abe15892d 100755 (executable)
--- a/build-aux/update-b4-copyright
+++ b/build-aux/update-b4-copyright
@@ -3,8 +3,8 @@
 # Update b4_copyright invocations or b4_copyright_years definitions to
 # include the current year.
 
-# Copyright (C) 2009 Free Software Foundation, Inc.
-#
+# Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 3, or (at your option)
@@ -42,7 +42,7 @@ my $old_re = <<'EOF'
   (?:
     ,\s*
     (
-      \[\s* (?:\d{4}(,\s*|-))* (\d{4}) \s*]
+      \[\s* (?:\d{4}(?:,\s*|-))* (\d{4}) \s*]
     )
   )?
   \)
@@ -54,8 +54,7 @@ while (/($old_re)/gx)
     my $start = pos() - length ($1);
     my $b4_copyright_line = $2;
     my $year_lines = $3;
-    my $sep = $4 ? $4 : "";
-    my $final_year = $5;
+    my $final_year = $4;
     $year_lines .= ')';
 
     # If there was a second argument, it contains years, so update them.
@@ -65,18 +64,7 @@ while (/($old_re)/gx)
         if ($final_year != $this_year)
           {
             # Update the year.
-            if ($sep eq '-' && $final_year + 1 == $this_year)
-              {
-                $year_lines =~ s/$final_year/$this_year/;
-              }
-            elsif ($sep ne '-' && $final_year + 1 == $this_year)
-              {
-                $year_lines =~ s/$final_year/$final_year-$this_year/;
-              }
-            else
-              {
-                $year_lines =~ s/$final_year/$final_year, $this_year/;
-              }
+            $year_lines =~ s/$final_year/$final_year, $this_year/;
           }
 
         # Normalize all whitespace.
@@ -85,6 +73,11 @@ while (/($old_re)/gx)
         # Put spaces after commas.
         $year_lines =~ s/, ?/, /g;
 
+        # Do not compress to intervals; for example, do not replace
+        # "2008, 2009, 2010" with "2008-2010".  See the Copyright
+        # Notices section in Information for Maintainers of GNU Software, at:
+        # http://www.gnu.org/prep/maintain/maintain.html#Copyright-Notices
+
         # Format within margin.
         my $year_lines_new;
         my $indent = index ($b4_copyright_line, '[');