Preserve proper a year range in copyright statements.

Files that were created in the past year will have the new year
appended to the first year number.

Ex: `2017` will be updated to `2017-2018`

Author: eschwab

VersionManager.py

@@ -96,7 +96,7 @@
                    "Makefile.am",
                    "install.sh",
                    "debian/copyright",
-                   "debian/copyright",
+                   "debian/manpage.xml",
                    "doc/Command_Index_User.tex",
                    "doc/Makefile.am",
                    "doc/GregorioRef.tex",
@@ -327,7 +327,7 @@ def replace_version(version_obj):
                 result.append(newline)
             else:
                 result.append(line)
-    with open('CHANGELOG.md','w') as outfile:
+    with open('CHANGELOG.md', 'w') as outfile:
         outfile.write(''.join(result))
     sys.exit(0)
 
@@ -428,20 +428,26 @@ def do_release(version_obj, not_interactive):
 def copyright_year():
     "Check and update copyright year as needed"
     fileyear = linecache.getline(VERSION_FILE, 2).strip()
+    def year_range(matchobj):
+        "Check and add a year range to the copyright"
+        if matchobj.group(1) is not None:
+            return re.sub(fileyear, CURRENTYEAR, matchobj.group(0))
+        return re.sub(fileyear, fileyear+'-'+CURRENTYEAR, matchobj.group(0))
+
     if int(fileyear) != int(CURRENTYEAR):
         print('Updating copyright year.')
         for myfile in COPYRIGHT_FILES:
             result = []
             with open(myfile, 'r') as infile:
                 for line in infile:
                     if re.search(r'[C|c]opyright.*Gregorio Project', line):
-                        result.append(re.sub(fileyear, CURRENTYEAR, line))
+                        result.append(re.sub(r'(\d{4}-)?(\d{4})', year_range, line))
                     elif re.search(r'[C|c]opyright.*Elie Roux', line):
-                        result.append(re.sub(fileyear, CURRENTYEAR, line))
+                        result.append(re.sub(r'(\d{4}-)?(\d{4})', year_range, line))
                     elif re.search(r'[C|c]opyright.*Richard Chonak', line):
-                        result.append(re.sub(fileyear, CURRENTYEAR, line))
+                        result.append(re.sub(r'(\d{4}-)?(\d{4})', year_range, line))
                     elif re.search(r'[C|c]opyright.*Jakub Jelinek', line):
-                        result.append(re.sub(fileyear, CURRENTYEAR, line))
+                        result.append(re.sub(r'(\d{4}-)?(\d{4})', year_range, line))
                     else:
                         result.append(line)
             with open(myfile, 'w') as outfile:

debian/manpage.xml

@@ -53,7 +53,7 @@ and docbook-xsl in your Build-Depends control field.
       &dhsurname;
     </author>
     <copyright>
-      <year>2007</year>
+      <year>2007-2018</year> <!--Copyright Elie Roux-->
       <holder>&dhusername;</holder>
     </copyright>
     &dhdate;

fonts/greextra.sfd

@@ -3,7 +3,7 @@ FontName: greextra
 FullName: greextra
 FamilyName: greextra
 Weight: Extra-Light
-Copyright: greciliae font, adapted with fontforge by Elie Roux\nCopyright (C) 2007 Matthew Spencer\nwith Reserved Font Name Caeciliae\n\nThis Font Software is licensed under the SIL Open Font License, Version 1.1.\n\nThis license is available with a FAQ at: http://scripts.sil.org/OFL
+Copyright: greextra font, adapted with fontforge by Elie Roux\nCopyright (C) 2007-2018 Matthew Spencer\nwith Reserved Font Name Caeciliae\n\nThis Font Software is licensed under the SIL Open Font License, Version 1.1.\n\nThis license is available with a FAQ at: http://scripts.sil.org/OFL
 Version: 1.0
 ItalicAngle: 0
 UnderlinePosition: -204