Fix handling tag on excluded commits and even if there is no message for this version

gitdch

@@ -248,14 +248,18 @@ def clean_deb_version(version_name):
 
 def add_version():
     """ Add version info """
-    if messages:
-        log.info('Add version %s:\n  - %s', version, '\n  - '.join(messages))
-        versions.append({
-            'name': version,
-            'tag': tag,
-            'commit': version_commit,
-            'messages': messages,
-        })
+    global messages  # pylint: disable=global-statement
+    if not version_commit:
+        return
+    if not messages:
+        messages = ['Release version {0}'.format(version)]
+    log.info('Add version %s:\n  - %s', version, '\n  - '.join(messages))
+    versions.append({
+        'name': version,
+        'tag': tag,
+        'commit': version_commit,
+        'messages': messages
+    })
 
 
 tag = None
@@ -268,18 +272,7 @@ version = (
 )
 messages = []
 for commit in repo.iter_commits(rev=options.revision):
-    if version_commit is None:
-        version_commit = commit
     log.debug('Commit %s (%s)', commit, commit.summary)
-    excluded = False
-    for regex in options.exclude:
-        if regex.search(commit.summary):
-            excluded = True
-            log.debug(
-                'Exclude commit %s ("%s", match with "%s")',
-                commit, commit.summary, regex.pattern)
-    if excluded:
-        continue
     if commit.binsha in tag_commits:
         new_tag = tag_commits[commit.binsha]
         log.debug('Reach new tag %s', new_tag)
@@ -291,7 +284,17 @@ for commit in repo.iter_commits(rev=options.revision):
         version_commit = commit
         messages = []
         log.debug('Iter commits for version %s', version)
-    messages.append(commit.summary)
+    if version_commit is None:
+        version_commit = commit
+    excluded = False
+    for regex in options.exclude:
+        if regex.search(commit.summary):
+            excluded = True
+            log.debug(
+                'Exclude commit %s ("%s", match with "%s")',
+                commit, commit.summary, regex.pattern)
+    if not excluded:
+        messages.append(commit.summary)
 add_version()
 log.info('%d versions found', len(versions))