Make sure we have the last tag for the interval of commits

We use 'git describe' for that task. The '--tags' option
will look in all the tags, as well the ones not
annotated. '--abbrev=0' suppresses the abbreviated
object name.

1 files changed, 6 insertions, 13 deletions

diff --git a/release b/release
index b478b67..7bf77eb 100755
--- a/release
+++ b/release
@@ -36,20 +36,13 @@ class ReleaseReport(object):
         self.testcases = []
 
     def generate(self):
-        p = subprocess.Popen(['git', 'tag'], stdout=subprocess.PIPE)
-        tags = p.stdout.read().split('\n')
-        tags = [ tag for tag in tags if tag.startswith('v') ]
-
+        p = subprocess.Popen(['git', 'describe', '--tags', '--abbrev=0'],
+                             stdout=subprocess.PIPE)
+        last_tag = p.stdout.read().strip('\n')
         release_tag = 'v' + self.version
-        try:
-            i = tags.index(release_tag)
-        except ValueError:
-            print 'The tag you provided does not exist.'
-            return
-
-        if i > 0:
-            previous = tags[i - 1]
-            interval = previous + '..' + release_tag
+
+        if last_tag:
+            interval = last_tag + '..' + release_tag
         else:
             interval = release_tag