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-rw-r--r--pym/portage_versions.py8
1 files changed, 5 insertions, 3 deletions
diff --git a/pym/portage_versions.py b/pym/portage_versions.py
index 63d69bac4..7ed7712d2 100644
--- a/pym/portage_versions.py
+++ b/pym/portage_versions.py
@@ -123,12 +123,13 @@ def vercmp(ver1, ver2, silent=1):
list2 = match2.group(6).split("_")[1:]
for i in range(0, max(len(list1), len(list2))):
+ # Implicit _p0 is given a value of -1, so that 1 < 1_p0
if len(list1) <= i:
- s1 = ("p","0")
+ s1 = ("p","-1")
else:
s1 = suffix_regexp.match(list1[i]).groups()
if len(list2) <= i:
- s2 = ("p","0")
+ s2 = ("p","-1")
else:
s2 = suffix_regexp.match(list2[i]).groups()
if s1[0] != s2[0]:
@@ -140,7 +141,8 @@ def vercmp(ver1, ver2, silent=1):
except ValueError: r1 = 0
try: r2 = int(s2[1])
except ValueError: r2 = 0
- return r1 - r2
+ if r1 - r2:
+ return r1 - r2
# the suffix part is equal to, so finally check the revision
if match1.group(10):