Prevent type exception on concatenation if diffstat returns None.
This will most often occur if diffstat is not installed in the
target platform, though may also happen in other cases where
diffstat fails to execute.
Signed-off-by: Sean Dague <sean@dague.net>
--------------
test L:up a R:nc a b W: - 1 get local a to b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local e300d1c794ec+ remote 735846fee2d7
rev: versions differ -> m
a: remote copied to b -> m
merging a and b
my a@e300d1c794ec+ other b@735846fee2d7 ancestor a@924404dff337
copying a to b
merging rev
my rev@e300d1c794ec+ other rev@735846fee2d7 ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M a
M b
a
--------------
--------------
test L:nc a b R:up a W: - 2 get rem change to a and b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ac809aeed39a+ remote f4db7e329e71
a: remote is newer -> g
b: local copied to a -> m
rev: versions differ -> m
getting a
merging b and a
my b@ac809aeed39a+ other a@f4db7e329e71 ancestor a@924404dff337
merging rev
my rev@ac809aeed39a+ other rev@f4db7e329e71 ancestor rev@924404dff337
1 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M a
M b
a
--------------
--------------
test L:up a R:nm a b W: - 3 get local a change to b, remove a
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local e300d1c794ec+ remote e03727d2d66b
rev: versions differ -> m
a: remote moved to b -> m
merging a and b
my a@e300d1c794ec+ other b@e03727d2d66b ancestor a@924404dff337
copying a to b
removing a
merging rev
my rev@e300d1c794ec+ other rev@e03727d2d66b ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
a
--------------
--------------
test L:nm a b R:up a W: - 4 get remote change to b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ecf3cb2a4219+ remote f4db7e329e71
b: local moved to a -> m
rev: versions differ -> m
merging b and a
my b@ecf3cb2a4219+ other a@f4db7e329e71 ancestor a@924404dff337
merging rev
my rev@ecf3cb2a4219+ other rev@f4db7e329e71 ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
a
--------------
--------------
test L: R:nc a b W: - 5 get b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local 94b33a1b7f2d+ remote 735846fee2d7
rev: versions differ -> m
b: remote created -> g
getting b
merging rev
my rev@94b33a1b7f2d+ other rev@735846fee2d7 ancestor rev@924404dff337
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
C a
--------------
--------------
test L:nc a b R: W: - 6 nothing
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ac809aeed39a+ remote 97c705ade336
rev: versions differ -> m
merging rev
my rev@ac809aeed39a+ other rev@97c705ade336 ancestor rev@924404dff337
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
C a
C b
--------------
--------------
test L: R:nm a b W: - 7 get b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local 94b33a1b7f2d+ remote e03727d2d66b
a: other deleted -> r
rev: versions differ -> m
b: remote created -> g
removing a
getting b
merging rev
my rev@94b33a1b7f2d+ other rev@e03727d2d66b ancestor rev@924404dff337
1 files updated, 1 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
--------------
--------------
test L:nm a b R: W: - 8 nothing
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ecf3cb2a4219+ remote 97c705ade336
rev: versions differ -> m
merging rev
my rev@ecf3cb2a4219+ other rev@97c705ade336 ancestor rev@924404dff337
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
C b
--------------
--------------
test L:um a b R:um a b W: - 9 do merge with ancestor in a
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ec03c2ca8642+ remote 79cc6877a3b7
b: versions differ -> m
rev: versions differ -> m
merging b
my b@ec03c2ca8642+ other b@79cc6877a3b7 ancestor a@924404dff337
merging rev
my rev@ec03c2ca8642+ other rev@79cc6877a3b7 ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
--------------
--------------
test L:nm a b R:nm a c W: - 11 get c, keep b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ecf3cb2a4219+ remote e6abcc1a30c2
rev: versions differ -> m
c: remote created -> g
getting c
merging rev
my rev@ecf3cb2a4219+ other rev@e6abcc1a30c2 ancestor rev@924404dff337
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M c
C b
--------------
--------------
test L:nc a b R:up b W: - 12 merge b no ancestor
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ac809aeed39a+ remote af30c7647fc7
b: versions differ -> m
rev: versions differ -> m
merging b
my b@ac809aeed39a+ other b@af30c7647fc7 ancestor b@000000000000
merging rev
my rev@ac809aeed39a+ other rev@af30c7647fc7 ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
C a
--------------
--------------
test L:up b R:nm a b W: - 13 merge b no ancestor
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local 59318016310c+ remote e03727d2d66b
a: other deleted -> r
b: versions differ -> m
rev: versions differ -> m
removing a
merging b
my b@59318016310c+ other b@e03727d2d66b ancestor b@000000000000
merging rev
my rev@59318016310c+ other rev@e03727d2d66b ancestor rev@924404dff337
0 files updated, 2 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
--------------
--------------
test L:nc a b R:up a b W: - 14 merge b no ancestor
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ac809aeed39a+ remote 8dbce441892a
a: remote is newer -> g
b: versions differ -> m
rev: versions differ -> m
getting a
merging b
my b@ac809aeed39a+ other b@8dbce441892a ancestor b@000000000000
merging rev
my rev@ac809aeed39a+ other rev@8dbce441892a ancestor rev@924404dff337
1 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M a
M b
--------------
--------------
test L:up b R:nm a b W: - 15 merge b no ancestor, remove a
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local 59318016310c+ remote e03727d2d66b
a: other deleted -> r
b: versions differ -> m
rev: versions differ -> m
removing a
merging b
my b@59318016310c+ other b@e03727d2d66b ancestor b@000000000000
merging rev
my rev@59318016310c+ other rev@e03727d2d66b ancestor rev@924404dff337
0 files updated, 2 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
--------------
--------------
test L:nc a b R:up a b W: - 16 get a, merge b no ancestor
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ac809aeed39a+ remote 8dbce441892a
a: remote is newer -> g
b: versions differ -> m
rev: versions differ -> m
getting a
merging b
my b@ac809aeed39a+ other b@8dbce441892a ancestor b@000000000000
merging rev
my rev@ac809aeed39a+ other rev@8dbce441892a ancestor rev@924404dff337
1 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M a
M b
--------------
--------------
test L:up a b R:nc a b W: - 17 keep a, merge b no ancestor
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local 0b76e65c8289+ remote 735846fee2d7
b: versions differ -> m
rev: versions differ -> m
merging b
my b@0b76e65c8289+ other b@735846fee2d7 ancestor b@000000000000
merging rev
my rev@0b76e65c8289+ other rev@735846fee2d7 ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
C a
--------------
--------------
test L:nm a b R:up a b W: - 18 merge b no ancestor
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ecf3cb2a4219+ remote 8dbce441892a
b: versions differ -> m
rev: versions differ -> m
a: prompt recreating -> g
getting a
merging b
my b@ecf3cb2a4219+ other b@8dbce441892a ancestor b@000000000000
merging rev
my rev@ecf3cb2a4219+ other rev@8dbce441892a ancestor rev@924404dff337
1 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M a
M b
--------------
--------------
test L:up a b R:nm a b W: - 19 merge b no ancestor, prompt remove a
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local 0b76e65c8289+ remote e03727d2d66b
b: versions differ -> m
rev: versions differ -> m
merging b
my b@0b76e65c8289+ other b@e03727d2d66b ancestor b@000000000000
merging rev
my rev@0b76e65c8289+ other rev@e03727d2d66b ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
C a
--------------
--------------
test L:up a R:um a b W: - 20 merge a and b to b, remove a
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local e300d1c794ec+ remote 79cc6877a3b7
rev: versions differ -> m
a: remote moved to b -> m
merging a and b
my a@e300d1c794ec+ other b@79cc6877a3b7 ancestor a@924404dff337
copying a to b
removing a
merging rev
my rev@e300d1c794ec+ other rev@79cc6877a3b7 ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
a
--------------
--------------
test L:um a b R:up a W: - 21 merge a and b to b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ec03c2ca8642+ remote f4db7e329e71
b: local moved to a -> m
rev: versions differ -> m
merging b and a
my b@ec03c2ca8642+ other a@f4db7e329e71 ancestor a@924404dff337
merging rev
my rev@ec03c2ca8642+ other rev@f4db7e329e71 ancestor rev@924404dff337
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
a
--------------
--------------
test L:nm a b R:up a c W: - 23 get c, keep b
--------------
resolving manifests
overwrite None partial False
ancestor 924404dff337 local ecf3cb2a4219+ remote 2b958612230f
b: local moved to a -> m
rev: versions differ -> m
c: remote created -> g
merging b and a
my b@ecf3cb2a4219+ other a@2b958612230f ancestor a@924404dff337
getting c
merging rev
my rev@ecf3cb2a4219+ other rev@2b958612230f ancestor rev@924404dff337
1 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
--------------
M b
a
M c
--------------