tests/test-empty-group.out

ui: look before you leap on sys.stderr.closed (and look nicer)

f83291e5643e introduced a fix if sys.stdout.closed does not exist.

This change uses a getattr with default instead of hasattr (which just calls
getattr) and accessing the attribute.

Additionally it applies the same fix for sys.stderr.closed as this is not
available in the bpython shell (reported by Roger Gammans).

adding init
adding x
adding y
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
adding x
adding y
created new head
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
created new head
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 3 changes to 3 files
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
requesting all changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 3 changes to 3 files
updating to branch default
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
comparing with b
searching for changes
changeset:   4:fdb3c546e859
tag:         tip
parent:      1:1f703b3fcbc6
parent:      2:de997049e034
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m2

comparing with c
searching for changes
changeset:   3:f40f830c0024
parent:      2:de997049e034
parent:      1:1f703b3fcbc6
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m1

comparing with c
searching for changes
changeset:   3:f40f830c0024
tag:         tip
parent:      2:de997049e034
parent:      1:1f703b3fcbc6
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m1

comparing with b
searching for changes
changeset:   3:fdb3c546e859
tag:         tip
parent:      1:1f703b3fcbc6
parent:      2:de997049e034
user:        test
date:        Mon Jan 12 13:46:40 1970 +0000
summary:     m2

pulling from a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
pulling from a
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files (+1 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)