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).
#!/bin/sh
HGMERGE=true; export HGMERGE
hg init basic
cd basic
echo '# should complain'
hg backout
hg backout -r 0 0
echo '# basic operation'
echo a > a
hg commit -d '0 0' -A -m a
echo b >> a
hg commit -d '1 0' -m b
hg backout -d '2 0' tip
cat a
echo '# file that was removed is recreated'
cd ..
hg init remove
cd remove
echo content > a
hg commit -d '0 0' -A -m a
hg rm a
hg commit -d '1 0' -m b
hg backout -d '2 0' --merge tip
cat a
echo '# backout of backout is as if nothing happened'
hg backout -d '3 0' --merge tip
cat a 2>/dev/null || echo cat: a: No such file or directory
echo '# across branch'
cd ..
hg init branch
cd branch
echo a > a
hg ci -Am0
echo b > b
hg ci -Am1
hg co -C 0
# should fail
hg backout 1
echo c > c
hg ci -Am2
# should fail
hg backout 1
echo '# backout with merge'
cd ..
hg init merge
cd merge
echo line 1 > a
echo line 2 >> a
hg commit -d '0 0' -A -m a
# remove line 1
echo line 2 > a
hg commit -d '1 0' -m b
echo line 3 >> a
hg commit -d '2 0' -m c
hg backout --merge -d '3 0' 1
hg commit -d '4 0' -m d
# check line 1 is back
cat a
echo '# backout should not back out subsequent changesets'
hg init onecs
cd onecs
echo 1 > a
hg commit -d '0 0' -A -m a
echo 2 >> a
hg commit -d '1 0' -m b
echo 1 > b
hg commit -d '2 0' -A -m c
hg backout -d '3 0' 1
hg locate b
hg update -C tip
hg locate b
cd ..
hg init m
cd m
echo a > a
hg commit -d '0 0' -A -m a
echo b > b
hg commit -d '1 0' -A -m b
echo c > c
hg commit -d '2 0' -A -m b
hg update 1
echo d > d
hg commit -d '3 0' -A -m c
hg merge 2
hg commit -d '4 0' -A -m d
echo '# backout of merge should fail'
hg backout 4
echo '# backout of merge with bad parent should fail'
hg backout --parent 0 4
echo '# backout of non-merge with parent should fail'
hg backout --parent 0 3
echo '# backout with valid parent should be ok'
hg backout -d '5 0' --parent 2 4
hg rollback
hg update -C
hg backout -d '6 0' --parent 3 4
cd ..
echo '# named branches'
hg init named_branches
cd named_branches
echo default > default
hg ci -d '0 0' -Am default
hg branch branch1
echo branch1 > file1
hg ci -d '1 0' -Am file1
hg branch branch2
echo branch2 > file2
hg ci -d '2 0' -Am file2
hg backout -d '3 0' -r 1 -m 'backout on branch1'
# XXX maybe backout shouldn't suggest a merge here as it is a different branch?
echo '% on branch2 with branch1 not merged, so file1 should still exist:'
hg id
hg st -A
echo '% on branch2 with branch1 merged, so file1 should be gone:'
hg merge
hg ci -d '4 0' -m 'merge backout of branch1'
hg id
hg st -A
echo '% on branch1, so no file1 and file2:'
hg co -C branch1
hg id
hg st -A
exit 0