branch heads: fix regression introduced in
e67e5b60e55f (
issue1726)
For merge nodes it is not adequate to only check a single possible
branch head for whether it is an ancestor of the latest head, but it
needs to be done for each possible branch head.
% changing local directly
merge succeeded
local
base
other
% printing to stdout
local
base
other
local:
local
base
% conflicts
base
<<<<<<< conflict-local
not other
=======
other
>>>>>>> conflict-other
end
warning: conflicts during merge.
merge failed
% --no-minimal
base
<<<<<<< conflict-local
not other
end
=======
other
end
>>>>>>> conflict-other
warning: conflicts during merge.
% 1 label
base
<<<<<<< foo
not other
=======
other
>>>>>>> conflict-other
end
warning: conflicts during merge.
% 2 labels
base
<<<<<<< foo
not other
=======
other
>>>>>>> bar
end
warning: conflicts during merge.
% too many labels
abort: can only specify two labels.
% binary file
abort: binary-local looks like a binary file.
% binary file --text
warning: binary-local looks like a binary file.
\x00local
base
other
% help
simplemerge [OPTS] LOCAL BASE OTHER
Simple three-way file merge utility with a minimal feature set.
Apply to LOCAL the changes necessary to go from BASE to OTHER.
By default, LOCAL is overwritten with the results of this operation.
options:
-L --label labels to use on conflict markers
-a --text treat all files as text
-p --print print results instead of overwriting LOCAL
--no-minimal do not try to minimize conflict regions
-h --help display help and exit
-q --quiet suppress output
% wrong number of arguments
simplemerge: wrong number of arguments
simplemerge [OPTS] LOCAL BASE OTHER
Simple three-way file merge utility with a minimal feature set.
Apply to LOCAL the changes necessary to go from BASE to OTHER.
By default, LOCAL is overwritten with the results of this operation.
options:
-L --label labels to use on conflict markers
-a --text treat all files as text
-p --print print results instead of overwriting LOCAL
--no-minimal do not try to minimize conflict regions
-h --help display help and exit
-q --quiet suppress output
% bad option
simplemerge: option --foo not recognized
simplemerge [OPTS] LOCAL BASE OTHER
Simple three-way file merge utility with a minimal feature set.
Apply to LOCAL the changes necessary to go from BASE to OTHER.
By default, LOCAL is overwritten with the results of this operation.
options:
-L --label labels to use on conflict markers
-a --text treat all files as text
-p --print print results instead of overwriting LOCAL
--no-minimal do not try to minimize conflict regions
-h --help display help and exit
-q --quiet suppress output