rewrite demandload module to be more flexible. performance not affected. old demandload module could only import top-level modules like os and sys. with rewrite, all of following syntax is emulated perfectly: import foo, bar foo bar import foo.bar.quux foo.bar.quux from foo.bar import quux, blurfl foo.bar:quux,blurfl only thing missing is "import foo as bar". also, namespace clashes between placeholder object and demand loaded module are no longer possible.

%% no merges expected
%% merge should fail
abort: 'b' already exists in the working dir and differs from remote
%% merge of b expected
merging for b
merging b
%%
Contents of b should be "this is file b1"
This is file b1
%% merge fails
abort: outstanding uncommited changes
%% merge expected!
merging for b
merging b
%% merge of b should fail
abort: outstanding uncommited changes
%% merge of b expected
merging for b
merging b