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  • Gregory Szorc's avatar
    py3: manually import pycompat.open into files that need it · eef9a2d67051
    Gregory Szorc authored
    We want to eliminate the source transformer. Currently it inserts
    a `from mercurial.pycompat import ...` at the top of files to alias
    some builtins.
    
    This commit replaces the implicit import of `open` with an explicit
    import on files that need it and changes the source transformer to
    no longer import `open`.
    
    As part of this, we needed to store an explicit local for `open` in
    the Python 2 code path in `pycompat` so the import works. (Builtins
    that are automatically in scope cannot be imported.)
    
    Differential Revision: https://phab.mercurial-scm.org/D7005
    eef9a2d67051