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          unsure:
            files that might have been modified since the dirstate was
            written, but need to be read to be sure (size is the same
            but mtime differs)
          modified:
            files that have definitely been modified since the dirstate
            was written (different size or mode)
          added:
            files that have been explicitly added with hg add
          removed:
            files that have been explicitly removed with hg remove
          deleted:
            files that have been deleted through other means ("missing")
          unknown:
            files not in the dirstate that are not ignored
          ignored:
            files not in the dirstate that are ignored
            (by _dirignore())
          clean:
            files that have definitely not been modified since the
            dirstate was written
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