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                    )
                )
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            (command.Assignment
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        (word_part.BracedVarSub
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            (C {(display)} 
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                (DQ ($ VSub_DollarName '$INFO') ('    ') ($ VSub_Number '$0') (' ') 
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            (C {(new_step)} {(SQ <'Building Bazel from scratch'>)})
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          action: [
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                        (C {(grep)} {(-q)} {(SQ <'\\-sdk iphonesimulator'>)})
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          action: [
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                (C {(fail)} 
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                    (DQ ("Could not find freshly built Bazel binary at '") 
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                (C {(fail)} 
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          ]
          action: [
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                            (word_part.BracedVarSub
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                  action: [
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                    )
                    (C {(log)} {(DQ ('First build'))})
                    (C {(bootstrap_test)} {(${ VSub_Name BAZEL)} {(${ VSub_Name BAZEL_SUM)})
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                      terminator: <Op_Semi ';'>
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                  action: [
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                            )
                        )
                        (C {(fail)} {(DQ ('Differences detected in outputs!'))})
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          ]
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          ]
          action: [
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            (C {(log)} {(DQ ('Querying //:srcs'))})
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                (C {(grep)} {(-v)} {(SQ <'^@'>)})
                (C {(sed)} {(-e)} {(SQ <'s|^//||'>)})
                (C {(sed)} {(SQ <'s|^:||'>)})
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              negated: F
            )
            (C {(log)} {(DQ ('Finding all files'))})
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                      (word_part.BracedVarSub
                        token: <VSub_Name SRCS_EXCLUDES>
                        suffix_op: 
                          (suffix_op.Unary
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            (command.Pipeline
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                (C {(sed)} {(SQ <'s|./||'>)})
                (C {(grep)} {(-v)} {(SQ <'^bazel-'>)})
                (C {(grep)} {(-v)} {(SQ <'^WORKSPACE.user.bzl'>)})
                (C {(grep)} {(-v)} {(SQ <'^\\.'>)})
                (C {(grep)} {(-v)} {(SQ <'^out/'>)})
                (C {(grep)} {(-v)} {(SQ <'^output/'>)})
                (C {(grep)} {(-Ev)} {(DQ (${ VSub_Name SRCS_EXCLUDES))})
                (C {(grep)} {(-v)} {(SQ <'^tools/defaults/BUILD'>)})
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                      fd: 16777215
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              negated: F
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            (C {(log)} {(DQ (Diffing))})
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                                        (C {(sed)} {(SQ <'s|^-||'>)})
                                        (C {(grep)} {(-Ev)} {(SQ <'^(@@|\\+\\+|--)'>)})
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                                    (C {(true)})
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                        )
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