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  inside \code{debugger}.
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  inside \code{debugger}.
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  If the error occurred when computing the default value of a formal
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  If the error occurred when computing the default value of a formal
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  argument the debugger will report \dQuote{recursive default argument
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  argument the debugger will report \dQuote{recursive default argument
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  reference} when trying to examine that environment.
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  reference} when trying to examine that environment.
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  Of course post-mortem debugging will not work if \R is too damaged to
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  Of course post-mortem debugging will not work if \R is too damaged to
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  produce and save the dump, for example if it has run out of workspace.
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  produce and save the dump, for example if it has run out of workspace.
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}
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}
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\references{
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\references{
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  Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988)
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  Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988)
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Browse[1]> ls()
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Browse[1]> ls()
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[1] "g"
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[1] "g"
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Browse[1]> g
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Browse[1]> g
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function() stop("test dump.frames")
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function() stop("test dump.frames")
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<environment: 759818>
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<environment: 759818>
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Browse[1]>
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Browse[1]>
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Available environments had calls:
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Available environments had calls:
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1: f()
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1: f()
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2: g()
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2: g()
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3: stop("test dump.frames")
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3: stop("test dump.frames")
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