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update docs regarding --debug

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* doc/ref/scheme-scripts.texi (Invoking Guile): Update docs on --debug.
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Andy Wingo 2010-10-07 12:56:43 +02:00
parent e7544f39a4
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doc/ref/scheme-scripts.texi
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@ -174,15 +174,19 @@ guile --use-srfi=8,13
@end example
@item --debug
Start with the debugging evaluator and enable backtraces. Using the
debugging evaluator will give you better error messages but it will
slow down execution. By default, the debugging evaluator is only used
when entering an interactive session. When executing a script with
@code{-s} or @code{-c}, the normal, faster evaluator is used by default.
Start with the debugging virtual machine engine. Using the debugging VM
will enable support for VM hooks, which are needed for tracing,
breakpoints, and accurate call counts when profiling. The debugging VM
is slower than the regular VM, though, by about 10 percent. @xref{VM
Hooks}, for more information.
By default, the debugging VM engine is only used when entering an
interactive session. When executing a script with @code{-s} or
@code{-c}, the normal, faster VM is used by default.
@vnew{1.8}
@item --no-debug
Do not use the debugging evaluator, even when entering an interactive
Do not use the debugging VM engine, even when entering an interactive
session.
@item -h@r{, }--help