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@ -1,6 +1,6 @@
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* Introduction
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* Introduction
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Version: $Id: langtools.text,v 1.3 2000-08-13 03:44:52 mdj Exp $
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Version: $Id: langtools.text,v 1.4 2000-08-13 04:16:18 mdj Exp $
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This is a proposal for how Guile could interface with language
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This is a proposal for how Guile could interface with language
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translators. It will be posted on the Guile list and revised for some
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translators. It will be posted on the Guile list and revised for some
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@ -189,6 +189,20 @@ Therefore, the repl provides a special command language on top of
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whatever syntax the current module provides. (Scheme48 and RScheme
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whatever syntax the current module provides. (Scheme48 and RScheme
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provides similar repl command languages.)
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provides similar repl command languages.)
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[Jost Boekemeier has suggested the following alternative solution:
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Commands are bindings just like any other binding. It is enough if
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some modules carry command bindings (it's in fact enough if *one*
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module has them), because from such a module you can use the command
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(in MODULE) to walk into a module not carrying command bindings, and
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then use CTRL-D to exit.
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However, this has the disadvantage of mixing the "real" bindings with
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command bindings (the module might want to use "in" for other
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purposes), that CTRL-D could cause problems since for some channels
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CTRL-D might close down the connection, and that using one type of
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command ("in") to go "into" the module and another (CTRL-D) to "exit"
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is more complex than simply "going to" a module.]
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*** Repl command syntax
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*** Repl command syntax
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Normally, repl commands have the syntax
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Normally, repl commands have the syntax
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@ -399,8 +413,8 @@ Return a THUNK which can be called repeatedly like this:
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THUNK --> SCHEMECODE
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THUNK --> SCHEMECODE
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Each call will yield a new piece of scheme code. The THUNK signals
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Each call will yield a new piece of scheme code. The THUNK signals
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end of translation by returning the unique value *end-of-translation*
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end of translation by returning the value *end-of-translation* (which
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which can be tested using the predicate `end-of-translation?'.
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is tested using the predicate `end-of-translation?').
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The optional argument ALIST provides compilation options for the
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The optional argument ALIST provides compilation options for the
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translator:
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translator:
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