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chibi-scheme(1)						       chibi-scheme(1)

NAME
       chibi-scheme - a tiny Scheme interpreter

SYNOPSIS
       chibi-scheme  [-qQrRfV] [-I path ] [-A path ] [-m module ] [-x module ]
       [-l file ] [-e expr ] [-p expr ] [-t module.id ] [-d image-file	]  [-i
       image-file ] [--] [ script argument ...	]

DESCRIPTION
       chibi-scheme  is a sample interactive Scheme interpreter for the chibi-
       scheme library.	It serves as an example of how to  embed  chibi-scheme
       in  applications,  and can be useful on its own for writing scripts and
       interactive development.

       When script is given, the script will be loaded with SRFI-22 semantics,
       calling	the  procedure	main (if defined) with a single parameter as a
       list of the command-line arguments  beginning  with  the	 script	 name.
       This works as expected with shell #! semantics.

       Otherwise,  if  no script is given and no -e or -p options are given an
       interactive repl is entered, reading, evaluating, then printing expres‐
       sions until EOF is reached.  The repl provided is very minimal - if you
       want readline completion you may want to wrap  it  with	the  rlwrap(1)
       program.	  Signals  aren't  caught either - to enable handling keyboard
       interrupts you can use the (chibi process) module.  For a more  sophis‐
       ticated	REPL with readline support, signal handling, module management
       and smarter read/write you may want to use  the	(chibi	repl)  module.
       This can be launched automatically with: chibi-scheme -R .

       The  default  language  the R7RS (scheme base) module.  To get a mostly
       R5RS-compatible language, use chibi-scheme -xscheme.r5rs or to get just
       the  core  language used for bootstrapping, use chibi-scheme -xchibi or
       its shortcut chibi-scheme -q .

OPTIONS
       Space is optional between options and their arguments.  Options without
       arguments may not be chained together.

       To  reduce  the need for shell escapes, options with module arguments (
       -m , -x and -R ) are written in a dot notation, so that the module (foo
       bar) is written as foo.bar .

       -V   Prints the version information and exits.

       -q   "Quick" load, shortcut for chibi-scheme -xchibi This is a slightly
	    different language from (scheme base), which may load faster,  and
	    is guaranteed not to load any additional shared libraries.

       -Q   Extra  "quick"  load,  shortcut for chibi-scheme -xchibi.primitive
	    The resulting environment will only	 contain  the  core  syntactic
	    forms and primitives coded in C.  This is very fast and guaranteed
	    not to load any external files, but is also very limited.

       -r[main]
	    Run the "main" procedure when the script finishes  loading	as  in
	    SRFI-22.

       -R[module]
	    Loads  the	given  module and runs the "main" procedure it defines
	    (which need not be exported) with a single argument of the list of
	    command-line  arguments  as	 in  SRFI-22.	The name "main" can be
	    overridden with the -r option.  [module] may be omitted, in	 which
	    case it default to chibi.repl.  Thus chibi-scheme -R is the recom‐
	    mended means to obtain the advanced REPL.

       -s   Strict mode, escalating warnings to fatal errors.

       -f   Change the reader to case-fold symbols as in R5RS.

       -hsize[/max_size]
	    Specifies the initial size of the heap, in bytes, optionally  fol‐
	    lowed  by  the maximum size the heap can grow to.  size can be any
	    integer value, optionally suffixed by "K", for kilobytes, "M"  for
	    megabytes,	or "G" for gigabytes.  -h must be specified before any
	    options which load or evaluate Scheme code.

       -Ipath
	    Inserts path on front of the load path list.

       -Apath
	    Appends path to the load path list.

       -mmodule

       -xmodule
	    Imports module as though "(import module )"	 were  evaluated.   If
	    the	 -x version is used, then module replaces the current environ‐
	    ment instead of being added to it.

       -lfile
	    Loads the Scheme source from the file file	searched  for  in  the
	    default load path.

       -eexpr
	    Evaluates the Scheme expression expr.

       -pexpr
	    Evaluates  the  Scheme  expression	expr then prints the result to
	    stdout.

       -tmodule.id
	    Enables tracing for the given identifier id in the module module.

       -dimage-file
	    Dumps the current Scheme heap to image-file and exits.  This  fea‐
	    ture is still experimental.

       -iimage-file
	    Loads  the	Scheme	heap  from image-file instead of compiling the
	    init file on the fly.  This feature is still experimental.

ENVIRONMENT
       CHIBI_MODULE_PATH
	      A colon separated list  of  directories  to  search  for	module
	      files,  inserted	before	the system default load paths.	chibi-
	      scheme searchs for  modules  in  directories  in	the  following
	      order:

		 directories included with the -I path option

		 directories included from CHIBI_MODULE_PATH

		 system directories

		 directories included with -A path option

	      If CHIBI_MODULE_PATH is unset, the directoriese "./lib", and "."
	      are search in order.

AUTHORS
       Alex Shinn (alexshinn @ gmail . com)

SEE ALSO
       More detailed information can be	 found	in  the	 manuale  included  in
       doc/chibi.scrbl included in the distribution.

       The chibi-scheme home-page:
       http://code.google.com/p/chibi-scheme/

4th Berkeley Distribution				       chibi-scheme(1)
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