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PROGRAM:

NAME


gosh - a Scheme script interpreter

SYNOPSIS


gosh [-biqV] [-I path ] [-A path ] [-u module ] [-l file ] [-e expr ] [-E expr ] [-f flag
] [--] [ script argument ... ]

DESCRIPTION


Gosh is a stand-alone Scheme interpreter built on top of the Gauche Scheme script engine.

When script is given, gosh loads the script, evaluating Scheme code in it. Then, if the
script defines a procedure named main, gosh calls it with a single argument which is a
list of the script name and subsequent arguments. When main returns an integer value,
gosh exits with it as an exit code. If main returns non-integer value, or an error is
signaled during evaluation, gosh exits with exit code 70 (EX_SOFTWARE). See SRFI-22
(http://srfi.schemers.org/srfi-22/srfi-22.html) for details. If there's no main procedure
defined in the script, gosh exits with code 0 after loading the script file.

If no script file is given, gosh goes into an interactive mode. By default, gosh prompts
the user to enter a Scheme expression, read and evaluates it, then prints the result,
until EOF is read. If the standard input is not a terminal, however, gosh doesn't print a
prompt; it allows a user to use gosh as a filter program. This behavior can be controlled
by -i or -b option; see below.

OPTIONS


Command line options are processed before loading the script file or entering the
interactive mode.

The options -I, -A, -u, -l, -L, -e and -E are processed in the order of appearance. For
example, adding a load path by -I option affects the -l options after it, but not the ones
before it.

-V Prints gosh version and exits.

-b Batch mode. Doesn't print prompt even the standard input is a terminal. Supersedes
-i.

-i Interactive mode. Forces to print prompt, even the standard input is not a terminal.

-q Prevents reading the default initialization file.

-Ipath
Adds path in front of the load path list.

-Apath
Appends path to the tail of the load path list.

-umodule
Loads and imports module, as if "(use module )" is specified in the code.

-lfile
Loads a Scheme file file.

-Lfile
Like -l, but doesn't complain if file doesn't exist.

-eexpr
Evaluates a Scheme expression expr.

-Eexpr
Same as -e, except that the expr is read as if it is surrounded by parenthesis.

-ptype
Turns on the profiler. Currently type can only be 'time'.

-fflag
Sets various flags.
case-fold uses case-insensitive reader (as in R5RS)
load-verbose report while loading files
no-inline don't inline primitive procedures and constants
(combined no-inline-globals, no-inline-locals, and
no-inline-constants.)
no-inline-globals don't inline global procedures.
no-inline-locals don't inline local procedures.
no-inline-constants don't inline constants.
no-post-inline-pass don't run post-inline optimization pass.

-Ffeature
Makes feature available in cond-expand forms.

-- Specifies that there are no more options. If there are more arguments after this,
they are taken as script file name and its arguments.

ENVIRONMENT


GAUCHE_LOAD_PATH
A colon separated list of the load paths.
The paths are appended before the system default load paths.

GAUCHE_DYNLOAD_PATH
A colon separated list of the load paths for dynamically loaded
objects. The paths are appended before the system default load paths.

AUTHORS


Shiro Kawai (shiro @ acm . org)

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