a68g man page on Cygwin

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A68G(1)			      Programmer's Manual		       A68G(1)

NAME
     a68g - Algol 68 Genie, an Algol 68 compiler-interpreter

SYNOPSIS
     a68g [--apropos | --help | --info [string]]
     [--assertions | --no-assertions] [--backtrace | --no-backtrace]
     [--brackets] [--check | --no-run] [--compile | --no-compile] [--clock]
     [--debug | --monitor] [--echo string] [--execute unit | -x unit]
     [--exit | --] [--extensive] [-f | --file string] [--frame number]
     [--handles number] [--heap number] [--listing] [--moids]
     [-O | -O0 | -O1 | -O2 | -O3] [--object | --no-object] [--overhead number]
     [--optimise | --no-optimise] [--pedantic] [--portcheck | --no-portcheck]
     [--pragmats | --no-pragmats] [--precision number] [--prelude-listing]
     [--pretty-print] [--print unit | -p unit] [--quiet] [--quote-stropping]
     [--reductions] [--rerun] [--run] [--script string]
     [--source | --no-source] [--stack number] [--statistics] [--strict]
     [--terminal] [--time-limit number] [--trace | --no-trace]
     [--tree | --no-tree] [--unused] [--upper-stropping] [--verbose]
     [--version] [--warnings | --no-warnings] [--xref | --no-xref] filename

DESCRIPTION
     Algol 68 Genie (Algol68G) is an Algol 68 compiler-interpreter. It can be
     used for executing Algol 68 programs or scripts. Algol 68 is a rather
     lean orthogonal general-purpose language that is a beautiful means for
     denoting algorithms. Algol 68 was designed as a general-purpose program‐
     ming language by IFIP Working Group 2.1 (Algorithmic Languages and Cal‐
     culi) that has continuing responsibility for Algol 60 and Algol 68.

     Algol 68 Genie and its documentation can be obtained from

	 http://jmvdveer.home.xs4all.nl/

OPTIONS
     Options are passed to a68g either from the file .a68g.rc in the working
     directory, the environment variable A68G_OPTIONS, the command-line or
     from pragmats.

     Option precedence is as follows: pragmat options supersede command-line
     options, command-line options supersede options in environment variable
     A68G_OPTIONS, A68G_OPTIONS supersedes options in .a68g.rc.

     Listing options, tracing options and -pragmat, -nopragmat, take their
     effect when they are encountered in a left-to-right pass of the program
     text, and can thus be used, for example, to generate a cross reference
     for a particular part of the program.

     Where numeric arguments are required, suffices k, M or G are allowed for
     multiplication with 2 ** 10, 2 ** 20 or 2 ** 30 respectively.

     --apropos | --help | --info [string]
	     Print info on options if string is omitted, or print info on
	     string otherwise.

     --assertions | --no-assertions
	     Control elaboration of assertions.

     --backtrace | --no-backtrace
	     Control whether a stack backtrace is done in case a runtime-error
	     occurs.

     --brackets
	     Consider [ .. ] and { .. } as being equivalent to ( .. ). Tradi‐
	     tional Algol 68 syntax allows ( .. ) to replace [ .. ] in bounds
	     and slices.

     --check | --no-run
	     Check syntax only, the interpreter does not start.

     --clock
	     Report execution time excluding time needed for compilation.

     --compile | --no-compile
	     Switch compilation of units on or off. Compilation omits many of
	     the runtime checks offered by the interpreter proper. The program
	     is not executed and a shell script is generated combining source
	     code and its shared library. This shell script can be used as a
	     pseudo-executable.

     --debug | --monitor
	     Start in the monitor. Invoke the monitor in case a runtime-error
	     occurs; the program will pause in the monitor on the line that
	     contains the error.

     --echo string
	     Echo string to standout.

     --execute unit | --x unit
	     Execute the Algol 68 unit. In this way one-liners can be executed
	     from the command line.

     --exit | --
	     Ignore further options.

     --extensive
	     Generate an extensive listing.

     -f | --file string
	     Accept string as filename in case it conflicts with shell syntax.

     --frame number
	     Set the frame stack size to number bytes.

     --handles number
	     Set the handle space size to number bytes.

     --heap number
	     Set the heap size to number bytes.

     --listing
	     Generate a concise listing.

     --moids
	     Generate an overview of modes in the listing file.

     --object | --no-object
	     Control the listing of C code in the listing file.

     --optimise | --no-optimise
	     Switch compilation of units on or off. Compilation omits many of
	     the runtime checks offered by the interpreter proper.  This
	     option is equivalent to -O2.

     -O | -O0 | -O1 | -O2 | -O3
	     Switch compilation of units on and pass the option to the back-
	     end C compiler to set the optimiser level.

     --overhead number
	     Set overhead for stack checking.

     --pedantic
	     Equivalent to --warnings --portcheck

     --portcheck | --no-portcheck
	     Enable or disable portability warning messages.

     --pragmats | --no-pragmats
	     Control elaboration of pragmats.

     --precision number
	     Set the precision for LONG LONG modes to number significant dig‐
	     its.

     --prelude-listing
	     Generate a listing of preludes.

     --pretty-print
	     Pretty-print the source file.

     --print unit | --p unit
	     Print the value yielded by the Algol 68 unit. In this way one-
	     liners can be executed from the command line.

     --quiet
	     Suppress all warning messages.

     --quote-stropping
	     Use quote stropping.

     --reductions
	     Print reductions made by the parser.

     --rerun
	     Use compiled code of a previous run.

     --run   Override the --no-run option.

     --script string
	     Takes string as source file name and skips further option pro‐
	     cessing so these can be handled by the script.

     --source | --no-source
	     Control the listing of source lines in the listing file.

     --stack number
	     Set the stack size to number bytes.

     --statistics
	     Generate statistics in the listing file.

     --strict
	     Ignores extensions to Algol 68 syntax.

     --time-limit number
	     Interrupt the interpreter after number seconds, generating a time
	     limit exceeded error.

     --trace | --no-trace
	     Control tracing of the running program.

     --tree | --no-tree
	     Control listing of the syntax tree in the listing file.

     --unused
	     Generate an overview of unused tags in the listing file.

     --upper-stropping
	     Use upper stropping, which is the default stropping regime.

     --verbose
	     Use verbose mode.

     --version
	     Print the version of the running image of a68g.

     --warnings | --no-warnings
	     Enable warning messages or suppress suppressible warning mes‐
	     sages.

     --xref | --no-xref
	     Control generation of a cross-reference in the listing file.

AUTHOR
     Author of Algol 68 Genie is Marcel van der Veer <algol68g@xs4all.nl>.

LINUX				 June 21, 2013				 LINUX
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