prolog_main:main/0

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Predicate main/0

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swipl
- library

Call main/1 using the passed command-line arguments. Before calling main/1 this predicate installs a signal handler for SIGINT (Control-C) that terminates the process with status 1.

When main/0 is called interactively it simply calls main/1 with the arguments. This allows for debugging scripts as follows:

$ swipl -l script.pl -- arg ...
?- gspy(suspect/1).		% setup debugging
?- main.			% run program