/usr/local/lib/swipl/library/listing.pl
All Application Manual Name SummaryHelp

  • swipl
    • library
      • error.pl
      • debug.pl -- Print debug messages and test assertions
      • apply.pl
      • lists.pl
      • broadcast.pl -- Event service
      • shlib.pl
      • option.pl
      • thread_pool.pl
      • gensym.pl
      • settings.pl
      • arithmetic.pl
      • main.pl
      • readutil.pl
      • operators.pl -- Manage operators
      • pairs.pl
      • prolog_source.pl -- Examine Prolog source-files
      • record.pl
      • quasi_quotations.pl
      • pure_input.pl -- Pure Input from files and streams
      • solution_sequences.pl
      • ordsets.pl
      • random.pl
      • base64.pl
      • aggregate.pl
      • yall.pl
      • sandbox.pl
      • apply_macros.pl -- Goal expansion rules to avoid meta-calling
      • assoc.pl
      • prolog_format.pl -- Analyse format specifications
      • predicate_options.pl
      • csv.pl
      • pprint.pl
      • atom.pl
      • modules.pl
      • occurs.pl
      • prolog_xref.pl
      • prolog_colour.pl -- Prolog syntax colouring support.
      • lazy_lists.pl
      • ugraphs.pl
      • url.pl
      • www_browser.pl
      • prolog_pack.pl -- A package manager for Prolog
      • git.pl
      • utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
      • dialect.pl
      • system.pl
      • terms.pl
      • date.pl
      • persistency.pl
      • iostream.pl -- Utilities to deal with streams
      • prolog_stack.pl
      • edinburgh.pl
      • prolog_clause.pl
      • prolog_breakpoints.pl
      • wfs.pl
      • prolog_code.pl -- Utilities for reasoning about code
      • sort.pl
      • dicts.pl
      • dif.pl -- The dif/2 constraint
      • varnumbers.pl
      • pio.pl
      • backcomp.pl
      • ctypes.pl
      • prolog_history.pl
      • base32.pl
      • check.pl
      • charsio.pl
      • codesio.pl
      • coinduction.pl
      • heaps.pl
      • rbtrees.pl
      • statistics.pl
      • when.pl
      • threadutil.pl -- Interactive thread utilities
      • ansi_term.pl -- Print decorated text to ANSI consoles
      • listing.pl -- List programs and pretty print clauses
        • listing/0
        • listing/1
        • listing/2
        • portray_clause/1
        • portray_clause/2
        • portray_clause/3
      • macros.pl
      • increval.pl
      • tables.pl
      • prolog_versions.pl -- Demand specific (Prolog) versions
      • prolog_profile.pl
      • prolog_coverage.pl
      • prolog_trace.pl
      • exceptions.pl
      • oset.pl
      • nb_set.pl
      • thread.pl
      • prolog_codewalk.pl
      • prolog_metainference.pl
      • quintus.pl
      • files.pl
      • prolog_autoload.pl
      • prolog_config.pl
      • hashtable.pl
      • intercept.pl
 portray_clause(+Clause) is det
 portray_clause(+Out:stream, +Clause) is det
 portray_clause(+Out:stream, +Clause, +Options) is det
Portray `Clause' on the current output stream. Layout of the clause is to our best standards. Deals with control structures and calls via meta-call predicates as determined using the predicate property meta_predicate. If Clause contains attributed variables, these are treated as normal variables.

Variable names are by default generated using numbervars/4 using the option singletons(true). This names the variables A, B, ... and the singletons _. Variables can be named explicitly by binding them to a term '$VAR'(Name), where Name is an atom denoting a valid variable name (see the option numbervars(true) from write_term/2) as well as by using the variable_names(Bindings) option from write_term/2.

Options processed in addition to write_term/2 options:

variable_names(+Bindings)
See above and write_term/2.
indent(+Columns)
Left margin used for the clause. Default 0.
module(+Module)
Module used to determine whether a goal resolves to a meta predicate. Default user.