/usr/lib/swipl/library/editline.pl
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  • swipl
    • library
      • settings.pl -- Setting management
      • error.pl -- Error generating support
      • broadcast.pl -- Event service
      • debug.pl -- Print debug messages and test assertions
      • lists.pl -- List Manipulation
      • pairs.pl -- Operations on key-value lists
      • option.pl -- Option list processing
      • arithmetic.pl -- Extensible arithmetic
      • pldoc.pl -- Process source documentation
      • apply.pl -- Apply predicates on a list
      • operators.pl -- Manage operators
      • prolog_source.pl -- Examine Prolog source-files
      • pengines.pl -- Pengines: Web Logic Programming Made Easy
      • time.pl -- Time and alarm library
      • shlib.pl -- Utility library for loading foreign objects (DLLs, shared objects)
      • zip.pl -- Access resource ZIP archives
      • uri.pl -- Process URIs
      • socket.pl -- Network socket (TCP and UDP) library
      • thread_pool.pl -- Resource bounded thread management
      • rbtrees.pl -- Red black trees
      • gensym.pl -- Generate unique symbols
      • readutil.pl -- Read utilities
      • url.pl -- Analysing and constructing URL
      • utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
      • memfile.pl
      • sgml.pl -- SGML, XML and HTML parser
      • iostream.pl -- Utilities to deal with streams
      • dialect.pl -- Support multiple Prolog dialects
      • quasi_quotations.pl -- Define Quasi Quotation syntax
      • pure_input.pl -- Pure Input from files and streams
      • base64.pl -- Base64 encoding and decoding
      • aggregate.pl -- Aggregation operators on backtrackable predicates
      • ordsets.pl -- Ordered set manipulation
      • oset.pl -- Ordered set manipulation
      • record.pl -- Access compound arguments by name
      • filesex.pl -- Extended operations on files
      • charsio.pl -- I/O on Lists of Character Codes
      • sandbox.pl -- Sandboxed Prolog code
      • assoc.pl -- Binary associations
      • prolog_format.pl -- Analyse format specifications
      • when.pl -- Conditional coroutining
      • modules.pl -- Module utility predicates
      • term_to_json.pl
      • uuid.pl -- Universally Unique Identifier (UUID) Library
      • ssl.pl -- Secure Socket Layer (SSL) library
      • crypto.pl -- Cryptography and authentication library
      • solution_sequences.pl -- Modify solution sequences
      • nb_set.pl -- Non-backtrackable sets
      • terms.pl -- Term manipulation
      • apply_macros.pl -- Goal expansion rules to avoid meta-calling
      • sha.pl -- SHA secure hashes
      • random.pl -- Random numbers
      • pcre.pl -- Perl compatible regular expression matching for SWI-Prolog
      • pengines_io.pl -- Provide Prolog I/O for HTML clients
      • listing.pl -- List programs and pretty print clauses
      • ansi_term.pl -- Print decorated text to ANSI consoles
      • prolog_clause.pl -- Get detailed source-information about a clause
      • occurs.pl -- Finding and counting sub-terms
      • yall.pl -- Lambda expressions
      • prolog_stream.pl -- A stream with Prolog callbacks
      • process.pl -- Create processes and redirect I/O
      • zlib.pl -- Zlib wrapper for SWI-Prolog
      • bdb.pl -- Berkeley DB interface
      • hash_stream.pl -- Maintain a hash on a stream
      • md5.pl -- MD5 hashes
      • porter_stem.pl
      • csv.pl -- Process CSV (Comma-Separated Values) data
      • pprint.pl -- Pretty Print Prolog terms
      • atom.pl -- Operations on atoms
      • ctypes.pl -- Character code classification
      • prolog_xref.pl -- Prolog cross-referencer data collection
      • prolog_colour.pl -- Prolog syntax colouring support.
      • predicate_options.pl -- Access and analyse predicate options
      • lazy_lists.pl -- Lazy list handling
      • ugraphs.pl -- Graph manipulation library
      • xpath.pl -- Select nodes in an XML DOM
      • doc_http.pl -- Documentation server
      • www_browser.pl -- Open a URL in the users browser
      • prolog_pack.pl -- A package manager for Prolog
      • git.pl -- Run GIT commands
      • crypt.pl
      • persistency.pl -- Provide persistent dynamic predicates
      • edinburgh.pl -- Some traditional Edinburgh predicates
      • prolog_breakpoints.pl -- Manage Prolog break-points
      • unix.pl -- Unix specific operations
      • mallocinfo.pl -- Memory allocation details
      • chr.pl
      • dicts.pl -- Dict utilities
      • dif.pl -- The dif/2 constraint
      • varnumbers.pl -- Utilities for numbered terms
      • shell.pl -- Elementary shell commands
      • uid.pl -- User and group management on Unix systems
      • syslog.pl -- Unix syslog interface
      • main.pl -- Provide entry point for scripts
      • base32.pl -- Base32 encoding and decoding
      • backcomp.pl -- Backward compatibility
      • system.pl -- System utilities
      • codesio.pl -- I/O on Lists of Character Codes
      • coinduction.pl -- Co-Logic Programming
      • date.pl -- Process dates and times
      • heaps.pl -- heaps/priority queues
      • sort.pl
      • statistics.pl -- Get information about resource usage
      • prolog_history.pl -- Per-directory persistent commandline history
      • prolog_config.pl -- Provide configuration information
      • qsave.pl -- Save current program as a state or executable
      • prolog_autoload.pl -- Autoload all dependencies
      • prolog_codewalk.pl -- Prolog code walker
      • prolog_metainference.pl -- Infer meta-predicate properties
      • check.pl -- Consistency checking
      • rdf_parser.pl
      • rewrite.pl
      • quintus.pl -- Quintus compatibility
      • sgml_write.pl -- XML/SGML writer module
      • rdf_write.pl -- Write RDF/XML from a list of triples
      • rdf.pl
      • rdf_triple.pl -- Create triples from intermediate representation
      • xsdp_types.pl -- XML-Schema primitive types
      • thread.pl -- High level thread primitives
      • readline.pl -- GNU readline interface
      • c14n2.pl -- C14n2 canonical XML documents
      • snowball.pl -- The Snowball multi-lingual stemmer library
      • double_metaphone.pl -- Phonetic string matching
      • archive.pl -- Access several archive formats
      • threadutil.pl -- Interactive thread utilities
      • pwp.pl -- Prolog Well-formed Pages
      • edit.pl -- Editor interface
      • make.pl -- Reload modified source files
      • explain.pl -- Describe Prolog Terms
      • files.pl
      • help.pl -- Text based manual
      • isub.pl -- isub: a string similarity measure
      • table.pl
      • odbc.pl
      • unicode.pl -- Unicode string handling
      • plunit.pl -- Unit Testing
      • prolog_stack.pl -- Examine the Prolog stack
      • xmldsig.pl -- XML Digital signature
      • xmlenc.pl -- XML encryption library
      • protobufs.pl -- Google's Protocol Buffers
      • streampool.pl -- Input multiplexing
      • paxos.pl -- A Replicated Data Store
      • editline.pl -- BSD libedit based command line editing
        • el_wrap/0
        • el_wrap/4
        • el_setup/1
        • el_wrapped/1
        • el_unwrap/1
        • el_source/2
        • el_bind/2
        • el_addfn/4
        • el_line/2
        • el_cursor/2
        • el_insertstr/2
        • el_deletestr/2
        • el_history/2
        • el_history_events/2
        • el_add_history/2
        • el_read_history/2
        • el_write_history/2
      • console_input.pl
      • doc_latex.pl -- PlDoc LaTeX backend
      • cgi.pl -- Read CGI parameters
      • optparse.pl -- command line parsing
      • doc_files.pl -- Create stand-alone documentation files
      • writef.pl -- Old-style formatted write
      • udp_broadcast.pl -- A UDP broadcast proxy
      • rlimit.pl
      • test_cover.pl -- Clause cover analysis
 el_addfn(+Input:stream, +Command, +Help, :Goal) is det
Add a new command to the command line editor associated with Input. Command is the name of the command, Help is the help string printed with e.g. bind -a (see el_bind/2) and Goal is called of the associated key-binding is activated. Goal is called as
call(:Goal, +Input, +Char, -Continue)

where Input is the input stream providing access to the editor, Char the activating character and Continue must be instantated with one of the known continuation codes as defined by libedit: norm, newline, eof, arghack, refresh, refresh_beep, cursor, redisplay, error or fatal. In addition, the following Continue code is provided.

electric(Move, TimeOut, Continue)
Show electric caret at Move positions to the left of the normal cursor positions for the given TimeOut. Continue as defined by the Continue value.

The registered Goal typically used el_line/2 to fetch the input line and el_cursor/2, el_insertstr/2 and/or el_deletestr/2 to manipulate the input line.

Normally el_bind/2 is used to associate the defined command with a keyboard sequence.

See also
- el_set(3) EL_ADDFN for details.