4.4.1 Customizing the editor interface
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prolog_edit:edit_command(+Editor, -Command)
Determines how Editor is to be invoked using shell/1. Editor is the determined editor (see prolog_edit:edit_source/1), without the full path specification, and without a possible (.exe) extension. Command is an atom describing the command. The following %-sequences are replaced in Command before the result is handed to shell/1:

%eReplaced by the (OS) command name of the editor
%fReplaced by the (OS) full path name of the file
%dReplaced by the line number

If the editor can deal with starting at a specified line, two clauses should be provided. The first pattern invokes the editor with a line number, while the second is used if the line number is unknown.

The default contains definitions for vi, emacs, emacsclient, vim, notepad^* and wordpad^*. Starred editors do not provide starting at a given line number.

Please contribute your specifications to bugs@swi-prolog.org.