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![]() | Using PceEmacs |
The XPCE GUI tool for Prolog comes with a built-in emacs clone written in Prolog. Its Prolog mode does proper indentation, full syntax checking by calling the SWI-Prolog parser, warning for singleton variables and finding predicate definitions based on the source-information from the Prolog database. Syntax colouring of clause heads and goals is based on information from the cross-referencer.
Both syntax checking and singleton warnings are generated for the clause in which the caret appears after every keystroke. Global analysis of the file is done after a shot idle time or after typing C-l (control+L).