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| ANSI Common Lisp 25 Environment 25.2 Dictionary of Environment
25.2.17 ed | Function
Syntax: ed `&optional` x implementation-dependent Arguments and Values: x - nil, a pathname, a string, or a function name. The default is nil. Description: ed invokes the editor if the implementation provides a resident editor. If x is nil, the editor is entered. If the editor had been previously entered, its prior state is resumed, if possible. If x is a pathname or string, it is taken as the pathname designator for a file to be edited. If x is a function name, the text of its definition is edited. The means by which the function text is obtained is implementation-defined. Exceptional Situations: The consequences are undefined if the implementation does not provide a resident editor. Might signal type-error if its argument is supplied but is not a symbol, a pathname, or nil. If a failure occurs when performing some operation on the file system while attempting to edit a file, an error of type file-error is signaled. An error of type file-error might be signaled if x is a designator for a wild pathname. Implementation-dependent additional conditions might be signaled as well. See Also: pathname, logical-pathname, compile-file, load, Section 19.1.2 Pathnames as Filenames Allegro CL Implementation Details: None.

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