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ANSI Common Lisp  25 Environment 25.2 Dictionary of Environment
- 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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