To use Edwin, start Scheme with the following command-line options:
Alternatively, you can load Edwin by giving the --edwin
command-line option and then calling the procedure
Enter the Edwin text editor. If entering for the first time, the editor is initialized (by calling
create-editorwith no arguments). Otherwise, the previously-initialized editor is reentered.
edwinis an alias for
When Edwin is first initialized, it loads your init file (called ~/.edwin under unix, edwin.ini on PCs) if you have one. If the Scheme variable
inhibit-editor-init-file?is true, however, your init file will not be loaded even if it exists. By default, this variable is false.
Note that you can set this variable in your Scheme init file (see Customizing Scheme).
Initializes Edwin, or reinitializes it if already initialized.
create-editoris normally invoked automatically by
If no args are given, the value of
create-editor-argsis used instead. In other words, the following are equivalent:(create-editor) (apply create-editor create-editor-args)
On the other hand, if args are given, they are used to update
create-editor-args, making the following equivalent:(apply create-editor args) (begin (set! create-editor-args args) (create-editor))
This variable controls the initialization of Edwin. The following values are defined:
- This is the default. Creates a window of some default size, and uses that window as Edwin's main window. Under unix, if X11 is not available or if the DISPLAY environment variable is undefined, Edwin will run on Scheme's console.
- Unix only. Creates an X window and uses it as Edwin's main window. This requires the DISPLAY environment variable to have been set to the appropriate value before Scheme was started.
- Unix only. Like `(x)' except that geometry specifies the window's geometry in the usual way. Geometry must be a character string whose contents is an X geometry specification.
- Unix only. Causes Edwin to run on Scheme's console, or in unix terminology, the standard input and output. If the console is not a terminal device, or is not powerful enough to run Edwin, an error will be signalled at initialization time.
- Windows only. Creates a window and uses it as Edwin's main window.