Editing

Editing

The SchemeScript editor provides mainly useful editing commands. This section summarizes those commands (some of them are also available through the editor's context menu):

Editing commands

The editor provides the following commands:

Command	Description	Default key sequences
	Movement
Forward S-expression	Moves the cursor to the end of the next S-expression.	ALT-CTRL-F
Backward S-expression	Moves the cursor to the beginning of the previous S-expression.	ALT-CTRL-B
Up	S-expression	Moves the cursor to the beginning of the enclosing S-expression.
Down	S-expression	Moves the cursor inside the next list.
Jump to Definition	When the cursor is on a symbol corresponding to a globally defined variable inside the workspace, this command jumps to the definition (which can be in another file).	F12
Find Symbol	Pops up a dialog box that asks for a symbol prefix and displays all matching symbols. (Only available in the Scheme Perspective.)	CTRL-F12
	Selection
Select Forward S-expression	Adds the next S-expression to the selection.	ALT-CTRL-SHIFT-F
Select Backward S-expression	Adds the previous S-expression to the selection.	ALT-CTRL-SHIFT-B
Select Up S-expression	Selects the enclosing S-expression.	CTRL-SHIFT-UP_ARROW
Restore the previous selection	Used in combination with the previous command. Restores the selection that was in effect before selecting the enclosing S-expression.	CTRL-SHIFT-DOWN_ARROW
	Edition
Swap S-expressions	Swaps the two S-expressions that before and after the current cursor position.	ALT-CTRL-T
Format Selection	Formats the selection, essentially properly indenting the selected lines.	CTRL-I, CTRL-SHIFT-F, TAB
Compress Spaces	Replaces all whitespace characters surrounding the cursor with a single space.	ALT-CTRL-SPACEBAR
Mouse Copy	Copies the S-expression under the mouse position at the cursor position (removing the selection, if any). See the Mouse copy section.	ALT-CTRL-C
Extended Mouse Copy	As the Mouse Copy command, but also copies the punctuation characters immediately preceding the S-expression, if any (like an opening parenthesis, a quote, an unquote, etc.). See the Mouse copy section.	ALT-CTRL-X
Backward Slurp S-expression	Move the opening parenthesis of the surrounding S-expression one expression to the left.	ALT-SHIFT-B, S
Forward Slurp S-expression	Move the closing parenthesis of the surrounding S-expression one expression to the right.	ALT-SHIFT-F, S
Split S-expression	If the cursor is positioned inside a list, the list is split into two lists.	ALT-SHIFT-S
Join S-expressions	If the cursor is positioned between two lists, the two lists are merged to form a single list	ALT-SHIFT-J
Raise S-expression	Replace the surrounding S-expression by the S-expression on the right of the cursor.	ALT-CTRL-SHIFT-R
Splice S-expression	If the cursor is positioned inside a list, the list's parentheses are removed.	CTRL-(
Wrap S-expression	Adds parentheses around the S-expression on the right of the cursor.	CTRL-(
Kill next S-expression	Removes the S-expression on the right of the cursor.	CTRL-K
Kill previous S-expression	Removes the S-expression on the left of the cursor.	CTRL-SHIFT-K
	Comments
Scheme file header comment	Insert, at the beginning of the file, a file header comment, with the author name, and a copyright notice (see the the comment section in the Scheme preferences).	ALT-C, H
Chapter comment	Insert a chapter-style comment (these comments appear in the Outline View).	ALT-C, C
Section comment	Insert a section-style comment (these comments appear in the Outline View). The section depth is determined by the number of * characters in front of the section name.	ALT-C, S
Toggle Comment	Comment out the lines in the selection (or the current line if there is no selection) or uncomment the lines if they are already commented out.	CTRL-/
	Evaluation
Start Interpreter	Starts the interpreter, if not already started. (Only available in the Scheme Perspective.)	F9
Restart Interpreter	Restarts the interpreter unconditionally, first stopping any running interpreter. (Only available in the Scheme Perspective.)	CTRL-F9
Eval Expression	Sends the previous S-expression to the Scheme interpreter, starting it if necessary.	CTRL-RETURN
Eval Toplevel Expression	Sends the enclosing top-level S-expression to the Scheme interpreter, starting it if necessary (useful when the cursor is inside a top-level definition and we want to send to definition to the interpreter).	CTRL-SHIFT-RETURN
Load File in Interpreter	Loads the current file in the Scheme interpreter, starting it if necessary.	CTRL-SHIFT-L
Fast Eval 0	Sends a predefined string to the Scheme interpreter, starting it if necessary.	ALT-k 0
Fast Eval 9	Sends a predefined string to the Scheme interpreter, starting it if necessary.	ALT-k 9
	Kawa-specific
Expand typename	Replaces the symbol located just before the cursor position by the corresponding Java fully-qualified type name, surrounded by angle brackets ().	ALT-CTRL-SHIFT-T
Expand namespace	Replaces the symbol located just before the cursor position by a define-namespace form for the corresponding fully-qualified type name.	ALT-CTRL-SHIFT-N
Insert require clause	Adds a require clause for the module that defines the symbol at the cursor position.	CTRL-SHIFT-M

Mouse copy

Mouse copy is a command used to copy S-expressions using the mouse and a key sequence. To "mouse copy" an S-expression, you must:

• put the cursor where the S-expression should be copied (or select some text),
• move the mouse over the start or end of the desired S-expression (or simply over it in the case of a string, symbol, constant, etc),
• run either the Mouse Copy or Extended Mouse Copy command (see above).