list-edit package

List-edit provides list-aware cut, copy, and paste operations that automatically handle separators and whitespace, while taking into account strings and comments. For example, to cut the first element from [Three, One, Two] and paste it at the end:

On list-cut the list element that contains the cursor is removed, together with its trailing separator and whitespace. After moving the cursor past the last element, list-paste inserts the cut element and puts a separator and whitespace in front of it. List-edit also works in a vertical layout and on multiple elements:

And even between different lists (with yet another layout):

List-edit uses the grammar of the edited file to ignore strings and comments, but list detection takes place purely on a lexical level. Currently, {}, [], and () are brackets, and , and ; are separators.

For more information, including a small emulator, in which you can try out the package, visit list-edit.oblomov.com.

Key bindings (Mac)

Keys	Command
alt-cmd-s	list-select	Select element at cursor, or range of elements in selection
alt-cmd-x	list-cut	Cut elements (and separator+whitespace) at cursor/selection
alt-cmd-c	list-copy	Copy elements at cursor/selection to the clipboard
alt-cmd-v	list-paste	Paste elements (and separator+whitespace) at cursor/selection

Windows and Linux key bindings use ctrl-alt instead of alt-cmd.