(or emacs irrelevant)

lispy 0.25.0 is out

01 Apr 2015

Seriously, check the release notes if you don't believe me.

Fixes

  • Add minibuffer-inactive-mode to the lispy-elisp-modes list. It means that you can eval there if you want.
  • V (lispy-visit) should turn on projectile-global-mode if it's not on.
  • M (lispy-multiline) works better for Clojure: the regexes for vectors, maps and sets have been improved.
  • C-k should not delete only the string when located at start of string.
  • M will not turn vectors into lists any more.
  • the backquote bug for i and M was fixed.
  • you can flatten Elisp closures as well, at least the plain ones.

New Features

b calls lispy-back

The movement commands, such as:

  • the arrows hjkl (lispy-left, lispy-down etc.)
  • f (lispy-flow)
  • q (lispy-ace-paren)
  • i (lispy-tab), only when called for an active region

will not store each movement in the point-and-mark history. You can press b to go back in history. This is especially useful for h, l, and f, since they are not trivially reversible.

b was previously bound to lispy-store-region-and-buffer, so you could do Ediff with b and B. Now it's bound to xB.

Hungry comment delete

C-d (lispy-delete) when positioned at the start of a comment, and with only whitespace before the start of the line, will delete the whole comment.

If you want to un-comment, just use C-u ; from any point in the comment.

Added flatten operation for Clojure

xf (lispy-flatten) now also works for Clojure, before it was only for Elisp.

Example 1 (flatten a macro):

|(->> [1 2 3 4 5]
     (map sqr)
     (filter odd?))

When you press xf you get this:

|(filter odd? (map sqr [1 2 3 4 5]))

Example 2 (flatten a standard function):

Start with:

|(map odd? [1 2 3 4 5])

After xf:

(let [f odd? coll [1 2 3 4 5]]
  (lazy-seq (when-let [s (seq coll)]
              (if (chunked-seq? s)
                (let [c (chunk-first s)
                      size (int (count c))
                      b (chunk-buffer size)]
                  (dotimes [i size]
                    (chunk-append b (f (.nth c i))))
                  (chunk-cons (chunk b)
                              (map f (chunk-rest s))))
                (cons (f (first s))
                      (map f (rest s)))))))

A bit of a gibberish, but at least we can confirm that map is indeed lazy.

Example 3 (flatten your own function):

Example function:

(defn sqr [x]
  (* x x))

This one requires the function to be properly loaded with C-c C-l (cider-load-file), otherwise Clojure will not know the location of the function.

Example statement:

(+ |(sqr 10) 20)

After xf:

(+ |(let [x 10]
     (* x x)) 20)

Added lax eval for Clojure

This is similar to the lax eval for Elisp. If you mark an expression with a region:

asdf [1 2 3]

and press e, you will actually eval this:

(do (def asdf [1 2 3])
    asdf)

You can do this for let bindings, it's super-useful for debugging. The rule is that if the first element of the region is a symbol, and there's more stuff in the region besides the symbol, a lax eval will be performed.

e will auto-start CIDER

If CIDER isn't live, e will start it and properly eval the current statement.

2F will search for variables first

Since Elisp is a LISP-2, there can be a function and a variable with the same name. F (lispy-follow) prefers functions, but now 2F will prefer variables.

2e will eval and insert the commented result

Starting with:

|(filter odd? (map sqr [1 2 3 4 5]))

Pressing 2e gives:

(filter odd? (map sqr [1 2 3 4 5]))
;; =>
;; (1 9 25)

This works for all dialects, so you can also have:

(symbol-function 'exit-minibuffer)
;; =>
;; (closure (t)
;;          nil "Terminate this minibuffer argument." (interactive)
;;          (setq deactivate-mark nil)
;;          (throw (quote exit)
;;            nil))

or

*MODULES*
;; =>
;; ("SWANK-ARGLISTS" "SWANK-FANCY-INSPECTOR" "SWANK-FUZZY" 
;;                   "SWANK-UTIL" "SWANK-PRESENTATIONS" 
;;                   "SWANK-TRACE-DIALOG" "SB-CLTL2")

To do the last eval you need to be in special. It means that you first have to mark the symbol *MODULES* with a region. A convenient function to mark the current symbol is M-m (lispy-mark-symbol).

y (lispy-occur) now has an ivy back end

lispy-occur launches an interactive search within the current top-level expression, usually a defun. This is useful to see where a variable is used in a function, or to quickly navigate to a statement.

You can customize lispy-occur-backend to either ivy (the default) or helm (if you have it, since it's no longer a dependency of lispy).

Add ivy back end to lispy-completion-method

Now it's the default one for navigating to tags. You can select alternatively helm or ido if you wish.

Remove the dependency on ace-jump-mode

Instead the dependency on ace-window will be re-used. This allows for a lot of code simplifications and better tests.

New custom variables:

  • lispy-avy-style-char: choose where the overlay appears for Q (lispy-ace-char)
  • lispy-avy-style-paren: choose where the overlay appears for q (lispy-ace-paren)
  • lispy-avy-style-symbol: choose where the overlay appears for a (lispy-ace-symbol) and - (lispy-ace-subword) and H (ace-symbol-replace).

There's also lispy-avy-keys, which is a ... z by default.

Add lispy-compat

This is a list of compatibility features with other packages, such as edebug and god-mode. They add overhead, so you might want to turn them off if you don't use the mentioned packages.

F works for Scheme

You can navigate to a symbol definition in Scheme with F. This feature was already in place for Elisp, Clojure and CL.

Outro

Looks like a great batch of features, but I'm the most happy about the stupid backquote bug being fixed.

Up next: pre-defined key binding themes, featuring:

  • the beloved default.
  • the old-school paredit.
  • the special-only minimal.
  • and maybe one more.

Feel free to chime in, if you've got a key setup that you think other people will like. Happy hacking!