Add @ (deref) to the expression breaking chars.

It was missing, but it is actually used for identifying completions bounds.

Author: arichiardi

CHANGELOG.md

@@ -21,6 +21,7 @@
 * [#119](https://github.com/clojure-emacs/inf-clojure/pull/119): Set inf-clojure-buffer REPL type on detect.
 * [#120](https://github.com/clojure-emacs/inf-clojure/pull/120): Send REPL string always, even if empty.
 * [#128](https://github.com/clojure-emacs/inf-clojure/pull/128): Fix inf-clojure-apropos.
+* [#129](https://github.com/clojure-emacs/inf-clojure/pull/129): Add `@` (deref) to the expression breaking chars.
 
 ## 2.0.1 (2017-05-18)
 

inf-clojure.el

@@ -1318,7 +1318,7 @@ you might want to use in your customization."
   :safe #'functionp
   :package-version '(inf-clojure . "2.1.0"))
 
-(defconst inf-clojure-clojure-expr-break-chars " \t\n\"\'`><,;|&{()[]")
+(defconst inf-clojure-clojure-expr-break-chars " \t\n\"\'`><,;|&{()[]@")
 
 (defun inf-clojure-completion-bounds-of-expr-at-point ()
   "Return bounds of expression at point to complete."