[Fix #445] More accurate font locking for strings in def forms

- def forms can now have docstrings and strings properly font-locked
- they will not be incorrectly indented

added tests as well

Author: Carlos Requena López

clojure-mode-font-lock-test.el

@@ -718,6 +718,34 @@ POS."
   (should (eq (clojure-test-face-at 6 8 "(def foo 10)")
               'font-lock-variable-name-face)))
 
+(ert-deftest clojure-mode-syntax-table/variable-def-string ()
+  :tags '(fontification syntax-table)
+  (should (eq (clojure-test-face-at 10 16 "(def foo \"hello\")")
+              'font-lock-string-face))
+  (should (eq (clojure-test-face-at 10 16 "(def foo \"hello\"   )")
+              'font-lock-string-face))
+  (should (eq (clojure-test-face-at 13 19 "(def foo \n  \"hello\")")
+              'font-lock-string-face))
+  (should (eq (clojure-test-face-at 13 19 "(def foo \n  \"hello\"\n)")
+              'font-lock-string-face)))
+
+(ert-deftest clojure-mode-syntax-table/variable-def-string-with-docstring ()
+  :tags '(fontification syntax-table)
+  (should (eq (clojure-test-face-at 10 16 "(def foo \"usage\" \"hello\")")
+              'font-lock-doc-face))
+  (should (eq (clojure-test-face-at 18 24 "(def foo \"usage\" \"hello\")")
+              'font-lock-string-face))
+  (should (eq (clojure-test-face-at 18 24 "(def foo \"usage\" \"hello\"   )")
+              'font-lock-string-face))
+  (should (eq (clojure-test-face-at 21 27 "(def foo \"usage\" \n  \"hello\")")
+              'font-lock-string-face))
+  (should (eq (clojure-test-face-at 13 19 "(def foo \n  \"usage\" \"hello\")")
+              'font-lock-doc-face))
+  (should (eq (clojure-test-face-at 13 19 "(def foo \n  \"usage\" \n  \"hello\")")
+              'font-lock-doc-face))
+  (should (eq (clojure-test-face-at 24 30 "(def foo \n  \"usage\" \n  \"hello\")")
+              'font-lock-string-face)))
+
 (ert-deftest clojure-mode-syntax-table/type-def ()
   :tags '(fontification syntax-table)
   (clojure-test-with-temp-buffer "(deftype Foo)"

clojure-mode-indentation-test.el

@@ -68,6 +68,7 @@ values of customisable variables."
            (search-forward "|")
            (delete-char -1)
            (clojure-mode)
+           (font-lock-ensure)
            (indent-according-to-mode)
 
            (should (equal expected-state (buffer-string)))
@@ -118,6 +119,10 @@ values of customisable variables."
 (->>
  |expr)")
 
+(check-indentation no-indent-for-def-string
+  "(def foo \"hello|\")"
+  "(def foo \"hello|\")")
+
 (check-indentation doc-strings-without-indent-specified
   "
 (defn some-fn