Add test for issue #141

Also some comment/whitespace cleanup

Author: takikawa

tests/unit-tests.rkt

@@ -6,7 +6,7 @@
 ;;   - Add a new comment block explaining the test (include issue#, etc)
 ;;   - Add `check-vim` (or `check-vim-not-exn`) tests
 ;;   - check-vim takes a before string, a list of keys, and after string
-;;   - Use @~a{ ... } notation to write contents of text buffer for 
+;;   - Use @~a{ ... } notation to write contents of text buffer for tests
 ;;     (this is at-expression syntax, detailed here:
 ;;      https://docs.racket-lang.org/scribble/reader.html)
 
@@ -391,6 +391,14 @@
  '(#\d #\a #\w)
  @~a{def ghi})
 
+;; Issue #141
+(check-vim
+ @~a{abc
+     def}
+ '(#\l #\l #\d #\w)
+ @~a{ab
+     def})
+
 (check-vim
  @~a{abc
      def}
@@ -422,7 +430,6 @@
  '(#\l #\d #\w)
  @~a{adef ghi})
 
-
 (check-vim
  @~a{#lang racket}
  '(#\d escape #\d)