2014-01-21: simpler match and example.

simpler match and example.

diff --git a/tests/syntax-colon.w b/tests/syntax-colon.w
--- a/tests/syntax-colon.w
+++ b/tests/syntax-colon.w
@@ -23,7 +23,7 @@ let
 let : : a ' :
 
 let 
-  :   
+  :    ; foo
     a
       '
 
diff --git a/wisp-guile.w b/wisp-guile.w
--- a/wisp-guile.w
+++ b/wisp-guile.w
@@ -476,7 +476,7 @@ If line is indented and only contains : 
 
 The line *must* have a whitespace after the prefix, except if the prefix is the only non-whitespace on the line."
     ; if the line only contains a colon, we just replace its content with an opening paren.
-    if : string-match "^: *$" : line-content line ; FIXME: Check for this somewhere else.
+    if : equal? ":" : string-trim-right : line-content line ; FIXME: Check for this somewhere else.
          list 
              line-indent line
              string-append "(" : string-drop (line-content line) 1 ; keep whitespace