[ng] cosmetics: fix an imprecise comment

* lib/am/header-vars.am (am__empty): About this.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/lib/am/header-vars.am b/lib/am/header-vars.am
index ad966918eb9126315680b01f149993be9d091186..c6ad4d355e78b87b2876aa16832e7fd118e9f629 100644 (file)
--- a/lib/am/header-vars.am
+++ b/lib/am/header-vars.am
@@ -143,8 +143,9 @@ am__make_dryrun := \
         $(findstring n,$(am__v))))), \
     true, false))
 
-# An empty strings.  It only serves to make the code readable
-# in some places.
+# An empty string.  It can be very useful to "fool" the make parser w.r.t.
+# whitespace handling, and allow us to obtain tricky semantics.  See the
+# definition of $(am__newline) below for a significant example.
 am__empty :=
 
 am__strip_firstword = $(wordlist 2,$(words $(1)),$(1))