diff --git a/moo/configure b/moo/configure
index ea52163..6683419 100755
--- a/moo/configure
+++ b/moo/configure
@@ -19981,7 +19981,6 @@ _ACEOF
 moo_cv_path_max="`$ac_cv_prog_CPP conftest.c | awk '/;;;;;;;;;;/ { start=1 } /^(0|1|2|3|4|5|6|7|8|9)(0|1|2|3|4|5|6|7|8|9)*/ { if (start == 1) { print $0; start++; } }'`"
 if test "x${moo_cv_path_max}" = "x"
 then
-	dcl either not defined or defined to a non-numeric value
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: not defined" >&5
 $as_echo "not defined" >&6; }
 else
diff --git a/moo/configure.ac b/moo/configure.ac
index dc95eed..b965ced 100644
--- a/moo/configure.ac
+++ b/moo/configure.ac
@@ -254,6 +254,7 @@ AC_TRY_RUN(
 )
 
 dnl check the defined value of PATH_MAX in limits.h
+dnl look for a numeric value of 2 or more digits after preprocessing.
 AC_MSG_CHECKING([for PATH_MAX])
 AC_LANG_CONFTEST([
 	AC_LANG_PROGRAM(
@@ -264,7 +265,7 @@ PATH_MAX])
 moo_cv_path_max="`$ac_cv_prog_CPP conftest.c | awk '/;;;;;;;;;;/ { start=1 } /^(0|1|2|3|4|5|6|7|8|9)(0|1|2|3|4|5|6|7|8|9)*/ { if (start == 1) { print $0; start++; } }'`"
 if test "x${moo_cv_path_max}" = "x"
 then
-	dcl either not defined or defined to a non-numeric value
+	dnl either not defined or defined to a non-numeric value
 	AC_MSG_RESULT(not defined)
 else
 	AC_MSG_RESULT(${moo_cv_path_max})
diff --git a/moo/lib/moo-opt.h b/moo/lib/moo-opt.h
index 478c7a3..1680894 100644
--- a/moo/lib/moo-opt.h
+++ b/moo/lib/moo-opt.h
@@ -63,8 +63,6 @@ struct moo_uopt_t
 	moo_uch_t*       cur;
 };
 
-
-
 typedef struct moo_bopt_t moo_bopt_t;
 typedef struct moo_bopt_lng_t moo_bopt_lng_t;