1 files changed, 7 insertions, 0 deletions
diff --git a/cppawk.1 b/cppawk.1
index 9aed0b5..3253d09 100644
--- a/cppawk.1
+++ b/cppawk.1
@@ -90,6 +90,13 @@ Pretend that the shell which executes
 isn't GNU Bash, even if it is. This has the effect of disabling
 the use of process substitution in favor of the use of a temporary file.
 
+.IP "\fB\-\-dump-macros\fR"
+Instruct the preprocessor to dump all of the
+.BI #define
+directives instead of the preprocessed output. Since this is only useful with
+.BI --prepro-only
+that option is implied.
+
 .IP "\fB\-M\fR, \fB\--bignum\fR"
 These two equivalent GNU Awk options are passed through to
 .BR awk ,