$NetBSD: patch-libguile_guile-snarf-docs.in,v 1.1 2022/03/07 20:34:16 wiz Exp $

--- libguile/guile-snarf-docs.in.orig	2013-09-29 06:57:32.000000000 +0000
+++ libguile/guile-snarf-docs.in
@@ -23,4 +23,5 @@ bindir=`dirname $0`
 ## Let the user override the preprocessor autoconf found.
 test -n "${CPP+set}" || CPP="@CPP@"
 
-${CPP} -DSCM_MAGIC_SNARF_DOCS "$@"
+${CPP} -DSCM_MAGIC_SNARF_DOCS "$@" | grep -v '^#' | sed 's,\^ *\^ {,\
+&,g'