From 5935476651cd063a53d08ec33b04513a7a8127e3 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 8 Nov 2019 09:19:08 +0200
Subject: Use $regex.replace_lines() for default host config processing

---
 libbuild2/buildfile | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/libbuild2/buildfile b/libbuild2/buildfile
index 545ccba..6f368d0 100644
--- a/libbuild2/buildfile
+++ b/libbuild2/buildfile
@@ -39,14 +39,12 @@ libul{build2}: config/{hxx ixx txx cxx}{** -host-config -**.test...} \
 # let's wait and enjoy the fireworks (and get a sense of why would someone
 # need to cross-compile a build system).
 #
-newline = '
-'
 config/cxx{host-config}: config/in{host-config}
 {
-  # Remove comment lines which could be confused by some lesser compilers with
-  # preprocessor directives.
+  # Remove comment lines which could be confused with preprocessor directives
+  # by some lesser compilers.
   #
-  host_config = $regex.replace($config.export(), "#.*$newline", '')
+  host_config = $regex.replace_lines($config.export(), '^ *#.*$', [null], return_lines)
 }
 
 libul{build2}: dist/{hxx ixx txx cxx}{** -**.test...}
-- 
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