From 921c2d503a63f4769fdf1c7e6eb31be2706f9bea Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 15 Oct 2020 14:20:44 +0200
Subject: Add ability to specify fallback value for NULL substitutions with
 in.null

---
 libbuild2/bash/rule.cxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'libbuild2/bash/rule.cxx')

diff --git a/libbuild2/bash/rule.cxx b/libbuild2/bash/rule.cxx
index 148da95..9fc89d7 100644
--- a/libbuild2/bash/rule.cxx
+++ b/libbuild2/bash/rule.cxx
@@ -195,11 +195,12 @@ namespace build2
                 action a,
                 const target& t,
                 const string& n,
-                bool strict) const
+                bool strict,
+                const optional<string>& null) const
     {
       return n.compare (0, 6, "import") == 0 && (n[6] == ' ' || n[6] == '\t')
         ? substitute_import (l, a, t, trim (string (n, 7)))
-        : rule::substitute (l, a, t, n, strict);
+        : rule::substitute (l, a, t, n, strict, null);
     }
 
     string in_rule::
-- 
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