Fix cli distribution via group

1 files changed, 4 insertions, 3 deletions

diff --git a/build2/algorithm b/build2/algorithm
index 2fa9fe4..dfe8c42 100644
--- a/build2/algorithm
+++ b/build2/algorithm
@@ -162,12 +162,13 @@ namespace build2
 
   // Match a "delegate rule" from withing another rules' apply() function
   // avoiding recursive matches (thus the third argument). Return recipe and
-  // recipe action (if any). Note that unlike match(), this call doesn't
-  // increment the dependents count. See also the companion
+  // recipe action (if any). Unless fail is false, fail if not rule is found.
+  // Otherwise return empty recipe. Note that unlike match(), this function
+  // does not increment the dependents count. See also the companion
   // execute_delegate().
   //
   pair<recipe, action>
-  match_delegate (action, target&, const rule&);
+  match_delegate (action, target&, const rule&, bool fail = true);
 
   // The standard prerequisite search and match implementations. They call
   // search() and then match() for each prerequisite in a loop omitting out of