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-rw-r--r--libbuild2/build/script/runner.hxx6
1 files changed, 6 insertions, 0 deletions
diff --git a/libbuild2/build/script/runner.hxx b/libbuild2/build/script/runner.hxx
index db211df..431c446 100644
--- a/libbuild2/build/script/runner.hxx
+++ b/libbuild2/build/script/runner.hxx
@@ -50,6 +50,12 @@ namespace build2
leave (environment&, const location&) = 0;
};
+ // Run command expressions.
+ //
+ // In dry-run mode don't run the expressions unless they are if-
+ // conditions or execute the set or exit builtins, but prints them at
+ // verbosity level 2 and up.
+ //
class default_runner: public runner
{
public: