2 files changed, 16 insertions, 0 deletions
diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 9540720fe240..2d26fc66dafe 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -966,6 +966,17 @@ Strings tokenizeString(const string & s, const string & separators)
 }
 
 
+string concatStringsSep(const string & sep, const Strings & ss)
+{
+    string s;
+    foreach (Strings::const_iterator, i, ss) {
+        if (s.size() != 0) s += sep;
+        s += *i;
+    }
+    return s;
+}
+
+
 string statusToString(int status)
 {
     if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index c45ebc062ffa..27ad46904958 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -280,6 +280,11 @@ MakeError(Interrupted, BaseError)
 Strings tokenizeString(const string & s, const string & separators = " \t\n\r");
 
 
+/* Concatenate the given strings with a separator between the
+   elements. */
+string concatStringsSep(const string & sep, const Strings & ss);
+
+
 /* Convert the exit status of a child as returned by wait() into an
    error string. */
 string statusToString(int status);