2 files changed, 16 insertions, 0 deletions
diff --git a/src/common/command_line.cpp b/src/common/command_line.cpp
index 666b3267f..d4a28fc85 100644
--- a/src/common/command_line.cpp
+++ b/src/common/command_line.cpp
@@ -78,6 +78,20 @@ namespace command_line
     return false;
   }
 
+  bool is_no(const std::string& str)
+  {
+    if (str == "n" || str == "N")
+      return true;
+
+    boost::algorithm::is_iequal ignore_case{};
+    if (boost::algorithm::equals("no", str, ignore_case))
+      return true;
+    if (boost::algorithm::equals(command_line::tr("no"), str, ignore_case))
+      return true;
+
+    return false;
+  }
+
   const arg_descriptor<bool> arg_help = {"help", "Produce help message"};
   const arg_descriptor<bool> arg_version = {"version", "Output version information"};
   const arg_descriptor<std::string> arg_data_dir = {"data-dir", "Specify data directory"};
diff --git a/src/common/command_line.h b/src/common/command_line.h
index 04fd70be5..bfc8b19c6 100644
--- a/src/common/command_line.h
+++ b/src/common/command_line.h
@@ -45,6 +45,8 @@ namespace command_line
 
   //! \return True if `str` is `is_iequal("y" || "yes" || `tr("yes"))`.
   bool is_yes(const std::string& str);
+  //! \return True if `str` is `is_iequal("n" || "no" || `tr("no"))`.
+  bool is_no(const std::string& str);
 
   template<typename T, bool required = false>
   struct arg_descriptor;