Make get_hotkey_str_first more likely to return the desired hotkey when multiple are available

Originally committed to SVN as r5508.

aegisub/libaegisub/common/hotkey.cpp

@@ -160,6 +160,18 @@ std::vector<std::string> Hotkey::GetHotkeys(const std::string &context, const st
 	return ret;
 }
 
+std::string Hotkey::GetHotkey(const std::string &context, const std::string &command) const {
+	std::string ret;
+	HotkeyMap::const_iterator it, end;
+	for (std::tr1::tie(it, end) = cmd_map.equal_range(command); it != end; ++it) {
+		std::string ctext = it->second.Context();
+		if (ctext == context) return it->second.StrMenu();
+		if (ctext == "Default") ret = it->second.StrMenu();
+		else if (ret.empty() && ctext == "Always") it->second.StrMenu();
+	}
+	return ret;
+}
+
 void Hotkey::Flush() {
 	json::Object root;
 

aegisub/libaegisub/include/libaegisub/hotkey.h

@@ -107,6 +107,12 @@ public:
 	/// @return A vector of all hotkeys for that command in the context
 	std::vector<std::string> GetHotkeys(const std::string &context, const std::string &command) const;
 
+	/// Get a string representation of a hotkeys for the given command
+	/// @param context Context requested
+	/// @param command Command name
+	/// @return A hotkey for the given command or "" if there are none
+	std::string GetHotkey(const std::string &context, const std::string &command) const;
+
 private:
 	typedef std::multimap<std::string, Combo> HotkeyMap;	///< Map to hold Combo instances.
 	HotkeyMap str_map;										///< String representation -> Combo

aegisub/src/hotkey.cpp

@@ -85,8 +85,7 @@ std::vector<std::string> get_hotkey_strs(std::string const& context, std::string
 }
 
 std::string get_hotkey_str_first(std::string const& context, std::string const& command) {
-	std::vector<std::string> strs = get_hotkey_strs(context, command);
-	return strs.empty() ? "" : strs.front();
+	return agi::hotkey::hotkey->GetHotkey(context, command);
 }