Add get_color helper function

src/color_registry.hh

@@ -22,6 +22,11 @@ private:
     std::unordered_map<String, ColorPair>    m_aliases;
 };
 
+inline const ColorPair& get_color(const String& colordesc)
+{
+    return ColorRegistry::instance()[colordesc];
+}
+
 }
 
 #endif // color_registry_hh_INCLUDED

src/commands.cc

@@ -684,8 +684,7 @@ void info(const CommandParameters& params, Context& context)
             pos = context.window().display_position(it);
         }
         const String& message = parser.has_option("assist") ? assist(parser[0], dimensions.column) : parser[0];
-        ColorPair colors = ColorRegistry::instance()["Information"];
-        context.ui().info_show(message, pos, colors, style);
+        context.ui().info_show(message, pos, get_color("Information"), style);
     }
 }
 

src/highlighters.cc

@@ -135,7 +135,7 @@ HighlighterAndId colorize_regex_factory(const HighlighterParameters params, cons
 
             int capture = str_to_int(String(res[1].first, res[1].second));
             const ColorPair*& color = colors[capture];
-            color = &ColorRegistry::instance()[String(res[2].first, res[2].second)];
+            color = &get_color(String(res[2].first, res[2].second));
         }
 
         String id = "colre'" + params[0] + "'";
@@ -185,7 +185,7 @@ HighlighterAndId highlight_search_factory(const HighlighterParameters params, co
         throw runtime_error("wrong parameter count");
     try
     {
-        ColorSpec colors { { 0, &ColorRegistry::instance()[params[0]] } };
+        ColorSpec colors { { 0, &get_color(params[0]) } };
         auto get_regex = []{
             auto s = RegisterManager::instance()['/'].values(Context{});
             return s.empty() ? Regex{} : Regex{s[0].begin(), s[0].end()};
@@ -203,7 +203,7 @@ HighlighterAndId highlight_regex_option_factory(const HighlighterParameters para
     if (params.size() != 2)
         throw runtime_error("wrong parameter count");
 
-    ColorSpec colors { { 0, &ColorRegistry::instance()[params[1]] } };
+    ColorSpec colors { { 0, &get_color(params[1]) } };
     String option_name = params[0];
     const OptionManager& options = window.options();
     // verify option type now
@@ -266,7 +266,7 @@ void show_line_numbers(DisplayBuffer& display_buffer)
 
     char format[] = "%?d ";
     format[1] = '0' + digit_count;
-    auto& colors = ColorRegistry::instance()["LineNumbers"];
+    auto& colors = get_color("LineNumbers");
     for (auto& line : display_buffer.lines())
     {
         char buffer[10];
@@ -290,11 +290,11 @@ void highlight_selections(const Window& window, DisplayBuffer& display_buffer)
         const bool primary = (i == window.main_selection_index());
         if (not only_cursor)
         {
-            ColorPair sel_colors = ColorRegistry::instance()[primary ? "PrimarySelection" : "SecondarySelection"];
+            ColorPair sel_colors = get_color(primary ? "PrimarySelection" : "SecondarySelection");
             highlight_range(display_buffer, begin, end, false,
                             [&](DisplayAtom& atom) { atom.colors = sel_colors; });
         }
-        ColorPair cur_colors = ColorRegistry::instance()[primary ? "PrimaryCursor" : "SecondaryCursor"];
+        ColorPair cur_colors = get_color(primary ? "PrimaryCursor" : "SecondaryCursor");
         highlight_range(display_buffer, sel.last(), utf8::next(sel.last()), false,
                         [&](DisplayAtom& atom) { atom.colors = cur_colors; });
     }

src/input_handler.cc

@@ -154,9 +154,8 @@ public:
           m_selected(m_choices.begin())
     {
         DisplayCoord menu_pos{ context().ui().dimensions().line, 0_char };
-        ColorRegistry& colreg = ColorRegistry::instance();
-        context().ui().menu_show(choices, menu_pos, colreg["MenuForeground"],
-                                 colreg["MenuBackground"], MenuStyle::Prompt);
+        context().ui().menu_show(choices, menu_pos, get_color("MenuForeground"),
+                                 get_color("MenuBackground"), MenuStyle::Prompt);
     }
 
     void on_key(const Key& key) override
@@ -378,9 +377,8 @@ public:
 
                 context().ui().menu_hide();
                 DisplayCoord menu_pos{ context().ui().dimensions().line, 0_char };
-                ColorRegistry& colreg = ColorRegistry::instance();
-                context().ui().menu_show(candidates, menu_pos, colreg["MenuForeground"],
-                                         colreg["MenuBackground"], MenuStyle::Prompt);
+                context().ui().menu_show(candidates, menu_pos, get_color("MenuForeground"),
+                                         get_color("MenuBackground"), MenuStyle::Prompt);
 
                 bool use_common_prefix = context().options()["complete_prefix"].get<bool>();
                 String prefix = use_common_prefix ? common_prefix(candidates) : String();
@@ -608,10 +606,9 @@ private:
     {
         DisplayCoord menu_pos = m_context.window().display_position(m_completions.begin);
 
-        ColorRegistry& colreg = ColorRegistry::instance();
         m_context.ui().menu_show(m_matching_candidates, menu_pos,
-                                 colreg["MenuForeground"],
-                                 colreg["MenuBackground"],
+                                 get_color("MenuForeground"),
+                                 get_color("MenuBackground"),
                                  MenuStyle::Inline);
         m_context.ui().menu_select(m_current_candidate);
     }