[overlay] mention filtering of unmarked messages

Author: tstack

src/field_overlay_source.cc

@@ -773,6 +773,7 @@ field_overlay_source::lss_state::from(logfile_sub_source& lss)
         lss.get_min_row_time(),
         lss.get_max_row_time(),
         lss.get_min_log_level(),
+        lss.get_marked_only(),
     };
 }
 
@@ -826,6 +827,13 @@ field_overlay_source::list_static_overlay(const listview_curses& lv,
                             .append(lnav::roles::number(fmt::to_string(hits)))
                             .append(" message(s) "));
                 }
+                if (curr_state.ls_marked_only) {
+                    msg.with_note(attr_line_t("The ")
+                                      .append_quoted(lnav::roles::keyword(
+                                          ":hide-unmarked-lines"))
+                                      .append(" command was used and no "
+                                              "unfiltered lines are marked"));
+                }
                 this->fos_static_lines = msg.to_attr_line().split_lines();
                 this->fos_static_lines_state = curr_state;
             }

src/field_overlay_source.hh

@@ -106,13 +106,15 @@ public:
         std::optional<timeval> ls_min_time;
         std::optional<timeval> ls_max_time;
         log_level_t ls_min_level{log_level_t::LEVEL_UNKNOWN};
+        bool ls_marked_only{false};
 
         friend bool operator==(const lss_state& lhs, const lss_state& rhs)
         {
             return lhs.ls_filter_generation == rhs.ls_filter_generation
                 && lhs.ls_min_time == rhs.ls_min_time
                 && lhs.ls_max_time == rhs.ls_max_time
-                && lhs.ls_min_level == rhs.ls_min_level;
+                && lhs.ls_min_level == rhs.ls_min_level
+                && lhs.ls_marked_only == rhs.ls_marked_only;
         }
 
         friend bool operator!=(const lss_state& lhs, const lss_state& rhs)