[view_curses] support for selecting text in mouse mode

NEWS.md

@@ -15,8 +15,13 @@ Features:
   mouse inputs:
   - clicking on the main view will move the cursor to the given
     row and dragging will scroll the view as needed;
-  - shift + dragging in the main view will highlight lines and
-    then toggle their bookmark status on release;
+  - shift + clicking/dragging in the main view will highlight
+    lines and then toggle their bookmark status on release;
+  - double-clicking will select the underlying token and
+    drag-selecting within a line will select the given text;
+  - when text is selected: pressing `c` will copy the text to
+    the clipboard; the text will be used as the suggestion for
+    searching/filtering;
   - clicking in the scroll area will move the view by a page and
     dragging the scrollbar will move the view to the given spot;
   - clicking on the breadcrumb bar will select a crumb and
@@ -31,6 +36,10 @@ Features:
     clicking the diamond will enable/disable the file/filter);
   - clicking in a prompt will move the cursor to the location.
   This is new work, so there are likely to be some glitches.
+* Added a `selected_text` column to the `lnav_views` table that
+  reports information about text that was selected with a mouse.
+  This makes it possible to script operations that use the
+  selected text as an input.
 
 Interface changes:
 * The bar charts in the DB view have now been moved to their

docs/schemas/config-v1.schema.json

@@ -305,6 +305,11 @@
                                             "title": "/ui/theme-defs/<theme_name>/styles/text",
                                             "$ref": "#/definitions/style"
                                         },
+                                        "selected-text": {
+                                            "description": "Styling for text selected in a view",
+                                            "title": "/ui/theme-defs/<theme_name>/styles/selected-text",
+                                            "$ref": "#/definitions/style"
+                                        },
                                         "alt-text": {
                                             "description": "Styling for plain text when alternating",
                                             "title": "/ui/theme-defs/<theme_name>/styles/alt-text",

docs/source/intro.rst

@@ -144,8 +144,13 @@ mouse inputs:
 
 * clicking on the main view will move the cursor to the given
   row and dragging will scroll the view as needed;
-* shift + dragging in the main view will highlight lines and
-  then toggle their bookmark status on release;
+* shift + clicking/dragging in the main view will highlight
+  lines and then toggle their bookmark status on release;
+* double-clicking will select the underlying token and
+  drag-selecting within a line will select the given text;
+* with selected text, pressing :kbd:`c` will copy the text to
+  the clipboard and it will be used as the suggestion for
+  searching/filtering;
 * clicking in the scroll area will move the view by a page and
   dragging the scrollbar will move the view to the given spot;
 * clicking on the breadcrumb bar will select a crumb and

src/base/intern_string.cc

@@ -387,6 +387,43 @@ string_fragment::codepoint_to_byte_index(ssize_t cp_index) const
     return Ok(retval);
 }
 
+string_fragment
+string_fragment::sub_cell_range(int cell_start, int cell_end) const
+{
+    int byte_index = this->sf_begin;
+    nonstd::optional<int> byte_start;
+    nonstd::optional<int> byte_end;
+    int cell_index = 0;
+
+    while (byte_index < this->sf_end) {
+        if (cell_start == cell_index) {
+            byte_start = byte_index;
+        }
+        if (cell_index == cell_end) {
+            byte_end = byte_index;
+        }
+        auto read_res = ww898::utf::utf8::read(
+            [this, &byte_index]() { return this->sf_string[byte_index++]; });
+        if (read_res.isErr()) {
+            byte_index += 1;
+        } else {
+            cell_index += wcwidth(read_res.unwrap());
+        }
+    }
+    if (cell_start == cell_index) {
+        byte_start = byte_index;
+    }
+    if (!byte_end) {
+        byte_end = byte_index;
+    }
+
+    if (byte_start && byte_end) {
+        return this->sub_range(byte_start.value(), byte_end.value());
+    }
+
+    return string_fragment{};
+}
+
 size_t
 string_fragment::column_width() const
 {

src/base/intern_string.hh

@@ -178,6 +178,8 @@ struct string_fragment {
     Result<ssize_t, const char*> codepoint_to_byte_index(
         ssize_t cp_index) const;
 
+    string_fragment sub_cell_range(int cell_start, int cell_end) const;
+
     const char& operator[](int index) const
     {
         return this->sf_string[sf_begin + index];
@@ -281,6 +283,12 @@ struct string_fragment {
             this->sf_string, this->sf_begin + begin, this->sf_begin + end};
     }
 
+    bool contains(const string_fragment& sf) const
+    {
+        return this->sf_string == sf.sf_string && this->sf_begin <= sf.sf_begin
+            && sf.sf_end <= this->sf_end;
+    }
+
     size_t count(char ch) const
     {
         size_t retval = 0;

src/base/string_attr_type.hh

@@ -136,6 +136,7 @@ enum class role_t : int32_t {
     VCR_TYPE,
     VCR_SEP_REF_ACC,
     VCR_SUGGESTION,
+    VCR_SELECTED_TEXT,
 
     VCR__MAX
 };

src/filter_sub_source.cc

@@ -434,9 +434,12 @@ filter_sub_source::rl_change(readline_curses* rc)
             break;
         case filter_lang_t::REGEX: {
             if (new_value.empty()) {
-                if (fs.get_filter(top_view->get_current_search()) == nullptr) {
-                    this->fss_editor->set_suggestion(
-                        top_view->get_current_search());
+                auto sugg = top_view->get_current_search();
+                if (top_view->tc_selected_text) {
+                    sugg = top_view->tc_selected_text->sti_value;
+                }
+                if (fs.get_filter(sugg) == nullptr) {
+                    this->fss_editor->set_suggestion(sugg);
                 }
             } else {
                 auto regex_res

src/keymaps/default-keymap.json

@@ -114,7 +114,7 @@
                     "alt-msg": "${keymap_def_alt_hour_boundary}"
                 },
                 "x63": {
-                    "command": ":write-to /dev/clipboard",
+                    "command": "|lnav-copy-text",
                     "alt-msg": "${keymap_def_clear}"
                 },
                 "x67": {

src/lnav_commands.cc

@@ -2447,6 +2447,10 @@ com_filter_prompt(exec_context& ec, const std::string& cmdline)
         return {};
     }
 
+    if (tc->tc_selected_text) {
+        return {"", tc->tc_selected_text->sti_value};
+    }
+
     return {"", tc->get_current_search()};
 }
 
@@ -5899,11 +5903,11 @@ com_prompt(exec_context& ec,
         auto split_args_res = lexer.split(ec.create_resolver());
         if (split_args_res.isErr()) {
             auto split_err = split_args_res.unwrapErr();
-            auto um = lnav::console::user_message::error(
-                          "unable to parse file name")
-                          .with_reason(split_err.te_msg)
-                          .with_snippet(lnav::console::snippet::from(
-                              SRC, lexer.to_attr_line(split_err)));
+            auto um
+                = lnav::console::user_message::error("unable to parse prompt")
+                      .with_reason(split_err.te_msg)
+                      .with_snippet(lnav::console::snippet::from(
+                          SRC, lexer.to_attr_line(split_err)));
 
             return Err(um);
         }

src/lnav_config.cc

@@ -630,6 +630,10 @@ static const struct json_path_container theme_styles_handlers = {
         .with_description("Styling for plain text")
         .for_child(&lnav_theme::lt_style_text)
         .with_children(style_config_handlers),
+    yajlpp::property_handler("selected-text")
+        .with_description("Styling for text selected in a view")
+        .for_child(&lnav_theme::lt_style_selected_text)
+        .with_children(style_config_handlers),
     yajlpp::property_handler("alt-text")
         .with_description("Styling for plain text when alternating")
         .for_child(&lnav_theme::lt_style_alt_text)

src/readline_callbacks.cc

@@ -194,7 +194,7 @@ rl_sql_help(readline_curses* rc)
 {
     auto al = attr_line_t(rc->get_line_buffer());
     const auto& sa = al.get_attrs();
-    size_t x = rc->get_x();
+    size_t x = rc->get_cursor_x();
     bool has_doc = false;
 
     if (x > 0) {
@@ -308,6 +308,12 @@ rl_change(readline_curses* rc)
     lnav_data.ld_user_message_source.clear();
 
     switch (lnav_data.ld_mode) {
+        case ln_mode_t::SEARCH: {
+            if (rc->get_line_buffer().empty() && tc->tc_selected_text) {
+                rc->set_suggestion(tc->tc_selected_text->sti_value);
+            }
+            break;
+        }
         case ln_mode_t::SQL: {
             static const auto* sql_cmd_map
                 = injector::get<readline_context::command_map_t*,
@@ -563,7 +569,7 @@ rl_search_internal(readline_curses* rc, ln_mode_t mode, bool complete = false)
                 auto orig_prql_stmt = attr_line_t(term_val);
                 orig_prql_stmt.rtrim("| \r\n\t");
                 annotate_sql_statement(orig_prql_stmt);
-                auto cursor_x = rc->get_x();
+                auto cursor_x = rc->get_cursor_x();
                 if (cursor_x > orig_prql_stmt.get_string().length()) {
                     cursor_x = orig_prql_stmt.length() - 1;
                 }

src/readline_curses.cc

@@ -933,6 +933,8 @@ readline_curses::start()
 
     maxfd = std::max(STDIN_FILENO, this->rc_command_pipe[RCF_SLAVE].get());
 
+    static uint64_t last_h1, last_h2;
+
     while (looping) {
         fd_set ready_rfds;
         int rc;
@@ -951,8 +953,6 @@ readline_curses::start()
             }
         } else {
             if (FD_ISSET(STDIN_FILENO, &ready_rfds)) {
-                static uint64_t last_h1, last_h2;
-
                 struct itimerval itv;
 
                 itv.it_value.tv_sec = 0;
@@ -960,7 +960,6 @@ readline_curses::start()
                 itv.it_interval.tv_sec = 0;
                 itv.it_interval.tv_usec = 0;
                 setitimer(ITIMER_REAL, &itv, nullptr);
-
                 rl_callback_read_char();
                 if (RL_ISSTATE(RL_STATE_DONE) && !got_line) {
                     got_line = 1;
@@ -969,6 +968,7 @@ readline_curses::start()
                 } else {
                     uint64_t h1 = 1, h2 = 2;
 
+                    rc_local_suggestion.clear();
                     if (rl_last_func == readline_context::command_complete) {
                         rl_last_func = rl_menu_complete;
                     }
@@ -1304,7 +1304,6 @@ readline_curses::check_poll_set(const std::vector<struct pollfd>& pollfds)
         if (rc > 0) {
             int old_x = this->vc_cursor_x;
 
-            this->rc_suggestion.clear();
             this->map_output(buffer, rc);
             if (this->vc_cursor_x != old_x) {
                 this->rc_change(this);
@@ -1389,7 +1388,7 @@ readline_curses::check_poll_set(const std::vector<struct pollfd>& pollfds)
                         this->rc_blur(this);
                         break;
 
-                    case 'l':
+                    case 'l': {
                         this->rc_line_buffer = &msg[2];
                         if (this->rc_active_context != -1) {
                             this->rc_suggestion.clear();
@@ -1400,6 +1399,7 @@ readline_curses::check_poll_set(const std::vector<struct pollfd>& pollfds)
                             this->rc_display_match(this);
                         }
                         break;
+                    }
 
                     case 'c':
                         this->rc_line_buffer = &msg[2];
@@ -1496,6 +1496,7 @@ readline_curses::set_suggestion(const std::string& value)
         perror("set_suggestion: write failed");
     }
     this->rc_suggestion = value;
+    this->set_needs_update();
 }
 
 void
@@ -1653,7 +1654,7 @@ readline_curses::do_update()
                                  this->vc_x,
                                  this->rc_value,
                                  lr);
-        this->set_x(0);
+        this->set_cursor_x(0);
     }
 
     if (this->rc_active_context != -1) {

src/scripts/lnav-copy-text.lnav

@@ -0,0 +1,15 @@
+#
+# @synopsis: lnav-copy-text
+# @description: Copy text from the top view
+#
+
+;SELECT jget(selected_text, '/value') AS content FROM lnav_top_view
+;SELECT CASE
+    WHEN $content IS NULL THEN
+        ':write-to -'
+    ELSE
+        ':echo -n ${content}'
+    END AS cmd
+
+:redirect-to /dev/clipboard
+:eval ${cmd}

src/scripts/scripts.am

@@ -3,6 +3,7 @@ BUILTIN_LNAVSCRIPTS = \
     $(srcdir)/scripts/dhclient-summary.lnav \
     $(srcdir)/scripts/docker-url-handler.lnav \
     $(srcdir)/scripts/journald-url-handler.lnav \
+    $(srcdir)/scripts/lnav-copy-text.lnav \
     $(srcdir)/scripts/lnav-pop-view.lnav \
     $(srcdir)/scripts/partition-by-boot.lnav \
     $(srcdir)/scripts/piper-url-handler.lnav \

src/styling.hh

@@ -148,6 +148,7 @@ struct lnav_theme {
     positioned_property<style_config> lt_style_type;
     positioned_property<style_config> lt_style_sep_ref_acc;
     positioned_property<style_config> lt_style_suggestion;
+    positioned_property<style_config> lt_style_selected_text;
     positioned_property<style_config> lt_style_re_special;
     positioned_property<style_config> lt_style_re_repeat;
     positioned_property<style_config> lt_style_diff_delete;

src/textview_curses.cc

@@ -37,6 +37,7 @@
 #include "base/injector.hh"
 #include "base/time_util.hh"
 #include "config.h"
+#include "data_scanner.hh"
 #include "fmt/format.h"
 #include "lnav_config.hh"
 #include "log_format_fwd.hh"
@@ -284,9 +285,21 @@ textview_curses::reload_config(error_reporter& reporter)
     }
 }
 
+void
+textview_curses::invoke_scroll()
+{
+    this->tc_selected_text = nonstd::nullopt;
+    if (this->tc_sub_source != nullptr) {
+        this->tc_sub_source->scroll_invoked(this);
+    }
+
+    listview_curses::invoke_scroll();
+}
+
 void
 textview_curses::reload_data()
 {
+    this->tc_selected_text = nonstd::nullopt;
     if (this->tc_sub_source != nullptr) {
         this->tc_sub_source->text_update_marks(this->tc_bookmarks);
     }
@@ -415,6 +428,13 @@ textview_curses::handle_mouse(mouse_event& me)
 
     auto* sub_delegate = dynamic_cast<text_delegate*>(this->tc_sub_source);
 
+    if (me.me_button != mouse_button_t::BUTTON_LEFT
+        || me.me_state != mouse_button_state_t::BUTTON_STATE_RELEASED)
+    {
+        this->tc_selected_text = nonstd::nullopt;
+        this->set_needs_update();
+    }
+
     switch (me.me_state) {
         case mouse_button_state_t::BUTTON_STATE_PRESSED: {
             if (!this->lv_selectable) {
@@ -456,7 +476,36 @@ textview_curses::handle_mouse(mouse_event& me)
                 [this, &me, sub_delegate](const main_content& mc) {
                     if (this->vc_enabled) {
                         if (this->tc_supports_marks) {
-                            this->toggle_user_mark(&BM_USER, mc.mc_line);
+                            attr_line_t al;
+
+                            this->textview_value_for_row(mc.mc_line, al);
+                            auto line_sf
+                                = string_fragment::from_str(al.get_string());
+                            auto cursor_sf
+                                = line_sf.sub_cell_range(me.me_x, me.me_x);
+                            auto ds = data_scanner(line_sf);
+                            auto tf = this->tc_sub_source->get_text_format();
+                            while (true) {
+                                auto tok_res = ds.tokenize2(tf);
+                                if (!tok_res) {
+                                    break;
+                                }
+
+                                auto tok = tok_res.value();
+                                auto tok_sf = tok.to_string_fragment();
+                                if (tok_sf.contains(cursor_sf)) {
+                                    this->tc_selected_text = selected_text_info{
+                                        mc.mc_line,
+                                        line_range{
+                                            tok_sf.sf_begin,
+                                            tok_sf.sf_end,
+                                        },
+                                        tok_sf.to_string(),
+                                    };
+                                    this->set_needs_update();
+                                    break;
+                                }
+                            }
                         }
                         this->set_selection_without_context(mc.mc_line);
                     }
@@ -478,6 +527,27 @@ textview_curses::handle_mouse(mouse_event& me)
         }
         case mouse_button_state_t::BUTTON_STATE_DRAGGED: {
             if (!this->vc_enabled) {
+            } else if (me.me_y == me.me_press_y) {
+                if (mouse_line.is<main_content>()) {
+                    auto& mc = mouse_line.get<main_content>();
+                    attr_line_t al;
+                    auto low_x = std::min(me.me_x, me.me_press_x);
+                    auto high_x = std::max(me.me_x, me.me_press_x);
+
+                    this->textview_value_for_row(mc.mc_line, al);
+                    auto line_sf = string_fragment::from_str(al.get_string());
+                    auto cursor_sf = line_sf.sub_cell_range(low_x, high_x);
+                    if (!cursor_sf.empty()) {
+                        this->tc_selected_text = {
+                            mc.mc_line,
+                            line_range{
+                                cursor_sf.sf_begin,
+                                cursor_sf.sf_end,
+                            },
+                            cursor_sf.to_string(),
+                        };
+                    }
+                }
             } else if (me.me_y < 0) {
                 this->shift_selection(listview_curses::shift_amount_t::up_line);
                 mouse_line = main_content{this->get_top()};
@@ -615,6 +685,14 @@ textview_curses::textview_value_for_row(vis_line_t row, attr_line_t& value_out)
         sa.emplace_back(line_range{orig_line.lr_start, -1},
                         VC_STYLE.value(text_attrs{A_REVERSE}));
     }
+
+    if (this->tc_selected_text) {
+        const auto& sti = this->tc_selected_text.value();
+        if (sti.sti_line == row) {
+            sa.emplace_back(sti.sti_range,
+                            VC_ROLE.value(role_t::VCR_SELECTED_TEXT));
+        }
+    }
 }
 
 void

src/textview_curses.hh

@@ -783,14 +783,7 @@ public:
 
     void revert_search() { this->execute_search(this->tc_previous_search); }
 
-    void invoke_scroll()
-    {
-        if (this->tc_sub_source != nullptr) {
-            this->tc_sub_source->scroll_invoked(this);
-        }
-
-        listview_curses::invoke_scroll();
-    }
+    void invoke_scroll();
 
     textview_curses& set_reload_config_delegate(
         std::function<void(textview_curses&)> func)
@@ -807,6 +800,14 @@ public:
     nonstd::optional<role_t> tc_cursor_role;
     nonstd::optional<role_t> tc_disabled_cursor_role;
 
+    struct selected_text_info {
+        int64_t sti_line;
+        line_range sti_range;
+        std::string sti_value;
+    };
+
+    nonstd::optional<selected_text_info> tc_selected_text;
+
 protected:
     class grep_highlighter {
     public:

src/themes/default-theme.json

@@ -11,6 +11,9 @@
                         "color": "Silver",
                         "background-color": "Black"
                     },
+                    "selected-text": {
+                        "background-color": "DarkCyan"
+                    },
                     "identifier": {
                         "background-color": "",
                         "color": "semantic()"

src/themes/dracula.json

@@ -25,6 +25,9 @@
                         "color": "#f6f6f6",
                         "background-color": "$black"
                     },
+                    "selected-text": {
+                        "background-color": "$cyan"
+                    },
                     "alt-text": {
                         "background-color": "#1c1c1c"
                     },

src/themes/eldar.json

@@ -24,6 +24,9 @@
                         "color": "$white",
                         "background-color": ""
                     },
+                    "selected-text": {
+                        "background-color": "$cyan"
+                    },
                     "alt-text": {
                         "bold": true
                     },

src/themes/monocai.json

@@ -23,6 +23,9 @@
                         "color": "#f6f6f6",
                         "background-color": "$black"
                     },
+                    "selected-text": {
+                        "background-color": "$cyan"
+                    },
                     "alt-text": {
                         "background-color": "#1c1c1c"
                     },

src/themes/night-owl.json

@@ -23,6 +23,9 @@
                         "color": "#d6deeb",
                         "background-color": "#011627"
                     },
+                    "selected-text": {
+                        "background-color": "$cyan"
+                    },
                     "alt-text": {
                         "background-color": "#1c1c1c"
                     },

src/themes/solarized-dark.json

@@ -32,6 +32,9 @@
                         "color": "$base0",
                         "background-color": "$base03"
                     },
+                    "selected-text": {
+                        "background-color": "$cyan"
+                    },
                     "alt-text": {
                         "background-color": "$base02"
                     },

src/themes/solarized-light.json

@@ -31,6 +31,9 @@
                         "color": "$base00",
                         "background-color": "$base3"
                     },
+                    "selected-text": {
+                        "background-color": "$cyan"
+                    },
                     "alt-text": {
                         "background-color": "$base2"
                     },

src/view_curses.cc

@@ -236,7 +236,7 @@ view_curses::mvwattrline(WINDOW* window,
                          role_t base_role)
 {
     auto& sa = al.get_attrs();
-    auto& line = al.get_string();
+    const auto& line = al.get_string();
     std::vector<utf_to_display_adjustment> utf_adjustments;
     std::string full_line;
 
@@ -464,6 +464,12 @@ view_curses::mvwattrline(WINDOW* window,
             } else if (iter->sa_type == &VC_ROLE) {
                 auto role = iter->sa_value.get<role_t>();
                 attrs = vc.attrs_for_role(role);
+
+                if (role == role_t::VCR_SELECTED_TEXT) {
+                    retval.mr_selected_text
+                        = string_fragment::from_str(line).sub_range(
+                            iter->sa_range.lr_start, iter->sa_range.lr_end);
+                }
             } else if (iter->sa_type == &VC_ROLE_FG) {
                 auto role_attrs
                     = vc.attrs_for_role(iter->sa_value.get<role_t>());
@@ -1138,6 +1144,8 @@ view_colors::init_roles(const lnav_theme& lt,
         = this->to_attrs(lt, lt.lt_style_sep_ref_acc, reporter);
     this->vc_role_attrs[lnav::enums::to_underlying(role_t::VCR_SUGGESTION)]
         = this->to_attrs(lt, lt.lt_style_suggestion, reporter);
+    this->vc_role_attrs[lnav::enums::to_underlying(role_t::VCR_SELECTED_TEXT)]
+        = this->to_attrs(lt, lt.lt_style_selected_text, reporter);
 
     this->vc_role_attrs[lnav::enums::to_underlying(role_t::VCR_RE_SPECIAL)]
         = this->to_attrs(lt, lt.lt_style_re_special, reporter);

src/view_curses.hh

@@ -451,6 +451,7 @@ public:
     struct mvwattrline_result {
         size_t mr_chars_out{0};
         size_t mr_bytes_remaining{0};
+        string_fragment mr_selected_text;
     };
 
     static mvwattrline_result mvwattrline(WINDOW* window,

src/view_helpers.cc

@@ -1529,6 +1529,8 @@ lnav_behavior::mouse_event(int button, bool release, int x, int y)
 
             auto* tc = *(lnav_data.ld_view_stack.top());
             if (tc->contains(me.me_x, me.me_y)) {
+                me.me_press_y = me.me_y - tc->get_y();
+                me.me_press_x = me.me_x - tc->get_x();
                 this->lb_last_view = tc;
             } else {
                 for (auto* vc : VIEWS) {

src/views_vtab.cc

@@ -175,6 +175,22 @@ static const typed_json_path_container<top_line_meta> top_line_meta_handlers = {
         .with_children(breadcrumb_crumb_handlers),
 };
 
+static const typed_json_path_container<line_range> line_range_handlers = {
+    yajlpp::property_handler("start").for_field(&line_range::lr_start),
+    yajlpp::property_handler("end").for_field(&line_range::lr_end),
+};
+
+static const typed_json_path_container<textview_curses::selected_text_info>
+    selected_text_handlers = {
+        yajlpp::property_handler("line").for_field(
+            &textview_curses::selected_text_info::sti_line),
+        yajlpp::property_handler("range")
+            .for_child(&textview_curses::selected_text_info::sti_range)
+            .with_children(line_range_handlers),
+        yajlpp::property_handler("value").for_field(
+            &textview_curses::selected_text_info::sti_value),
+};
+
 enum class row_details_t {
     hide,
     show,
@@ -259,7 +275,8 @@ CREATE TABLE lnav_views (
     movement TEXT,          -- The movement mode, either 'top' or 'cursor'.
     top_meta TEXT,          -- A JSON object that contains metadata related to the top line in the view.
     selection INTEGER,      -- The number of the line that is focused for selection.
-    options TEXT            -- A JSON object that contains optional settings for this view.
+    options TEXT,           -- A JSON object that contains optional settings for this view.
+    selected_text TEXT      -- A JSON object that contains information about the text selected by the mouse in the view.
 );
 )";
 
@@ -456,6 +473,16 @@ CREATE TABLE lnav_views (
                 }
                 break;
             }
+            case 14: {
+                if (tc.tc_selected_text) {
+                    to_sqlite(ctx,
+                              selected_text_handlers.to_json_string(
+                                  tc.tc_selected_text.value()));
+                } else {
+                    sqlite3_result_null(ctx);
+                }
+                break;
+            }
         }
 
         return SQLITE_OK;
@@ -490,7 +517,8 @@ CREATE TABLE lnav_views (
                    string_fragment movement,
                    const char* top_meta,
                    int64_t selection,
-                   nonstd::optional<string_fragment> options)
+                   nonstd::optional<string_fragment> options,
+                   nonstd::optional<string_fragment> selected_text)
     {
         auto& tc = lnav_data.ld_views[index];
         auto* time_source

test/expected/test_cli.sh_0b3639753916f71254e8c9cce4ebb8bfd9978d3e.out

@@ -146,6 +146,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "DarkCyan",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "#262626",
@@ -742,6 +748,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "$cyan",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "#1c1c1c",
@@ -1301,6 +1313,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "$cyan",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "",
@@ -1859,6 +1877,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "",
@@ -2418,6 +2442,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "$cyan",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "#1c1c1c",
@@ -2976,6 +3006,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "$cyan",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "#1c1c1c",
@@ -3543,6 +3579,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "$cyan",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "$base02",
@@ -4110,6 +4152,12 @@
                         "underline": false,
                         "bold": false
                     },
+                    "selected-text": {
+                        "color": "",
+                        "background-color": "$cyan",
+                        "underline": false,
+                        "bold": false
+                    },
                     "alt-text": {
                         "color": "",
                         "background-color": "$base2",
@@ -4847,7 +4895,7 @@
                     "alt-msg": ""
                 },
                 "x63": {
-                    "command": ":write-to /dev/clipboard",
+                    "command": "|lnav-copy-text",
                     "alt-msg": "${keymap_def_clear}"
                 },
                 "x65": {