diff --git a/src/tui/editor_gutter.zig b/src/tui/editor_gutter.zig
index 945632f..d79ca88 100644
--- a/src/tui/editor_gutter.zig
+++ b/src/tui/editor_gutter.zig
@@ -89,6 +89,8 @@ pub fn receive(self: *Self, _: tp.pid_ref, m: tp.message) error{Exit}!bool {
 
     if (try m.match(.{ "B", nc.event_type.PRESS, nc.key.BUTTON1, tp.any, tp.any, tp.extract(&y), tp.any, tp.extract(&ypx) }))
         return self.primary_click(y);
+    if (try m.match(.{ "B", nc.event_type.PRESS, nc.key.BUTTON3, tp.any, tp.any, tp.extract(&y), tp.any, tp.extract(&ypx) }))
+        return self.secondary_click();
     if (try m.match(.{ "D", nc.event_type.PRESS, nc.key.BUTTON1, tp.any, tp.any, tp.extract(&y), tp.any, tp.extract(&ypx) }))
         return self.primary_drag(y);
     if (try m.match(.{ "B", nc.event_type.PRESS, nc.key.BUTTON4, tp.more }))
@@ -232,6 +234,11 @@ fn primary_drag(_: *const Self, y: i32) error{Exit}!bool {
     return true;
 }
 
+fn secondary_click(_: *Self) error{Exit}!bool {
+    try command.executeName("gutter_mode_next", .{});
+    return true;
+}
+
 fn mouse_click_button4(_: *Self) error{Exit}!bool {
     try command.executeName("scroll_up_pageup", .{});
     return true;
diff --git a/src/tui/mainview.zig b/src/tui/mainview.zig
index a3e79c8..26743ae 100644
--- a/src/tui/mainview.zig
+++ b/src/tui/mainview.zig
@@ -262,6 +262,31 @@ const cmds = struct {
     pub fn show_home(self: *Self, _: Ctx) tp.result {
         return self.create_home();
     }
+
+    pub fn gutter_mode_next(self: *Self, _: Ctx) tp.result {
+        const tui_ = tui.current();
+        var ln = tui_.config.gutter_line_numbers;
+        var lnr = tui_.config.gutter_line_numbers_relative;
+        if (ln and !lnr) {
+            ln = true;
+            lnr = true;
+        } else if (ln and lnr) {
+            ln = false;
+            lnr = false;
+        } else {
+            ln = true;
+            lnr = false;
+        }
+        tui_.config.gutter_line_numbers = ln;
+        tui_.config.gutter_line_numbers_relative = lnr;
+        tui_.save_config() catch |e| return tp.exit_error(e);
+        if (self.widgets.get("editor_gutter")) |gutter_widget| {
+            const gutter = if (gutter_widget.dynamic_cast(@import("editor_gutter.zig"))) |p| p else return;
+            gutter.linenum = ln;
+            gutter.relative = lnr;
+        }
+    }
+
 };
 
 pub fn handle_editor_event(self: *Self, _: tp.pid_ref, m: tp.message) tp.result {
diff --git a/src/tui/mode/input/flow.zig b/src/tui/mode/input/flow.zig
index 45c86b5..05e1466 100644
--- a/src/tui/mode/input/flow.zig
+++ b/src/tui/mode/input/flow.zig
@@ -193,6 +193,7 @@ fn mapPress(self: *Self, keypress: u32, egc: u32, modifiers: u32) tp.result {
             key.F11 => self.cmd("toggle_logview", .{}),
             key.F12 => self.cmd("goto_definition", .{}),
             key.F34 => self.cmd("toggle_whitespace", .{}), // C-F10
+            key.F58 => self.cmd("gutter_mode_next", .{}), // A-F10
             key.ESC => self.cmd("cancel", .{}),
             key.ENTER => self.cmd("smart_insert_line", .{}),
             key.DEL => self.cmd("delete_forward", .{}),
diff --git a/src/tui/mode/input/vim/insert.zig b/src/tui/mode/input/vim/insert.zig
index fe64bf2..a13e1eb 100644
--- a/src/tui/mode/input/vim/insert.zig
+++ b/src/tui/mode/input/vim/insert.zig
@@ -194,6 +194,7 @@ fn mapPress(self: *Self, keypress: u32, egc: u32, modifiers: u32) tp.result {
             key.F11 => self.cmd("toggle_logview", .{}),
             key.F12 => self.cmd("goto_definition", .{}),
             key.F34 => self.cmd("toggle_whitespace", .{}), // C-F10
+            key.F58 => self.cmd("gutter_mode_next", .{}), // A-F10
             key.ESC => self.cmd("enter_mode", command.fmt(.{"vim/normal"})),
             key.ENTER => self.cmd("smart_insert_line", .{}),
             key.DEL => self.cmd("delete_forward", .{}),
diff --git a/src/tui/mode/input/vim/normal.zig b/src/tui/mode/input/vim/normal.zig
index 8e4388d..35cae94 100644
--- a/src/tui/mode/input/vim/normal.zig
+++ b/src/tui/mode/input/vim/normal.zig
@@ -213,6 +213,7 @@ fn mapPress(self: *Self, keypress: u32, egc: u32, modifiers: u32) tp.result {
             key.F11 => self.cmd("toggle_logview", .{}),
             key.F12 => self.cmd("goto_definition", .{}),
             key.F34 => self.cmd("toggle_whitespace", .{}), // C-F10
+            key.F58 => self.cmd("gutter_mode_next", .{}), // A-F10
             key.ESC => self.cmd("cancel", .{}),
             key.ENTER => self.cmd("smart_insert_line", .{}),
             key.DEL => self.cmd("delete_forward", .{}),
diff --git a/src/tui/mode/input/vim/visual.zig b/src/tui/mode/input/vim/visual.zig
index c15b38c..996dd4e 100644
--- a/src/tui/mode/input/vim/visual.zig
+++ b/src/tui/mode/input/vim/visual.zig
@@ -209,6 +209,7 @@ fn mapPress(self: *Self, keypress: u32, egc: u32, modifiers: u32) tp.result {
             key.F11 => self.cmd("toggle_logview", .{}),
             key.F12 => self.cmd("goto_definition", .{}),
             key.F34 => self.cmd("toggle_whitespace", .{}), // C-F10
+            key.F58 => self.cmd("gutter_mode_next", .{}), // A-F10
             key.ESC => self.seq(.{ "cancel", "enter_mode" }, command.fmt(.{"vim/normal"})),
             key.ENTER => self.cmd("smart_insert_line", .{}),
             key.DEL => self.cmd("delete_forward", .{}),
diff --git a/src/tui/tui.zig b/src/tui/tui.zig
index 71fabfd..bb452d3 100644
--- a/src/tui/tui.zig
+++ b/src/tui/tui.zig
@@ -679,7 +679,7 @@ fn send_input(self: *Self, from: tp.pid_ref, m: tp.message) void {
         mode.handler.send(from, m) catch |e| self.logger.err("input handler", e);
 }
 
-fn save_config(self: *const Self) !void {
+pub fn save_config(self: *const Self) !void {
     try root.write_config(self.config, self.a);
 }