refactor: merge select_line_around_cursor into select_line_at_cursor

This is the expected behaviour (for me at least) and makes delete_line
significantly more useful than plain `cut` with no selection.

closes #342

src/keybind/builtin/flow.json

@@ -201,6 +201,7 @@
             ["shift+kp_page_down", "select_page_down"],
             ["shift+enter", "smart_insert_line_before"],
             ["shift+backspace", "delete_backward"],
+            ["ctrl+shift+k", "delete_line"],
             ["shift+tab", "unindent"],
             ["f2", "rename_symbol"],
             ["f3", "goto_next_match"],

src/tui/editor.zig

@@ -2406,7 +2406,7 @@ pub const Editor = struct {
         primary.disable_selection(root, self.metrics);
         self.selection_mode = .line;
         primary.cursor.move_abs(root, &self.view, @intCast(y), @intCast(x), self.metrics) catch return;
-        try self.select_line_at_cursor(primary);
+        try self.select_line_at_cursor(root, primary, .exclude_eol);
         self.selection_drag_initial = primary.selection;
         self.clamp_mouse();
     }
@@ -2678,13 +2678,8 @@ pub const Editor = struct {
         const primary = self.get_primary();
         const b = self.buf_for_update() catch return;
         var root = b.root;
-        if (self.cursels.items.len == 1)
-            if (primary.selection) |_| {} else {
-                const sel = primary.enable_selection(root, self.metrics) catch return;
-                try move_cursor_begin(root, &sel.begin, self.metrics);
-                try move_cursor_end(root, &sel.end, self.metrics);
-                try move_cursor_right(root, &sel.end, self.metrics);
-            };
+        if (self.cursels.items.len == 1 and primary.selection == null)
+            try self.select_line_at_cursor(root, primary, .include_eol);
         for (self.cursels.items) |*cursel_| if (cursel_.*) |*cursel| {
             const cut_text, root = try self.cut_selection(root, cursel, tui.clipboard_allocator());
             tui.clipboard_add_chunk(cut_text);
@@ -2698,19 +2693,8 @@ pub const Editor = struct {
         const primary = self.get_primary();
         const b = self.buf_for_update() catch return;
         var root = b.root;
-        if (self.cursels.items.len == 1)
-            if (primary.selection) |_| {} else {
-                const sel = primary.enable_selection(root, self.metrics) catch return;
-                try move_cursor_begin(root, &sel.begin, self.metrics);
-                move_cursor_end(root, &sel.end, self.metrics) catch |e| switch (e) {
-                    error.Stop => {},
-                    else => return e,
-                };
-                move_cursor_right(root, &sel.end, self.metrics) catch |e| switch (e) {
-                    error.Stop => {},
-                    else => return e,
-                };
-            };
+        if (self.cursels.items.len == 1 and primary.selection == null)
+            try self.select_line_at_cursor(root, primary, .include_eol);
         var count: usize = 0;
         for (self.cursels.items) |*cursel_| if (cursel_.*) |*cursel| {
             count += 1;
@@ -3031,6 +3015,23 @@ pub const Editor = struct {
     }
     pub const delete_to_end_meta: Meta = .{ .description = "Delete to end of line" };
 
+    pub fn delete_line(self: *Self, _: Context) Result {
+        const b = try self.buf_for_update();
+        var root = b.root;
+        for (self.cursels.items) |*cursel_| if (cursel_.*) |*cursel| {
+            const col = cursel.cursor.col;
+            const target = cursel.cursor.target;
+            try self.select_line_at_cursor(root, cursel, .include_eol);
+            root = try self.delete_selection(root, cursel, b.allocator);
+            cursel.cursor.col = col;
+            cursel.cursor.target = target;
+            cursel.cursor.clamp_to_buffer(root, self.metrics);
+        };
+        try self.update_buf(root);
+        self.clamp();
+    }
+    pub const delete_line_meta: Meta = .{ .description = "Delete current line" };
+
     pub fn cut_to_end_vim(self: *Self, _: Context) Result {
         const b = try self.buf_for_update();
         const root = try self.cut_to(move_cursor_end_vim, b.root);
@@ -3860,9 +3861,10 @@ pub const Editor = struct {
     pub const enable_selection_meta: Meta = .{ .description = "Enable selection" };
 
     pub fn select_line_vim(self: *Self, _: Context) Result {
+        const root = try self.buf_root();
         self.selection_mode = .line;
         for (self.cursels.items) |*cursel_| if (cursel_.*) |*cursel|
-            try self.select_line_around_cursor(cursel);
+            try self.select_line_at_cursor(root, cursel, .hold_cursor);
         self.collapse_cursors();
 
         self.clamp();
@@ -4102,21 +4104,19 @@ pub const Editor = struct {
         return sel;
     }
 
-    fn select_line_at_cursor(self: *Self, cursel: *CurSel) !void {
-        const root = try self.buf_root();
+    fn select_line_at_cursor(self: *Self, root: Buffer.Root, cursel: *CurSel, mode: enum { include_eol, exclude_eol, hold_cursor }) !void {
         const sel = try cursel.enable_selection(root, self.metrics);
         sel.normalize();
         try move_cursor_begin(root, &sel.begin, self.metrics);
         move_cursor_end(root, &sel.end, self.metrics) catch {};
-        cursel.cursor = sel.end;
+        switch (mode) {
+            .include_eol => move_cursor_right(root, &sel.end, self.metrics) catch {}, // catch{} because may be impossible to get eol (e.g., we're at eof)
+            else => {},
+        }
+        switch (mode) {
+            .hold_cursor => {},
+            else => cursel.cursor = sel.end,
         }
-
-    pub fn select_line_around_cursor(self: *Self, cursel: *CurSel) !void {
-        const root = try self.buf_root();
-        const sel = try cursel.enable_selection(root, self.metrics);
-        sel.normalize();
-        try move_cursor_begin(root, &sel.begin, self.metrics);
-        try move_cursor_end(root, &sel.end, self.metrics);
     }
 
     fn selection_reverse(_: Buffer.Root, cursel: *CurSel) !void {

src/tui/mode/vim.zig

@@ -140,19 +140,4 @@ const cmds_ = struct {
     }
 
     pub const copy_line_meta: Meta = .{ .description = "Copies the current line" };
-
-    pub fn delete_line(self: *void, ctx: Ctx) Result {
-        _ = self; // autofix
-        _ = ctx; // autofix
-        //TODO
-        return undefined;
-        //try self.move_begin(ctx);
-        //const b = try self.buf_for_update();
-        //var root = try self.delete_to(move_cursor_end, b.root, b.allocator);
-        //root = try self.delete_to(move_cursor_right, b.root, b.allocator);
-        //try self.delete_forward(ctx);
-        //try self.update_buf(root);
-        //self.clamp();
-    }
-    pub const delete_line_meta: Meta = .{ .description = "Delete the current line without copying" };
 };