stack_view: add keybinds to open in split (#93)

Author: dhananjaylatkar

README.md

@@ -56,6 +56,8 @@ Heavily inspired by emacs' [xcscope.el](https://github.com/dkogan/xcscope.el).
 - In `CsStackView` window, use following keymaps
   - `<tab>` toggle child under cursor
   - `<cr>` open location of symbol under cursor
+  - `<C-v>` open location of symbol under cursor in vertical split
+  - `<C-s>` open location of symbol under cursor in horizontal split
   - `q` or `<esc>` close window
   - `<C-u>` or `<C-y>` scroll up preview
   - `<C-d>` or `<C-e>` scroll down preview

doc/cscope_maps.txt

@@ -1,4 +1,4 @@
-*cscope_maps.txt*      For Neovim >= v0.10.0      Last change: 2025 October 10
+*cscope_maps.txt*      For Neovim >= v0.10.0      Last change: 2025 October 29
 
 ==============================================================================
 Table of Contents                              *cscope_maps-table-of-contents*
@@ -77,6 +77,8 @@ STACK VIEW ~
 - In `CsStackView` window, use following keymaps
     - `<tab>` toggle child under cursor
     - `<cr>` open location of symbol under cursor
+    - `<C-v>` open location of symbol under cursor in vertical split
+    - `<C-s>` open location of symbol under cursor in horizontal split
     - `q` or `<esc>` close window
     - `<C-u>` or `<C-y>` scroll up preview
     - `<C-d>` or `<C-e>` scroll down preview

lua/cscope/stack_view/init.lua

@@ -95,7 +95,15 @@ M.set_keymaps = function()
 	vim.keymap.set("n", "<tab>", M.toggle_children, opts)
 
 	-- open location under cursor
-	vim.keymap.set("n", "<cr>", M.enter_action, opts)
+	vim.keymap.set("n", "<cr>", function()
+		M.open_action("none")
+	end, opts)
+	vim.keymap.set("n", "<C-v>", function()
+		M.open_action("vert")
+	end, opts)
+	vim.keymap.set("n", "<C-s>", function()
+		M.open_action("horiz")
+	end, opts)
 
 	-- scroll up
 	vim.keymap.set("n", "<C-u>", M.pv_scroll(-1), opts)
@@ -128,7 +136,7 @@ M.set_autocmds = function()
 	api.nvim_create_autocmd("VimResized", {
 		group = augroup,
 		buffer = M.cache.sv.buf,
-		callback = function ()
+		callback = function()
 			buf_last_pos = fn.line(".")
 			M.buf_close()
 			M.buf_open_and_update()
@@ -402,7 +410,7 @@ M.toggle_win = function()
 	M.buf_open_and_update()
 end
 
-M.enter_action = function()
+M.open_action = function(split)
 	if vim.bo.filetype ~= M.ft then
 		return
 	end
@@ -413,7 +421,7 @@ M.enter_action = function()
 
 	local _, pfilename, plnum = M.line_to_data(fn.getline("."))
 	M.toggle_win()
-	utils.open_file(pfilename, plnum)
+	utils.open_file(pfilename, plnum, split)
 end
 
 -- :CsStackView toggle

lua/cscope_maps/utils/init.lua

@@ -139,10 +139,17 @@ M.is_path_same = function(path1, path2)
 	return path1 and path2 and M.get_abs_path(path1) == M.get_abs_path(path2)
 end
 
----Opens file at given line number
+---Opens file at given line number and split orientation
 ---@param fname string
 ---@param lnum number
-M.open_file = function(fname, lnum)
+---@param split string
+M.open_file = function(fname, lnum, split)
+	if split == "vert" then
+		vim.cmd("vsplit")
+	elseif split == "horiz" then
+		vim.cmd("split")
+	end
+
 	if M.is_path_same(vim.api.nvim_buf_get_name(0), fname) then
 		-- change position when in same buffer
 		vim.api.nvim_win_set_cursor(0, { lnum, 0 })