Add help message for keybinds

README.md

@@ -112,4 +112,5 @@ vim.g.symbols_outline = {
 | K          | Show current symbol preview                        |
 | r          | Rename symbol                                      |
 | a          | Code actions                                       |
+| ?          | Show help message                                  |
 

doc/symbols-outline.txt

@@ -236,6 +236,7 @@ symbol_blacklist
 | K          | Show current symbol preview                        |
 | r          | Rename symbol                                      |
 | a          | Code actions                                       |
+| ?          | Show help message                                  |
 
 ================================================================================
 vim:tw=79:ts=8:ft=help:norl

lua/symbols-outline.lua

@@ -223,6 +223,9 @@ local function setup_keymaps(bufnr)
     -- code actions
     nmap(config.options.keymaps.code_actions,
          ":lua require('symbols-outline.code_action').show_code_actions()<Cr>")
+    -- show help
+    nmap(config.options.keymaps.show_help,
+         ":lua require('symbols-outline.config').show_help()<Cr>")
     -- close outline
     nmap(config.options.keymaps.close, ":bw!<Cr>")
 end

lua/symbols-outline/config.lua

@@ -18,7 +18,8 @@ local defaults = {
         hover_symbol = "<C-space>",
         preview_symbol = "K",
         rename_symbol = "r",
-        code_actions = "a"
+        code_actions = "a",
+        show_help = "?",
     },
     lsp_blacklist = {},
     symbol_blacklist = {},
@@ -93,6 +94,11 @@ function M.is_client_blacklisted(client_id)
     return has_value(M.options.lsp_blacklist, client.name)
 end
 
+function M.show_help()
+    print "Current keymaps:"
+    print(vim.inspect(M.options.keymaps))
+end
+
 function M.setup(options)
     M.options = vim.tbl_deep_extend("force", {}, defaults, options or {})
 end