feat: global configuration of results_title and prompt_title (#1817)

doc/telescope.txt

@@ -307,6 +307,21 @@ telescope.setup({opts})                                    *telescope.setup()*
 
         Default: false
 
+                                         *telescope.defaults.results_title*
+    results_title: ~
+        Defines the default title of the results window. A false value
+        can be used to hide the title altogether.
+
+        Default: "Results"
+
+                                          *telescope.defaults.prompt_title*
+    prompt_title: ~
+        Defines the default title of the prompt window. A false value
+        can be used to hide the title altogether. Most of the times builtins
+        define a prompt_title which will be prefered over this default.
+
+        Default: "Prompt"
+
                                                *telescope.defaults.history*
     history: ~
         This field handles the configuration for prompt history.

lua/telescope/config.lua

@@ -419,6 +419,27 @@ append(
   Default: false]]
 )
 
+append(
+  "results_title",
+  "Results",
+  [[
+  Defines the default title of the results window. A false value
+  can be used to hide the title altogether.
+
+  Default: "Results"]]
+)
+
+append(
+  "prompt_title",
+  "Prompt",
+  [[
+  Defines the default title of the prompt window. A false value
+  can be used to hide the title altogether. Most of the times builtins
+  define a prompt_title which will be prefered over this default.
+
+  Default: "Prompt"]]
+)
+
 append(
   "history",
   {

lua/telescope/pickers.lua

@@ -64,8 +64,8 @@ function Picker:new(opts)
   local layout_strategy = get_default(opts.layout_strategy, config.values.layout_strategy)
 
   local obj = setmetatable({
-    prompt_title = get_default(opts.prompt_title, "Prompt"),
+    prompt_title = get_default(opts.prompt_title, config.values.prompt_title),
-    results_title = get_default(opts.results_title, "Results"),
+    results_title = get_default(opts.results_title, config.values.results_title),
     -- either whats passed in by the user or whats defined by the previewer
     preview_title = opts.preview_title,