Added in cut, copy and paste to the context menu. Also removed find pattern, as that's no longer a valid command. Also made it so commands only show up if their predicates are valid.

data/core/commands/doc.lua

@@ -92,6 +92,21 @@ local function set_cursor(x, y, snap_type)
   core.blink_reset()
 end
 
+local selection_commands = {
+  ["doc:cut"] = function()
+    cut_or_copy(true)
+  end,
+
+  ["doc:copy"] = function()
+    cut_or_copy(false)
+  end,
+
+  ["doc:select-none"] = function()
+    local line, col = doc():get_selection()
+    doc():set_selection(line, col)
+  end
+}
+
 local commands = {
   ["doc:undo"] = function()
     doc():undo()
@@ -101,14 +116,6 @@ local commands = {
     doc():redo()
   end,
 
-  ["doc:cut"] = function()
-    cut_or_copy(true)
-  end,
-
-  ["doc:copy"] = function()
-    cut_or_copy(false)
-  end,
-
   ["doc:paste"] = function()
     local clipboard = system.get_clipboard()
     -- If the clipboard has changed since our last look, use that instead
@@ -173,11 +180,6 @@ local commands = {
     doc():set_selection(1, 1, math.huge, math.huge)
   end,
 
-  ["doc:select-none"] = function()
-    local line, col = doc():get_selection()
-    doc():set_selection(line, col)
-  end,
-
   ["doc:select-lines"] = function()
     for idx, line1, _, line2 in doc():get_selections(true) do
       append_line_if_last_line(line2)
@@ -481,3 +483,6 @@ commands["doc:move-to-next-char"] = function()
 end
 
 command.add("core.docview", commands)
+command.add(function()
+  return core.active_view:is(DocView) and core.active_view.doc:has_any_selection()
+end ,selection_commands)