Added command doc:select-none, added binding to escape

data/core/commands/doc.lua

@@ -135,6 +135,11 @@ 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()
     local line1, _, line2, _, swap = doc():get_selection(true)
     append_line_if_last_line(line2)

data/core/keymap.lua

@@ -127,7 +127,7 @@ keymap.add {
   ["ctrl+x"] = "doc:cut",
   ["ctrl+c"] = "doc:copy",
   ["ctrl+v"] = "doc:paste",
-  ["escape"] = { "command:escape" },
+  ["escape"] = { "command:escape", "doc:select-none" },
   ["tab"] = { "command:complete", "doc:indent" },
   ["shift+tab"] = "doc:unindent",
   ["backspace"] = "doc:backspace",