Added system.set_fullscreen() and core:toggle-fullscreen command

data/core/commands/core.lua

@@ -7,6 +7,8 @@ local DocView = require "core.docview"
 local LogView = require "core.logview"
 
 
+local fullscreen = false
+
 command.add(nil, {
   ["core:quit"] = function()
     core.quit()
@@ -16,6 +18,11 @@ command.add(nil, {
     core.quit(true)
   end,
 
+  ["core:toggle-fullscreen"] = function()
+    fullscreen = not fullscreen
+    system.set_fullscreen(fullscreen)
+  end,
+
   ["core:reload-module"] = function()
     core.command_view:enter("Reload Module", function(text, item)
       local text = item and item.text or text

data/core/keymap.lua

@@ -88,6 +88,7 @@ keymap.add {
   ["ctrl+p"] = "core:open-project-file",
   ["ctrl+o"] = "core:open-file",
   ["ctrl+n"] = "core:new-doc",
+  ["alt+return"] = "core:toggle-fullscreen",
 
   ["alt+shift+j"] = "root:split-left",
   ["alt+shift+l"] = "root:split-right",