From 3f4856bccd89e0e16f6f795580158aa89b993ce3 Mon Sep 17 00:00:00 2001
From: Francesco Abbate <francesco.bbt@gmail.com>
Date: Wed, 24 Mar 2021 11:23:04 +0100
Subject: [PATCH] Add undo command

Do not insert text in command mode
---
 data/core/docview.lua | 4 +++-
 data/core/keymap.lua  | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/data/core/docview.lua b/data/core/docview.lua
index 3e19cd1c..8f3ca7f6 100644
--- a/data/core/docview.lua
+++ b/data/core/docview.lua
@@ -284,7 +284,9 @@ end
 
 
 function DocView:on_text_input(text)
-  self.doc:text_input(text)
+  if self.editing_mode ~= 'command' then
+    self.doc:text_input(text)
+  end
 end
 
 
diff --git a/data/core/keymap.lua b/data/core/keymap.lua
index 1bd812c5..6a03580c 100644
--- a/data/core/keymap.lua
+++ b/data/core/keymap.lua
@@ -28,7 +28,7 @@ local function table_find(t, e)
 end
 
 keymap.vim_verbs_obj = {'d', 'c'}
-keymap.vim_verbs_imm = {'y', 'p', 'h', 'j', 'k', 'l', 'x', 'i'}
+keymap.vim_verbs_imm = {'y', 'p', 'h', 'j', 'k', 'l', 'x', 'i', 'u'}
 keymap.vim_objects = {'w', '$'}
 
 local vim_object_map = {
@@ -62,6 +62,8 @@ function keymap.vim_execute(verb, mult, object)
     command.perform('core:set-insert-mode')
   elseif verb == 'p' then
     command.perform('doc:paste')
+  elseif verb == 'u' then
+    command.perform('doc:undo')
   else
     return false
   end