feat: support undo. fix #162

lua/nvim-autopairs.lua

@@ -431,7 +431,12 @@ M.autopairs_map = function(bufnr, char)
                 if end_pair:match('<.*>') then
                     end_pair = utils.esc(end_pair)
                 end
-                return char .. end_pair .. utils.esc(move_text)
+                local result= char .. end_pair .. utils.esc(move_text)
+                if rule.is_undo then
+                    result = utils.esc(utils.key.undo_sequence) .. result..utils.esc(utils.key.undo_sequence)
+                end
+                log.debug("key_map :" .. result)
+                return result
             end
         end
     end

lua/nvim-autopairs/rule.lua

@@ -13,6 +13,7 @@ local log = require('nvim-autopairs._log')
 --- @field is_regex boolean          use regex to compare
 --- @field is_multibyte boolean
 --- @field is_endwise boolean        only use on end_wise
+--- @field is_undo boolean           add break undo sequence
 local Rule = {}
 Rule.__index = Rule
 
@@ -84,6 +85,12 @@ function Rule:use_key(key_map)
     return self
 end
 
+function Rule:use_undo(value)
+    if value ~= nil then value = true end
+    self.is_undo = value
+    return self
+end
+
 function Rule:use_multibyte()
     self.is_multibyte = true
     self.end_pair_length = vim.fn.strdisplaywidth(self.end_pair)
@@ -103,7 +110,7 @@ function Rule:get_map_cr(opts)
     if self.map_cr_func then
         return self.map_cr_func(opts)
     end
-    return '<cr><c-o>O'
+    return '<cr><cr><c-g>u<up><c-t>'
 end
 
 

lua/nvim-autopairs/rules/basic.lua

@@ -11,6 +11,7 @@ local function setup(opt)
         if #opt.ignored_next_char > 1 then
             rule:with_pair(cond.not_after_regex_check(opt.ignored_next_char))
         end
+        rule:use_undo(true)
         return rule
     end
 

lua/nvim-autopairs/utils.lua

@@ -8,7 +8,9 @@ M.key = {
     left = "<left>",
     right = "<right>",
     join_left = "<c-g>U<left>",
-    join_right = "<c-g>U<right>"
+    join_right = "<c-g>U<right>",
+    undo_sequence = "<c-g>u",
+    noundo_sequence = "<c-g>U"
 }
 
 M.set_vchar = function(text)