Improve patching implementation

lua/cmp/utils/patch.lua

@@ -1,32 +0,0 @@
-local keymap = require('cmp.utils.keymap')
-local types = require('cmp.types')
-
-local patch = {}
-
----@type table<number, function>
-patch.callbacks = {}
-
----Apply oneline textEdit
----@param ctx cmp.Context
----@param range lsp.Range
----@param word string
----@param callback function
-patch.apply = function(ctx, range, word, callback)
-  local ok = true
-  ok = ok and range.start.line == ctx.cursor.row - 1
-  ok = ok and range.start.line == range['end'].line
-  if not ok then
-    error("text_edit's range must be current one line.")
-  end
-  range = types.lsp.Range.to_vim(ctx.bufnr, range)
-
-  local before = string.sub(ctx.cursor_before_line, range.start.col)
-  local after = string.sub(ctx.cursor_after_line, ctx.cursor.col, range['end'].col)
-  local before_len = vim.fn.strchars(before)
-  local after_len = vim.fn.strchars(after)
-  local keys = string.rep('<Left>', after_len) .. string.rep('<BS>', after_len + before_len) .. word
-  keymap.feedkeys(keys, 'n', callback)
-end
-
-return patch
-