This repository has been archived by the owner on Jan 6, 2023. It is now read-only.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
1.撤销栈为空时直接执行cut操作,应该先一次记录当前的副本,否则无法正确撤销
2.cut操作记录撤销栈时应该save剪切完成后的副本而不是剪切前的(否则会导致cut操作后的内容副本不被记录,如果cut之后立刻执行撤销,看起来会是连续撤销了两步)