patch 9.0.1686: undotree() only works for the current buffer Commit: https://github.com/vim/vim/commit/5fee11114975b7405b7ccd3ee8758e54bf559760 Author: Devin J. Pohly <djpohly@gmail.com> Date: Sun Apr 23 20:26:59 2023 -0500 patch 9.0.1686: undotree() only works for the current buffer Problem: undotree() only works for the current buffer Solution: Add an optional "buffer number" parameter to undotree(). If omitted, use the current buffer for backwards compatibility. closes: #4001 closes: #12292 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: zeertzjq <zeertzjq@outlook.com> Co-authored-by: Devin J. Pohly <djpohly@gmail.com>

|1+0&#ffff4012|2|3| +0&#ffffff0@4|x| @65
|1+0&#ffff4012|2|3|4|5|6|7| +0&#ffffff0|x| @65
|1+0&#ffff4012|2|3|4|5|6|7|8| +0&#ffffff0@6> |x| @57
|1+0&#ffff4012|2|3|4|5|6|7|8|9| +0&#ffffff0@6|x| @57
@8|A+0&#ffff4012|B|C|x+0&#ffffff0| @62
@8|x|A+0&#ffff4012|B|C| +0&#ffffff0@62
|~+0#4040ff13&| @73
| +0#0000000&@56|3|,|1|-|1|6| @7|A|l@1|