Problem: test: undofile left behind
Solution: cleanup undofile
fix: tmp file not deleted when running make test_undo
Temporary file `.Xtestfile.txt.un~` was left running `make test_undo`
and vim was configured with:
```
./configure --with-features=normal --enable-gui=no --enable-terminal
```
closes: vim/vim#13304b07b9dc4da
Co-authored-by: Dominique Pellé <dominique.pelle@tomtom.com>
vim-patch:9.0.1866: undo is synced after character find
Problem: Undo is synced after character find.
Solution: Set no_u_sync when calling gotchars_nop().
closes: vim/vim#13022closes: vim/vim#13024dccc29c228
Problem: On MS-Windows some tests are flaky.
Solution: Add sleeps, disable swapfile, mark test as flaky. (Ken Takata,
closesvim/vim#11082)
0500e87eba
Co-authored-by: K.Takata <kentkt@csc.jp>
Problem: crash when passing invalid buffer to undotree()
Solution: Use get_buf_arg() instead of tv_get_buf_from_arg().
closes: vim/vim#12862closes: vim/vim#12830ab9f2ecfd4
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: vim/vim#4001closes: vim/vim#122925fee111149
Co-authored-by: Devin J. Pohly <djpohly@gmail.com>
