patch 9.0.1747: screenpos() may cause unnecessary redraw Commit: https://github.com/vim/vim/commit/6235a109c48ff2559eca3b16578c429ffb61eadc Author: zeertzjq <zeertzjq@outlook.com> Date: Sat Aug 19 14:12:42 2023 +0200 patch 9.0.1747: screenpos() may cause unnecessary redraw Problem: screenpos() may cause unnecessary redraw. Solution: Don't unnecessarily reset VALID_WROW flag. VALID_WROW flag is only used by two functions: validate_cursor() and cursor_valid(), and cursor_valid() is only used once in ex_sleep(). When adjust_plines_for_skipcol() was first added in patch 9.0.0640, it was called in two functions: comp_botline() and curs_rows(). - comp_botline() is called in two places: - onepage(), which resets VALID_WROW flag immediately afterwards. - validate_botline_win(), where resetting a VALID_ flag is strange. - curs_rows() is called in two places: - curs_columns(), which sets VALID_WROW flag afterwards. - validate_cline_row(), which is only used by GUI mouse focus. Therefore resetting VALID_WROW there doesn't seem to do anything useful. Also, a w_skipcol check (which resets VALID_WROW flag) was added to check_cursor_moved() in patch 9.0.0734, which seems to make more sense than resetting that flag in the middle of a computation. While at it make adjust_plines_for_skipcol() and textpos2screenpos() a bit less confusing: - Make adjust_plines_for_skipcol() return "off" instead of "n - off". - Use 0-based "row" in textpos2screenpos() until W_WINROW is added. closes: #12832 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: zeertzjq <zeertzjq@outlook.com>

README_ami.txt for version 9.0 of Vim: Vi IMproved.

This file explains the installation of Vim on Amiga systems.
See README.txt for general information about Vim.


Unpack the distributed files in the place where you want to keep them.  It is
wise to have a "vim" directory to keep your vimrc file and any other files you
change.  The distributed files go into a subdirectory.  This way you can
easily upgrade to a new version.  For example:

  dh0:editors/vim		contains your vimrc and modified files
  dh0:editors/vim/vim54		contains the Vim version 5.4 distributed files
  dh0:editors/vim/vim55		contains the Vim version 5.5 distributed files

You would then unpack the archives like this:

  cd dh0:editors
  tar xf t:vim90bin.tar
  tar xf t:vim90rt.tar

Set the $VIM environment variable to point to the top directory of your Vim
files.  For the above example:

  set VIM=dh0:editors/vim

Vim version 5.4 will look for your vimrc file in $VIM, and for the runtime
files in $VIM/vim54.  See ":help $VIM" for more information.

Make sure the Vim executable is in your search path.  Either copy the Vim
executable to a directory that is in your search path, or (preferred) modify
the search path to include the directory where the Vim executable is.