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>

" Vim syntax file
" Language:	Windows Scripting Host
" Maintainer:	Paul Moore <pf_moore AT yahoo.co.uk>
" Last Change:	Fre, 24 Nov 2000 21:54:09 +0100

" This reuses the XML, VB and JavaScript syntax files. While VB is not
" VBScript, it's close enough for us. No attempt is made to handle
" other languages.
" Send comments, suggestions and requests to the maintainer.

" Quit when a syntax file was already loaded
if exists("b:current_syntax")
  finish
endif

let s:wsh_cpo_save = &cpo
set cpo&vim

runtime! syntax/xml.vim
unlet b:current_syntax

syn case ignore
syn include @wshVBScript <sfile>:p:h/vb.vim
unlet b:current_syntax
syn include @wshJavaScript <sfile>:p:h/javascript.vim
unlet b:current_syntax
syn region wshVBScript
    \ matchgroup=xmlTag    start="<script[^>]*VBScript\(>\|[^>]*[^/>]>\)"
    \ matchgroup=xmlEndTag end="</script>"
    \ fold
    \ contains=@wshVBScript
    \ keepend
syn region wshJavaScript
    \ matchgroup=xmlTag    start="<script[^>]*J\(ava\)\=Script\(>\|[^>]*[^/>]>\)"
    \ matchgroup=xmlEndTag end="</script>"
    \ fold
    \ contains=@wshJavaScript
    \ keepend

syn cluster xmlRegionHook add=wshVBScript,wshJavaScript

let b:current_syntax = "wsh"

let &cpo = s:wsh_cpo_save
unlet s:wsh_cpo_save