patch 8.1.2303: cursor in wrong position after horizontal scroll
Problem: Cursor in wrong position after horizontal scroll.
Solution: Set w_valid_leftcol. (closes #5214, closes #5224)
diff --git a/src/testdir/test_matchadd_conceal.vim b/src/testdir/test_matchadd_conceal.vim
index 83eadce..25bff3d 100644
--- a/src/testdir/test_matchadd_conceal.vim
+++ b/src/testdir/test_matchadd_conceal.vim
@@ -316,3 +316,31 @@
call StopVimInTerminal(buf)
call delete('Xcolesearch')
endfunc
+
+func Test_cursor_column_in_concealed_line_after_leftcol_change()
+ CheckRunVimInTerminal
+
+ " Test for issue #5214 fix.
+ let lines =<< trim END
+ 0put = 'ab' .. repeat('-', &columns) .. 'c'
+ call matchadd('Conceal', '-')
+ set nowrap ss=0 cole=3 cocu=n
+ END
+ call writefile(lines, 'Xcurs-columns')
+ let buf = RunVimInTerminal('-S Xcurs-columns', {})
+
+ " Go to the end of the line (3 columns beyond the end of the screen).
+ " Horizontal scroll would center the cursor in the screen line, but conceal
+ " makes it go to screen column 1.
+ call term_sendkeys(buf, "$")
+ call term_wait(buf)
+
+ " Are the concealed parts of the current line really hidden?
+ call assert_equal('c', term_getline(buf, '.'))
+
+ " BugFix check: Is the window's cursor column properly updated for conceal?
+ call assert_equal(1, term_getcursor(buf)[1])
+
+ call StopVimInTerminal(buf)
+ call delete('Xcurs-columns')
+endfunc