prefer the pane for which the border is the status line. With Dane
Jensen.

them - previously we were ending up with four codepoints in one cell
which tmux believed to be width 2, but terminals considered width 4.
Secondly, invalidate cursor position before redrawing the cell when the
second codepoint is received, terminals vary in how they manage
backspace and cursor movement across these characters, so it is better
to use absolute rather than relative positioning. GitHub issue 4853.

windows to match sessions and panes as newest first.

missing bottom status pane status line when floating panes exist.

- Fix the active pane colour when only two panes and scrollbars enabled.

- Clip left and right scrollbars the same for floating panes.

- Do not subtract scrollbar width twice when working out width of status
  line.

- Check if a character is inside a visible range correctly (do not
  include the next position outside the range).

characters that are not plain ASCII. Fixes redraw issues with partial
tabs and other wide characters when a pane is partly outside the window.

temporaries for start and end of range.

…ler.

the same as vi with virtualedit=block set. From Mark Kelly in GitHub
issue 5227.

immediately when possible, but allow # again for those directly set by
commands (but not escape sequences). From Barrett Ruth in GitHub issue
5175.