patch 8.2.4052: not easy to resize a window from a plugin
Problem: Not easy to resize a window from a plugin.
Solution: Add win_move_separator() and win_move_statusline() functions.
(Daniel Steinberg, closes #9486)
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 786f9de..2605f6d 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -695,6 +695,8 @@
win_gotoid({expr}) Number go to window with ID {expr}
win_id2tabwin({expr}) List get tab and window nr from window ID
win_id2win({expr}) Number get window nr from window ID
+win_move_separator({nr}) Number move window vertical separator
+win_move_statusline({nr}) Number move window status line
win_screenpos({nr}) List get screen position of window {nr}
win_splitmove({nr}, {target} [, {options}])
Number move window {nr} to split of {target}
@@ -9567,6 +9569,35 @@
Can also be used as a |method|: >
GetWinid()->win_id2win()
+win_move_separator({nr}, {offset}) *win_move_separator()*
+ Move window {nr}'s vertical separator (i.e., the right border)
+ by {offset} columns, as if being dragged by the mouse. {nr}
+ can be a window number or |window-ID|. A positive {offset}
+ moves right and a negative {offset} moves left. Moving a
+ window's vertical separator will change the width of the
+ window and the width of other windows adjacent to the vertical
+ separator. The magnitude of movement may be smaller than
+ specified (e.g., as a consequence of maintaining
+ 'winminwidth'). Returns TRUE if the window can be found and
+ FALSE otherwise.
+
+ Can also be used as a |method|: >
+ GetWinnr()->win_move_separator(offset)
+
+win_move_statusline({nr}, {offset}) *win_move_statusline()*
+ Move window {nr}'s status line (i.e., the bottom border) by
+ {offset} rows, as if being dragged by the mouse. {nr} can be a
+ window number or |window-ID|. A positive {offset} moves down
+ and a negative {offset} moves up. Moving a window's status
+ line will change the height of the window and the height of
+ other windows adjacent to the status line. The magnitude of
+ movement may be smaller than specified (e.g., as a consequence
+ of maintaining 'winminheight'). Returns TRUE if the window can
+ be found and FALSE otherwise.
+
+ Can also be used as a |method|: >
+ GetWinnr()->win_move_statusline(offset)
+
win_screenpos({nr}) *win_screenpos()*
Return the screen position of window {nr} as a list with two
numbers: [row, col]. The first window always has position