patch 8.1.0046: loading a session file fails if 'winheight' is bigv8.1.0046

Problem:    Loading a session file fails if 'winheight' is a big number.
Solution:   Set 'minwinheight' to zero at first.  Don't give an error when
            setting 'minwinheight' while 'winheight' is a big number.
            Fix using vertical splits. Fix setting 'minwinwidth'.
            (closes #2970)

1 files changed, 32 insertions, 8 deletions

diff --git a/src/window.c b/src/window.c
index 74e3c04698..4f4f08b675 100644
--- a/src/window.c
+++ b/src/window.c
@@ -5430,23 +5430,21 @@ frame_setwidth(frame_T *curfrp, int width)
 }
 
 /*
- * Check 'winminheight' for a valid value.
+ * Check 'winminheight' for a valid value and reduce it if needed.
  */
     void
 win_setminheight(void)
 {
     int		room;
+    int		needed;
     int		first = TRUE;
-    win_T	*wp;
 
-    /* loop until there is a 'winminheight' that is possible */
+    // loop until there is a 'winminheight' that is possible
     while (p_wmh > 0)
     {
-	/* TODO: handle vertical splits */
-	room = -p_wh;
-	FOR_ALL_WINDOWS(wp)
-	    room += VISIBLE_HEIGHT(wp) - p_wmh;
-	if (room >= 0)
+	room = Rows - p_ch;
+	needed = frame_minheight(topframe, NULL);
+	if (room >= needed)
 	    break;
 	--p_wmh;
 	if (first)
@@ -5457,6 +5455,32 @@ win_setminheight(void)
     }
 }
 
+/*
+ * Check 'winminwidth' for a valid value and reduce it if needed.
+ */
+    void
+win_setminwidth(void)
+{
+    int		room;
+    int		needed;
+    int		first = TRUE;
+
+    // loop until there is a 'winminheight' that is possible
+    while (p_wmw > 0)
+    {
+	room = Columns;
+	needed = frame_minwidth(topframe, NULL);
+	if (room >= needed)
+	    break;
+	--p_wmw;
+	if (first)
+	{
+	    EMSG(_(e_noroom));
+	    first = FALSE;
+	}
+    }
+}
+
 #if defined(FEAT_MOUSE) || defined(PROTO)
 
 /*