commit dc7179f9a4cc74d864d1f6414e691d25bac8f831
author Christopher Plewright <chris@createng.com> Mon Jan 23 12:33:23 2023 +0000
committer Bram Moolenaar <Bram@vim.org> Mon Jan 23 12:33:23 2023 +0000
tree 4ae1b75eed477cbdad0f92cb241c6c12b52f689b
parent ebfec1c531f32d424bb2aca6e7391ef3bfcbfe20

patch 9.0.1235: MS-Windows console: not flushing termguicolors

Problem:    MS-Windows console: not flushing termguicolors.
Solution:   Flush termguicolors. (Christopher Plewright, closes #11871)

src/os_win32.c

diff --git a/src/os_win32.c b/src/os_win32.c
index ba5d228..e80533b 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -6776,20 +6776,30 @@
     WORD    attrFlash = ~g_attrCurrent & 0xff;
 
     DWORD   dwDummy;
-    LPWORD  oldattrs = ALLOC_MULT(WORD, Rows * Columns);
+    LPWORD  oldattrs = NULL;
 
-    if (oldattrs == NULL)
-	return;
-    ReadConsoleOutputAttribute(g_hConOut, oldattrs, Rows * Columns,
+# ifdef FEAT_TERMGUICOLORS
+    if (!(p_tgc || t_colors >= 256))
+# endif
+    {
+	oldattrs = ALLOC_MULT(WORD, Rows * Columns);
+	if (oldattrs == NULL)
+	    return;
+	ReadConsoleOutputAttribute(g_hConOut, oldattrs, Rows * Columns,
 			       coordOrigin, &dwDummy);
+    }
+
     FillConsoleOutputAttribute(g_hConOut, attrFlash, Rows * Columns,
 			       coordOrigin, &dwDummy);
 
     Sleep(15);	    // wait for 15 msec
-    if (!vtp_working)
+
+    if (oldattrs != NULL)
+    {
 	WriteConsoleOutputAttribute(g_hConOut, oldattrs, Rows * Columns,
 				coordOrigin, &dwDummy);
-    vim_free(oldattrs);
+	vim_free(oldattrs);
+    }
 }
 
 
@@ -8665,12 +8675,6 @@
     wt_working = mch_getenv("WT_SESSION") != NULL;
 }
 
-    int
-use_wt(void)
-{
-    return USE_WT;
-}
-
 # ifdef FEAT_TERMGUICOLORS
     static int
 ctermtoxterm(