patch 8.1.1134: buffer for quickfix window is reused for another file commit https://github.com/vim/vim/commit/39803d82dbb215d2eea9fcd6cf2961b71515a438 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 7 12:04:51 2019 +0200 patch 8.1.1134: buffer for quickfix window is reused for another file Problem: Buffer for quickfix window is reused for another file. Solution: Don't reuse the quickfx buffer. (Yegappan Lakshmanan)

--- a/src/buffer.c
+++ b/src/buffer.c
@@ -1853,6 +1853,7 @@ curbuf_reusable(void)
 	&& curbuf->b_ffname == NULL
 	&& curbuf->b_nwindows <= 1
 	&& (curbuf->b_ml.ml_mfp == NULL || BUFEMPTY())
+	&& !bt_quickfix(curbuf)
 	&& !curbufIsChanged());
 }