patch 7.4.1858
Problem:    When a channel writes to a buffer it doesn't find a buffer by the
            short name but re-uses it anyway.
Solution:   Find buffer also by the short name.
diff --git a/src/vim.h b/src/vim.h
index a5d05a1..8ce11d6 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -907,9 +907,10 @@
 #define GETF_SWITCH	0x04	/* respect 'switchbuf' settings when jumping */
 
 /* Values for buflist_new() flags */
-#define BLN_CURBUF	1	/* May re-use curbuf for new buffer */
-#define BLN_LISTED	2	/* Put new buffer in buffer list */
-#define BLN_DUMMY	4	/* Allocating dummy buffer */
+#define BLN_CURBUF	1	/* may re-use curbuf for new buffer */
+#define BLN_LISTED	2	/* put new buffer in buffer list */
+#define BLN_DUMMY	4	/* allocating dummy buffer */
+#define BLN_NEW		8	/* create a new buffer */
 
 /* Values for in_cinkeys() */
 #define KEY_OPEN_FORW	0x101