Convenient macro to check whether the buffer is live.

* buffer.h (BUFFER_LIVE_P): New macro.
* alloc.c, buffer.c, editfns.c, insdel.c, lread.c, marker.c:
* minibuf.c, print.c, process.c, window.c, xdisp.c: Use it.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/buffer.h b/src/buffer.h
index da40a7ce3d8..d18ef30ea38 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -959,7 +959,10 @@ bset_width_table (struct buffer *b, Lisp_Object val)
   b->INTERNAL_FIELD (width_table) = val;
 }
 
-
+/* Convenient check whether buffer B is live.  */
+
+#define BUFFER_LIVE_P(b) (!NILP (BVAR (b, name)))
+
 /* Chain of all buffers, including killed ones.  */
 
 extern struct buffer *all_buffers;