From e12f351912eb07a6cd49d5faf9ae3d90ba0c8d47 Mon Sep 17 00:00:00 2001 From: "Eric S. Raymond" Date: Fri, 23 Apr 1993 03:06:10 +0000 Subject: [PATCH] (BUF_NARROWED, NARROWED): New macros to test whether a region restriction has narrowed the buffer. --- src/buffer.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/buffer.h b/src/buffer.h index 5c09f30c40b..34d92fd61c7 100644 --- a/src/buffer.h +++ b/src/buffer.h @@ -53,6 +53,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Character position of end of buffer. */ #define Z (current_buffer->text.z) +/* Is the current buffer narrowed? */ +#define NARROWED ((BEGV != BEG) || (ZV != Z)) + /* Modification count. */ #define MODIFF (current_buffer->text.modiff) @@ -98,6 +101,10 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Character position of end of buffer. */ #define BUF_Z(buf) ((buf)->text.z) +/* Is this buffer narrowed? */ +#define BUF_NARROWED(buf) ((BUF_BEGV(buf) != BUF_BEG(buf)) \ + || (BUF_ZV(buf) != BUF_Z(buf))) + /* Modification count. */ #define BUF_MODIFF(buf) ((buf)->text.modiff) -- 2.30.2