1 files changed, 18 insertions, 17 deletions

diff --git a/src/buffer.c b/src/buffer.c
index 07723a7c6ff..755061d0dee 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5918,18 +5918,18 @@ There is no reason to change that value except for debugging purposes.  */);
 
   DEFVAR_INT ("long-line-optimizations-region-size",
 	      long_line_optimizations_region_size,
-	      doc: /* Region size for locked narrowing in buffers with long lines.
+	      doc: /* Region size for narrowing in buffers with long lines.
 
-This variable has effect only in buffers which contain one or more
-lines whose length is above `long-line-threshold', which see.  For
-performance reasons, in such buffers, low-level hooks such as
-`fontification-functions' or `post-command-hook' are executed on a
-narrowed buffer, with a narrowing locked with `narrowing-lock'.  This
-variable specifies the size of the narrowed region around point.
+This variable has effect only in buffers in which
+`long-line-optimizations-p' is non-nil.  For performance reasons, in
+such buffers, the `fontification-functions', `pre-command-hook' and
+`post-command-hook' hooks are executed on a narrowed buffer around
+point, as if they were called in a `with-narrowing' form with a label.
+This variable specifies the size of the narrowed region around point.
 
 To disable that narrowing, set this variable to 0.
 
-See also `long-line-locked-narrowing-bol-search-limit'.
+See also `long-line-optimizations-bol-search-limit'.
 
 There is no reason to change that value except for debugging purposes.  */);
   long_line_optimizations_region_size = 500000;
@@ -5938,15 +5938,16 @@ There is no reason to change that value except for debugging purposes.  */);
 	      long_line_optimizations_bol_search_limit,
 	      doc: /* Limit for beginning of line search in buffers with long lines.
 
-This variable has effect only in buffers which contain one or more
-lines whose length is above `long-line-threshold', which see.  For
-performance reasons, in such buffers, low-level hooks such as
-`fontification-functions' or `post-command-hook' are executed on a
-narrowed buffer, with a narrowing locked with `narrowing-lock'.  The
-variable `long-line-locked-narrowing-region-size' specifies the size
-of the narrowed region around point.  This variable, which should be a
-small integer, specifies the number of characters by which that region
-can be extended backwards to make it start at the beginning of a line.
+This variable has effect only in buffers in which
+`long-line-optimizations-p' is non-nil.  For performance reasons, in
+such buffers, the `fontification-functions', `pre-command-hook' and
+`post-command-hook' hooks are executed on a narrowed buffer around
+point, as if they were called in a `with-narrowing' form with a label.
+The variable `long-line-optimizations-region-size' specifies the
+size of the narrowed region around point.  This variable, which should
+be a small integer, specifies the number of characters by which that
+region can be extended backwards to make it start at the beginning of
+a line.
 
 There is no reason to change that value except for debugging purposes.  */);
   long_line_optimizations_bol_search_limit = 128;