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| author | Gregory Heytings <gregory@heytings.org> | 2022-07-16 19:06:38 +0000 |
|---|---|---|
| committer | Gregory Heytings <gregory@heytings.org> | 2022-07-16 21:13:33 +0200 |
| commit | e7b5912b235936b304701ba6b1e808d9b197fd4f (patch) | |
| tree | 78cfbd3ab9c032e45a6ba0f1e763807a01a9a3ec /src/buffer.h | |
| parent | 9de00e5fda2e04316357bd8cf0d8094c63ff171b (diff) | |
| download | emacs-e7b5912b235936b304701ba6b1e808d9b197fd4f.tar.gz | |
Improvements to long lines handling.
* src/buffer.h (struct buffer): New field 'long_line_optimizations_p'.
* src/buffer.c (syms_of_buffer): New variable 'long-line-threshold'.
(reset_buffer): Initialize the 'long_line_optimizations_p' field.
(Fbuffer_swap_text): Handle it.
* src/xdisp.c (redisplay_window): Set 'long_line_optimizations_p' when
a buffer contains long lines.
(init_iterator): Use 'long_line_optimizations_p'.
(get_narrowed_begv): Update.
(SET_WITH_NARROWED_BEGV): New macro.
(unwind_narrowed_begv): New internal function used by the new macro.
(back_to_previous_line_start, get_visually_first_element,
move_it_vertically_backward): Use the new macro.
* src/search.c (find_newline1): Make it externally visible.
* src/lisp.h: Make 'find_newline1' externally visible.
* src/dispextern.h (struct it): Update comment. Remove the
'WITH_NARROWED_BEGV' macro.
* etc/NEWS: Mention the 'long-line-threshold' variable.
Diffstat (limited to 'src/buffer.h')
| -rw-r--r-- | src/buffer.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/buffer.h b/src/buffer.h index 135eaf72d30..09daa29992a 100644 --- a/src/buffer.h +++ b/src/buffer.h @@ -681,6 +681,10 @@ struct buffer defined, as well as by with-temp-buffer, for example. */ bool_bf inhibit_buffer_hooks : 1; + /* Non-zero when the buffer contains long lines and specific + display optimizations must be used. */ + bool_bf long_line_optimizations_p : 1; + /* List of overlays that end at or before the current center, in order of end-position. */ struct Lisp_Overlay *overlays_before; |