Mercurial > hg > xemacs-beta
annotate lisp/text-mode.el @ 5127:a9c41067dd88 ben-lisp-object
more cleanups, terminology clarification, lots of doc work
-------------------- ChangeLog entries follow: --------------------
man/ChangeLog addition:
2010-03-05 Ben Wing <ben@xemacs.org>
* internals/internals.texi (Introduction to Allocation):
* internals/internals.texi (Integers and Characters):
* internals/internals.texi (Allocation from Frob Blocks):
* internals/internals.texi (lrecords):
* internals/internals.texi (Low-level allocation):
Rewrite section on allocation of Lisp objects to reflect the new
reality. Remove references to nonexistent XSETINT and XSETCHAR.
modules/ChangeLog addition:
2010-03-05 Ben Wing <ben@xemacs.org>
* postgresql/postgresql.c (allocate_pgconn):
* postgresql/postgresql.c (allocate_pgresult):
* postgresql/postgresql.h (struct Lisp_PGconn):
* postgresql/postgresql.h (struct Lisp_PGresult):
* ldap/eldap.c (allocate_ldap):
* ldap/eldap.h (struct Lisp_LDAP):
Same changes as in src/ dir. See large log there in ChangeLog,
but basically:
ALLOC_LISP_OBJECT -> ALLOC_NORMAL_LISP_OBJECT
LISP_OBJECT_HEADER -> NORMAL_LISP_OBJECT_HEADER
../hlo/src/ChangeLog addition:
2010-03-05 Ben Wing <ben@xemacs.org>
* alloc.c:
* alloc.c (old_alloc_sized_lcrecord):
* alloc.c (very_old_free_lcrecord):
* alloc.c (copy_lisp_object):
* alloc.c (zero_sized_lisp_object):
* alloc.c (zero_nonsized_lisp_object):
* alloc.c (lisp_object_storage_size):
* alloc.c (free_normal_lisp_object):
* alloc.c (FREE_FIXED_TYPE_WHEN_NOT_IN_GC):
* alloc.c (ALLOC_FROB_BLOCK_LISP_OBJECT):
* alloc.c (Fcons):
* alloc.c (noseeum_cons):
* alloc.c (make_float):
* alloc.c (make_bignum):
* alloc.c (make_bignum_bg):
* alloc.c (make_ratio):
* alloc.c (make_ratio_bg):
* alloc.c (make_ratio_rt):
* alloc.c (make_bigfloat):
* alloc.c (make_bigfloat_bf):
* alloc.c (size_vector):
* alloc.c (make_compiled_function):
* alloc.c (Fmake_symbol):
* alloc.c (allocate_extent):
* alloc.c (allocate_event):
* alloc.c (make_key_data):
* alloc.c (make_button_data):
* alloc.c (make_motion_data):
* alloc.c (make_process_data):
* alloc.c (make_timeout_data):
* alloc.c (make_magic_data):
* alloc.c (make_magic_eval_data):
* alloc.c (make_eval_data):
* alloc.c (make_misc_user_data):
* alloc.c (Fmake_marker):
* alloc.c (noseeum_make_marker):
* alloc.c (size_string_direct_data):
* alloc.c (make_uninit_string):
* alloc.c (make_string_nocopy):
* alloc.c (mark_lcrecord_list):
* alloc.c (alloc_managed_lcrecord):
* alloc.c (free_managed_lcrecord):
* alloc.c (sweep_lcrecords_1):
* alloc.c (malloced_storage_size):
* buffer.c (allocate_buffer):
* buffer.c (compute_buffer_usage):
* buffer.c (DEFVAR_BUFFER_LOCAL_1):
* buffer.c (nuke_all_buffer_slots):
* buffer.c (common_init_complex_vars_of_buffer):
* buffer.h (struct buffer_text):
* buffer.h (struct buffer):
* bytecode.c:
* bytecode.c (make_compiled_function_args):
* bytecode.c (size_compiled_function_args):
* bytecode.h (struct compiled_function_args):
* casetab.c (allocate_case_table):
* casetab.h (struct Lisp_Case_Table):
* charset.h (struct Lisp_Charset):
* chartab.c (fill_char_table):
* chartab.c (Fmake_char_table):
* chartab.c (make_char_table_entry):
* chartab.c (copy_char_table_entry):
* chartab.c (Fcopy_char_table):
* chartab.c (put_char_table):
* chartab.h (struct Lisp_Char_Table_Entry):
* chartab.h (struct Lisp_Char_Table):
* console-gtk-impl.h (struct gtk_device):
* console-gtk-impl.h (struct gtk_frame):
* console-impl.h (struct console):
* console-msw-impl.h (struct Lisp_Devmode):
* console-msw-impl.h (struct mswindows_device):
* console-msw-impl.h (struct msprinter_device):
* console-msw-impl.h (struct mswindows_frame):
* console-msw-impl.h (struct mswindows_dialog_id):
* console-stream-impl.h (struct stream_console):
* console-stream.c (stream_init_console):
* console-tty-impl.h (struct tty_console):
* console-tty-impl.h (struct tty_device):
* console-tty.c (allocate_tty_console_struct):
* console-x-impl.h (struct x_device):
* console-x-impl.h (struct x_frame):
* console.c (allocate_console):
* console.c (nuke_all_console_slots):
* console.c (DEFVAR_CONSOLE_LOCAL_1):
* console.c (common_init_complex_vars_of_console):
* data.c (make_weak_list):
* data.c (make_weak_box):
* data.c (make_ephemeron):
* database.c:
* database.c (struct Lisp_Database):
* database.c (allocate_database):
* database.c (finalize_database):
* device-gtk.c (allocate_gtk_device_struct):
* device-impl.h (struct device):
* device-msw.c:
* device-msw.c (mswindows_init_device):
* device-msw.c (msprinter_init_device):
* device-msw.c (finalize_devmode):
* device-msw.c (allocate_devmode):
* device-tty.c (allocate_tty_device_struct):
* device-x.c (allocate_x_device_struct):
* device.c:
* device.c (nuke_all_device_slots):
* device.c (allocate_device):
* dialog-msw.c (handle_question_dialog_box):
* elhash.c:
* elhash.c (struct Lisp_Hash_Table):
* elhash.c (finalize_hash_table):
* elhash.c (make_general_lisp_hash_table):
* elhash.c (Fcopy_hash_table):
* elhash.h (htentry):
* emacs.c (main_1):
* eval.c:
* eval.c (size_multiple_value):
* event-stream.c (finalize_command_builder):
* event-stream.c (allocate_command_builder):
* event-stream.c (free_command_builder):
* event-stream.c (event_stream_generate_wakeup):
* event-stream.c (event_stream_resignal_wakeup):
* event-stream.c (event_stream_disable_wakeup):
* event-stream.c (event_stream_wakeup_pending_p):
* events.h (struct Lisp_Timeout):
* events.h (struct command_builder):
* extents-impl.h:
* extents-impl.h (struct extent_auxiliary):
* extents-impl.h (struct extent_info):
* extents-impl.h (set_extent_no_chase_aux_field):
* extents-impl.h (set_extent_no_chase_normal_field):
* extents.c:
* extents.c (gap_array_marker):
* extents.c (gap_array):
* extents.c (extent_list_marker):
* extents.c (extent_list):
* extents.c (stack_of_extents):
* extents.c (gap_array_make_marker):
* extents.c (extent_list_make_marker):
* extents.c (allocate_extent_list):
* extents.c (SLOT):
* extents.c (mark_extent_auxiliary):
* extents.c (allocate_extent_auxiliary):
* extents.c (attach_extent_auxiliary):
* extents.c (size_gap_array):
* extents.c (finalize_extent_info):
* extents.c (allocate_extent_info):
* extents.c (uninit_buffer_extents):
* extents.c (allocate_soe):
* extents.c (copy_extent):
* extents.c (vars_of_extents):
* extents.h:
* faces.c (allocate_face):
* faces.h (struct Lisp_Face):
* faces.h (struct face_cachel):
* file-coding.c:
* file-coding.c (finalize_coding_system):
* file-coding.c (sizeof_coding_system):
* file-coding.c (Fcopy_coding_system):
* file-coding.h (struct Lisp_Coding_System):
* file-coding.h (MARKED_SLOT):
* fns.c (size_bit_vector):
* font-mgr.c:
* font-mgr.c (finalize_fc_pattern):
* font-mgr.c (print_fc_pattern):
* font-mgr.c (Ffc_pattern_p):
* font-mgr.c (Ffc_pattern_create):
* font-mgr.c (Ffc_name_parse):
* font-mgr.c (Ffc_name_unparse):
* font-mgr.c (Ffc_pattern_duplicate):
* font-mgr.c (Ffc_pattern_add):
* font-mgr.c (Ffc_pattern_del):
* font-mgr.c (Ffc_pattern_get):
* font-mgr.c (fc_config_create_using):
* font-mgr.c (fc_strlist_to_lisp_using):
* font-mgr.c (fontset_to_list):
* font-mgr.c (Ffc_config_p):
* font-mgr.c (Ffc_config_up_to_date):
* font-mgr.c (Ffc_config_build_fonts):
* font-mgr.c (Ffc_config_get_cache):
* font-mgr.c (Ffc_config_get_fonts):
* font-mgr.c (Ffc_config_set_current):
* font-mgr.c (Ffc_config_get_blanks):
* font-mgr.c (Ffc_config_get_rescan_interval):
* font-mgr.c (Ffc_config_set_rescan_interval):
* font-mgr.c (Ffc_config_app_font_add_file):
* font-mgr.c (Ffc_config_app_font_add_dir):
* font-mgr.c (Ffc_config_app_font_clear):
* font-mgr.c (size):
* font-mgr.c (Ffc_config_substitute):
* font-mgr.c (Ffc_font_render_prepare):
* font-mgr.c (Ffc_font_match):
* font-mgr.c (Ffc_font_sort):
* font-mgr.c (finalize_fc_config):
* font-mgr.c (print_fc_config):
* font-mgr.h:
* font-mgr.h (struct fc_pattern):
* font-mgr.h (XFC_PATTERN):
* font-mgr.h (struct fc_config):
* font-mgr.h (XFC_CONFIG):
* frame-gtk.c (allocate_gtk_frame_struct):
* frame-impl.h (struct frame):
* frame-msw.c (mswindows_init_frame_1):
* frame-x.c (allocate_x_frame_struct):
* frame.c (nuke_all_frame_slots):
* frame.c (allocate_frame_core):
* gc.c:
* gc.c (GC_CHECK_NOT_FREE):
* glyphs.c (finalize_image_instance):
* glyphs.c (allocate_image_instance):
* glyphs.c (Fcolorize_image_instance):
* glyphs.c (allocate_glyph):
* glyphs.c (unmap_subwindow_instance_cache_mapper):
* glyphs.c (register_ignored_expose):
* glyphs.h (struct Lisp_Image_Instance):
* glyphs.h (struct Lisp_Glyph):
* glyphs.h (struct glyph_cachel):
* glyphs.h (struct expose_ignore):
* gui.c (allocate_gui_item):
* gui.h (struct Lisp_Gui_Item):
* keymap.c (struct Lisp_Keymap):
* keymap.c (make_keymap):
* lisp.h:
* lisp.h (struct Lisp_String_Direct_Data):
* lisp.h (struct Lisp_String_Indirect_Data):
* lisp.h (struct Lisp_Vector):
* lisp.h (struct Lisp_Bit_Vector):
* lisp.h (DECLARE_INLINE_LISP_BIT_VECTOR):
* lisp.h (struct weak_box):
* lisp.h (struct ephemeron):
* lisp.h (struct weak_list):
* lrecord.h:
* lrecord.h (struct lrecord_implementation):
* lrecord.h (MC_ALLOC_CALL_FINALIZER):
* lrecord.h (struct lcrecord_list):
* lstream.c (finalize_lstream):
* lstream.c (sizeof_lstream):
* lstream.c (Lstream_new):
* lstream.c (Lstream_delete):
* lstream.h (struct lstream):
* marker.c:
* marker.c (finalize_marker):
* marker.c (compute_buffer_marker_usage):
* mule-charset.c:
* mule-charset.c (make_charset):
* mule-charset.c (compute_charset_usage):
* objects-impl.h (struct Lisp_Color_Instance):
* objects-impl.h (struct Lisp_Font_Instance):
* objects-tty-impl.h (struct tty_color_instance_data):
* objects-tty-impl.h (struct tty_font_instance_data):
* objects-tty.c (tty_initialize_color_instance):
* objects-tty.c (tty_initialize_font_instance):
* objects.c (finalize_color_instance):
* objects.c (Fmake_color_instance):
* objects.c (finalize_font_instance):
* objects.c (Fmake_font_instance):
* objects.c (reinit_vars_of_objects):
* opaque.c:
* opaque.c (sizeof_opaque):
* opaque.c (make_opaque_ptr):
* opaque.c (free_opaque_ptr):
* opaque.h:
* opaque.h (Lisp_Opaque):
* opaque.h (Lisp_Opaque_Ptr):
* print.c (printing_unreadable_lcrecord):
* print.c (external_object_printer):
* print.c (debug_p4):
* process.c (finalize_process):
* process.c (make_process_internal):
* procimpl.h (struct Lisp_Process):
* rangetab.c (Fmake_range_table):
* rangetab.c (Fcopy_range_table):
* rangetab.h (struct Lisp_Range_Table):
* scrollbar.c:
* scrollbar.c (create_scrollbar_instance):
* scrollbar.c (compute_scrollbar_instance_usage):
* scrollbar.h (struct scrollbar_instance):
* specifier.c (finalize_specifier):
* specifier.c (sizeof_specifier):
* specifier.c (set_specifier_caching):
* specifier.h (struct Lisp_Specifier):
* specifier.h (struct specifier_caching):
* symeval.h:
* symeval.h (SYMBOL_VALUE_MAGIC_P):
* symeval.h (DEFVAR_SYMVAL_FWD):
* symsinit.h:
* syntax.c (init_buffer_syntax_cache):
* syntax.h (struct syntax_cache):
* toolbar.c:
* toolbar.c (allocate_toolbar_button):
* toolbar.c (update_toolbar_button):
* toolbar.h (struct toolbar_button):
* tooltalk.c (struct Lisp_Tooltalk_Message):
* tooltalk.c (make_tooltalk_message):
* tooltalk.c (struct Lisp_Tooltalk_Pattern):
* tooltalk.c (make_tooltalk_pattern):
* ui-gtk.c:
* ui-gtk.c (allocate_ffi_data):
* ui-gtk.c (emacs_gtk_object_finalizer):
* ui-gtk.c (allocate_emacs_gtk_object_data):
* ui-gtk.c (allocate_emacs_gtk_boxed_data):
* ui-gtk.h:
* window-impl.h (struct window):
* window-impl.h (struct window_mirror):
* window.c (finalize_window):
* window.c (allocate_window):
* window.c (new_window_mirror):
* window.c (mark_window_as_deleted):
* window.c (make_dummy_parent):
* window.c (compute_window_mirror_usage):
* window.c (compute_window_usage):
Overall point of this change and previous ones in this repository:
(1) Introduce new, clearer terminology: everything other than int
or char is a "record" object, which comes in two types: "normal
objects" and "frob-block objects". Fix up all places that
referred to frob-block objects as "simple", "basic", etc.
(2) Provide an advertised interface for doing operations on Lisp
objects, including creating new types, that is clean and
consistent in its naming, uses the above-referenced terms and
avoids referencing "lrecords", "old lcrecords", etc., which should
hide under the surface.
(3) Make the size_in_bytes and finalizer methods take a
Lisp_Object rather than a void * for consistency with other methods.
(4) Separate finalizer method into finalizer and disksaver, so
that normal finalize methods don't have to worry about disksaving.
Other specifics:
(1) Renaming:
LISP_OBJECT_HEADER -> NORMAL_LISP_OBJECT_HEADER
ALLOC_LISP_OBJECT -> ALLOC_NORMAL_LISP_OBJECT
implementation->basic_p -> implementation->frob_block_p
ALLOCATE_FIXED_TYPE_AND_SET_IMPL -> ALLOC_FROB_BLOCK_LISP_OBJECT
*FCCONFIG*, wrap_fcconfig -> *FC_CONFIG*, wrap_fc_config
*FCPATTERN*, wrap_fcpattern -> *FC_PATTERN*, wrap_fc_pattern
(the last two changes make the naming of these macros consistent
with the naming of all other macros, since the objects are named
fc-config and fc-pattern with a hyphen)
(2) Lots of documentation fixes in lrecord.h.
(3) Eliminate macros for copying, freeing, zeroing objects, getting
their storage size. Instead, new functions:
zero_sized_lisp_object()
zero_nonsized_lisp_object()
lisp_object_storage_size()
free_normal_lisp_object()
(copy_lisp_object() already exists)
LISP_OBJECT_FROB_BLOCK_P() (actually a macro)
Eliminated:
free_lrecord()
zero_lrecord()
copy_lrecord()
copy_sized_lrecord()
old_copy_lcrecord()
old_copy_sized_lcrecord()
old_zero_lcrecord()
old_zero_sized_lcrecord()
LISP_OBJECT_STORAGE_SIZE()
COPY_SIZED_LISP_OBJECT()
COPY_SIZED_LCRECORD()
COPY_LISP_OBJECT()
ZERO_LISP_OBJECT()
FREE_LISP_OBJECT()
(4) Catch the remaining places where lrecord stuff was used directly
and use the advertised interface, e.g. alloc_sized_lrecord() ->
ALLOC_SIZED_LISP_OBJECT().
(5) Make certain statically-declared pseudo-objects
(buffer_local_flags, console_local_flags) have their lheader
initialized correctly, so things like copy_lisp_object() can work
on them. Make extent_auxiliary_defaults a proper heap object
Vextent_auxiliary_defaults, and make extent auxiliaries dumpable
so that this object can be dumped. allocate_extent_auxiliary()
now just creates the object, and attach_extent_auxiliary()
creates an extent auxiliary and attaches to an extent, like the
old allocate_extent_auxiliary().
(6) Create EXTENT_AUXILIARY_SLOTS macro, similar to the foo-slots.h
files but in a macro instead of a file. The purpose is to avoid
duplication when iterating over all the slots in an extent auxiliary.
Use it.
(7) In lstream.c, don't zero out object after allocation because
allocation routines take care of this.
(8) In marker.c, fix a mistake in computing marker overhead.
(9) In print.c, clean up printing_unreadable_lcrecord(),
external_object_printer() to avoid lots of ifdef NEW_GC's.
(10) Separate toolbar-button allocation into a separate
allocate_toolbar_button() function for use in the example code
in lrecord.h.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Fri, 05 Mar 2010 04:08:17 -0600 |
| parents | 3ecd8885ac67 |
| children | 308d34e9f07d |
| rev | line source |
|---|---|
| 428 | 1 ;;; text-mode.el --- text mode, and its idiosyncratic commands. |
| 2 | |
| 3 ;; Copyright (C) 1985, 1992, 1994, 1997 Free Software Foundation, Inc. | |
| 4 | |
| 5 ;; Maintainer: FSF | |
| 6 ;; Keywords: wp, dumped | |
| 7 | |
| 8 ;; This file is part of XEmacs. | |
| 9 | |
| 10 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 11 ;; under the terms of the GNU General Public License as published by | |
| 12 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 13 ;; any later version. | |
| 14 | |
| 15 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 ;; General Public License for more details. | |
| 19 | |
| 20 ;; You should have received a copy of the GNU General Public License | |
| 21 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
| 22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
| 23 ;; 02111-1307, USA. | |
| 24 | |
| 25 ;;; Synched up with: FSF 20.2. | |
| 26 | |
| 27 ;;; Commentary: | |
| 28 | |
| 29 ;; This file is dumped with XEmacs. | |
| 30 | |
| 31 ;; This package provides the fundamental text mode documented in the | |
| 32 ;; Emacs user's manual. | |
| 33 | |
| 34 ;;; Code: | |
| 35 | |
| 36 (defvar text-mode-hook nil | |
| 37 "Normal hook run when entering Text mode and many related modes.") | |
| 38 | |
| 39 (defvar text-mode-variant nil | |
| 40 "Non-nil if this buffer's major mode is a variant of Text mode.") | |
| 41 | |
| 42 (defvar text-mode-syntax-table nil | |
| 43 "Syntax table used while in text mode.") | |
| 44 | |
| 45 (defvar text-mode-abbrev-table nil | |
| 46 "Abbrev table used while in text mode.") | |
| 47 (define-abbrev-table 'text-mode-abbrev-table ()) | |
| 48 | |
| 49 (if text-mode-syntax-table | |
| 50 () | |
| 51 (setq text-mode-syntax-table (make-syntax-table)) | |
| 52 (modify-syntax-entry ?\" ". " text-mode-syntax-table) | |
| 53 (modify-syntax-entry ?\\ ". " text-mode-syntax-table) | |
| 54 (modify-syntax-entry ?' "w " text-mode-syntax-table)) | |
| 55 | |
| 56 (defvar text-mode-map nil | |
| 57 "Keymap for Text mode. | |
| 58 Many other modes, such as Mail mode, Outline mode and Indented Text mode, | |
| 59 inherit all the commands defined in this map.") | |
| 60 | |
| 61 (if text-mode-map | |
| 62 () | |
| 63 (setq text-mode-map (make-sparse-keymap)) | |
| 64 ;; XEmacs change | |
| 65 (set-keymap-name text-mode-map 'text-mode-map) | |
| 66 (define-key text-mode-map "\e\t" 'ispell-complete-word) | |
| 67 (define-key text-mode-map "\t" 'indent-relative) | |
| 68 (define-key text-mode-map "\es" 'center-line) | |
| 69 (define-key text-mode-map "\eS" 'center-paragraph)) | |
| 70 | |
| 71 | |
| 72 (defun text-mode () | |
| 73 "Major mode for editing text written for humans to read. | |
| 74 In this mode, paragraphs are delimited only by blank or white lines. | |
| 75 You can thus get the full benefit of adaptive filling | |
| 76 (see the variable `adaptive-fill-mode'). | |
| 77 \\{text-mode-map} | |
| 78 Turning on Text mode runs the normal hook `text-mode-hook'." | |
| 79 (interactive) | |
| 80 (kill-all-local-variables) | |
| 81 (use-local-map text-mode-map) | |
| 82 (setq local-abbrev-table text-mode-abbrev-table) | |
| 83 (set-syntax-table text-mode-syntax-table) | |
| 84 (make-local-variable 'paragraph-start) | |
| 85 (setq paragraph-start (concat page-delimiter "\\|[ \t]*$")) | |
| 86 (make-local-variable 'paragraph-separate) | |
| 87 (setq paragraph-separate paragraph-start) | |
| 88 (setq mode-name "Text") | |
| 89 (setq major-mode 'text-mode) | |
| 90 (run-hooks 'text-mode-hook)) | |
| 91 | |
| 92 (defun paragraph-indent-text-mode () | |
| 93 "Major mode for editing text, with leading spaces starting a paragraph. | |
| 94 In this mode, you do not need blank lines between paragraphs | |
| 95 when the first line of the following paragraph starts with whitespace. | |
| 96 Special commands: | |
| 97 \\{text-mode-map} | |
| 98 Turning on Paragraph-Indent Text mode runs the normal hooks | |
| 99 `text-mode-hook' and `paragraph-indent-text-mode-hook'." | |
| 100 (interactive) | |
| 101 (kill-all-local-variables) | |
| 102 (use-local-map text-mode-map) | |
| 103 (setq mode-name "Parindent") | |
| 104 (setq major-mode 'paragraph-indent-text-mode) | |
| 105 (setq local-abbrev-table text-mode-abbrev-table) | |
| 106 (set-syntax-table text-mode-syntax-table) | |
| 107 (run-hooks 'text-mode-hook 'paragraph-indent-text-mode-hook)) | |
| 108 | |
| 109 (defalias 'indented-text-mode 'text-mode) | |
| 110 | |
| 111 (defun text-mode-hook-identify () | |
| 112 "Mark that this mode has run `text-mode-hook'. | |
| 113 This is how `toggle-text-mode-auto-fill' knows which buffers to operate on." | |
| 114 (make-local-variable 'text-mode-variant) | |
| 115 (setq text-mode-variant t)) | |
| 116 | |
| 117 (add-hook 'text-mode-hook 'text-mode-hook-identify) | |
| 118 | |
| 119 (defun toggle-text-mode-auto-fill () | |
| 120 "Toggle whether to use Auto Fill in Text mode and related modes. | |
| 121 This command affects all buffers that use modes related to Text mode, | |
| 122 both existing buffers and buffers that you subsequently create." | |
| 123 (interactive) | |
| 124 (let ((enable-mode (not (memq 'turn-on-auto-fill text-mode-hook))) | |
| 125 (buffers (buffer-list))) | |
| 126 (if enable-mode | |
| 127 (add-hook 'text-mode-hook 'turn-on-auto-fill) | |
| 128 (remove-hook 'text-mode-hook 'turn-on-auto-fill)) | |
| 129 (while buffers | |
| 130 (with-current-buffer (car buffers) | |
| 131 (if text-mode-variant | |
| 132 (auto-fill-mode (if enable-mode 1 0)))) | |
| 133 (setq buffers (cdr buffers))) | |
| 134 (message "Auto Fill %s in Text modes" | |
| 135 (if enable-mode "enabled" "disabled")))) | |
| 136 | |
| 137 (defun center-paragraph () | |
| 138 "Center each nonblank line in the paragraph at or after point. | |
| 139 See `center-line' for more info." | |
| 140 (interactive) | |
| 141 (save-excursion | |
| 142 (forward-paragraph) | |
| 143 (or (bolp) (newline 1)) | |
| 144 (let ((end (point))) | |
| 145 (backward-paragraph) | |
| 146 (center-region (point) end)))) | |
| 147 | |
| 148 (defun center-region (from to) | |
| 149 "Center each nonblank line starting in the region. | |
| 150 See `center-line' for more info." | |
| 151 (interactive "r") | |
| 152 (if (> from to) | |
| 153 (let ((tem to)) | |
| 154 (setq to from from tem))) | |
| 155 (save-excursion | |
| 156 (save-restriction | |
| 157 (narrow-to-region from to) | |
| 158 (goto-char from) | |
| 159 (while (not (eobp)) | |
| 160 (or (save-excursion (skip-chars-forward " \t") (eolp)) | |
| 161 (center-line)) | |
| 162 (forward-line 1))))) | |
| 163 | |
| 164 (defun center-line (&optional nlines) | |
| 165 "Center the line point is on, within the width specified by `fill-column'. | |
| 166 This means adjusting the indentation so that it equals | |
| 167 the distance between the end of the text and `fill-column'. | |
| 168 The argument NLINES says how many lines to center." | |
| 169 (interactive "P") | |
| 170 (if nlines (setq nlines (prefix-numeric-value nlines))) | |
| 171 (while (not (eq nlines 0)) | |
| 172 (save-excursion | |
| 173 (let ((lm (current-left-margin)) | |
| 174 line-length) | |
| 175 (beginning-of-line) | |
| 176 (delete-horizontal-space) | |
| 177 (end-of-line) | |
| 178 (delete-horizontal-space) | |
| 179 (setq line-length (current-column)) | |
| 180 (if (> (- fill-column lm line-length) 0) | |
| 181 (indent-line-to | |
| 182 (+ lm (/ (- fill-column lm line-length) 2)))))) | |
| 183 (cond ((null nlines) | |
| 184 (setq nlines 0)) | |
| 185 ((> nlines 0) | |
| 186 (setq nlines (1- nlines)) | |
| 187 (forward-line 1)) | |
| 188 ((< nlines 0) | |
| 189 (setq nlines (1+ nlines)) | |
| 190 (forward-line -1))))) | |
| 191 | |
| 192 ;;; text-mode.el ends here |