Basically, this makes the structure of buffer-local values and object
forwarding explicit in the type of Lisp_Symbols rather than use
special Lisp_Objects for that. This tends to lead to slightly more
verbose code, but is more C-like, simpler, and makes it easier to make
sure we handled all cases, among other things by letting the compiler
help us check it.
* lisp.h (enum Lisp_Misc_Type, union Lisp_Misc):
Removing forwarding objects.
(enum Lisp_Fwd_Type, enum symbol_redirect, union Lisp_Fwd): New types.
(struct Lisp_Symbol): Make the various forms of variable-forwarding
explicit rather than hiding them inside Lisp_Object "values".
(XFWDTYPE): New macro.
(XINTFWD, XBOOLFWD, XOBJFWD, XKBOARD_OBJFWD): Redefine.
(XBUFFER_LOCAL_VALUE): Remove.
(SYMBOL_VAL, SYMBOL_ALIAS, SYMBOL_BLV, SYMBOL_FWD, SET_SYMBOL_VAL)
(SET_SYMBOL_ALIAS, SET_SYMBOL_BLV, SET_SYMBOL_FWD): New macros.
(SYMBOL_VALUE, SET_SYMBOL_VALUE): Remove.
(struct Lisp_Intfwd, struct Lisp_Boolfwd, struct Lisp_Objfwd)
(struct Lisp_Buffer_Objfwd, struct Lisp_Kboard_Objfwd):
Remove the Lisp_Misc_* header.
(struct Lisp_Buffer_Local_Value): Redefine.
(BLV_FOUND, SET_BLV_FOUND, BLV_VALUE, SET_BLV_VALUE): New macros.
(struct Lisp_Misc_Any): Add filler to get the right size.
(struct Lisp_Free): Use struct Lisp_Misc_Any rather than struct
Lisp_Intfwd.
(DEFVAR_LISP, DEFVAR_LISP_NOPRO, DEFVAR_BOOL, DEFVAR_INT)
(DEFVAR_KBOARD): Allocate a forwarding object.
* data.c (do_blv_forwarding, store_blv_forwarding): New macros.
(let_shadows_global_binding_p): New function.
(union Lisp_Val_Fwd): New type.
(make_blv): New function.
(swap_in_symval_forwarding, indirect_variable, do_symval_forwarding)
(store_symval_forwarding, swap_in_global_binding, Fboundp)
(swap_in_symval_forwarding, find_symbol_value, Fset)
(let_shadows_buffer_binding_p, set_internal, default_value)
(Fset_default, Fmake_variable_buffer_local, Fmake_local_variable)
(Fkill_local_variable, Fmake_variable_frame_local)
(Flocal_variable_p, Flocal_variable_if_set_p)
(Fvariable_binding_locus):
* xdisp.c (select_frame_for_redisplay):
* lread.c (Fintern, Funintern, init_obarray, defvar_int)
(defvar_bool, defvar_lisp_nopro, defvar_lisp, defvar_kboard):
* frame.c (store_frame_param):
* eval.c (Fdefvaralias, Fuser_variable_p, specbind, unbind_to):
* bytecode.c (Fbyte_code) <varref, varset>: Adapt to the new symbol
value structure.
* buffer.c (PER_BUFFER_SYMBOL): Move from buffer.h.
(clone_per_buffer_values): Only adjust markers into the current buffer.
(reset_buffer_local_variables): PER_BUFFER_IDX is never -2.
(Fbuffer_local_value, set_buffer_internal_1)
(swap_out_buffer_local_variables):
Adapt to the new symbol value structure.
(DEFVAR_PER_BUFFER): Allocate a Lisp_Buffer_Objfwd object.
(defvar_per_buffer): Take a new arg for the fwd object.
(buffer_lisp_local_variables): Return a proper alist (different fix
for bug#4138).
* alloc.c (Fmake_symbol): Use SET_SYMBOL_VAL.
(Fgarbage_collect): Don't handle buffer_defaults specially.
(mark_object): Handle new symbol value structure rather than the old
special Lisp_Misc_* objects.
(gc_sweep) <symbols>: Free also the buffer-local-value objects.
* term.c (set_tty_color_mode):
* bidi.c (bidi_initialize): Don't access the ->value field directly.
* buffer.h (PER_BUFFER_VAR_OFFSET): Don't bother with
a buffer_local_flags.
* print.c (print_object): Get rid of impossible forwarding objects.
(read-buffer-file-coding-system): New function.
(set-buffer-file-coding-system): Use it. Prompt the user if the
coding-system cannot encode all the chars.
bidi.c (bidi_get_type, bidi_get_category)
(bidi_at_paragraph_end, bidi_resolve_weak, bidi_resolve_neutral)
(bidi_type_of_next_char, bidi_level_of_next_char): Declare
static. Use `INLINE' rather than `inline'.
(tmm-prompt): Remove obsolete call to x-popup-menu.
(tmm-get-keymap): Add key-binding shortcuts now that they're not
available in the "keyseq cache" any more.
* view.el (view-file, view-buffer): Move test for special mode-class
from view-file to view-buffer.
* tar-mode.el (tar-extract): Turn if's into one cond
like in arc-mode.el.
* arc-mode.el (archive-zip-extract): Try to find 7z executable.
(archive-7z-extract): New defcustom.
(archive-find-type): Add magic string for 7z.
(archive-extract-by-stdout): Add new optional arg `stderr-file'.
If `stderr-file' is non-nil, use `(t stderr-file)' for the
`buffer' arg of `call-process'.
(archive-zip-extract): Check `archive-zip-extract' for "7z" and
call the function `archive-7z-extract' with the variable
`archive-7z-extract' let-bound to `archive-zip-extract'.
(archive-7z-summarize, archive-7z-extract): New functions.
* international/mule.el (auto-coding-alist):
* files.el (auto-mode-alist): Add 7z file extension.
* emacs-lisp/autoload.el (autoload-file-load-name): Be more clever.
Should make most file-local generated-autoload-file unnecessary.
(print-readably): Silence warnings.
(autoload-find-destination): Take load-name as an arg to make sure
it's the same as the one that will be in the file.
(autoload-generate-file-autoloads): Adjust to above changes.
Try to make the dataflow a bit simpler.
* xlwmenu.c: Include Shell.h, remove duplicate declaration of
XlwMenuRedisplay.
(display_menu_item): Replace ws->window with ws->pixmap, remove
call to XftDrawRect.
(display_menu): Remove this and that argument. Remove
just_compute_this_one_p. Fill pixmap at start and copy it to window
at end.
(expose_cb): New function.
(make_windows_if_needed): Replace XCreateWindow with XtCreatePopup.
Add eventhandler for expose to expose_cb. Remove creation of
xft_draw.
(create_pixmap_for_menu): New function.
(remap_menubar): Pop down menus that aren't the same as in old_stack.
Set width, heigh, x, y on widget with XtVaSetValues. Call
create_pixmap_for_menu.
Replace XUnmapWindow with XtPopdown.
Remowe two last parameters to display_menu.
(map_event_to_widget_value, XlwMenuRedisplay, Key, Select)
(pop_up_menu): Remowe two last parameters to display_menu.
(XlwMenuRealize): Call create_pixmap_for_menu, set w and pixmap.
Remove call to XftDrawCreate.
(XlwMenuDestroy): Free pixmap. Call XtDestroyWidget instead of
XDestroyWindow.
(handle_motion_event): Only call handle_single_motion_event once.
* xlwmenuP.h (window_state): Add pixmap and w.
xdisp.c (extend_face_to_end_of_line): Fix face extension at ZV.
term.c (produce_special_glyphs): Mirror the backslash
continuation character in R2L lines.
xdisp.c (set_cursor_from_row, display_line): Use
MATRIX_ROW_CONTINUATION_LINE_P instead of testing value of
row->continuation_lines_width.
fringe.c (update_window_fringes): For R2L rows, swap the bitmaps
of continuation indicators on the fringes.
xdisp.c (next_element_from_buffer): Don't call
bidi_paragraph_init if we are at ZV. Fixes a crash when reseated to
ZV by try_window_reusing_current_matrix.
(display_and_set_cursor, erase_phys_cursor): Handle negative HPOS,
which happens with R2L glyph rows. Fixes a crash when inserting a
character at end of an R2L line.
xdisp.c (set_cursor_from_row): Don't be fooled by truncated
rows: don't treat them as having zero-width characters. Improve
comments.
(extend_face_to_end_of_line): Use window_box_width to compute the
width of the stretch glyph, to account for margins. If this is
the last glyph row, use DEFAULT_FACE_ID, to avoid painting the
rest of the window with the region face.
xdisp.c (set_cursor_from_row): Don't consider possibility of
other rows with cursor unless they are different from this row and
this row is part of a continued line.
