international/characters.el (glyphless-char-display-control):
Make it a defcustom, with update-glyphless-char-display as its
:set attribute.
(top level): Don't call update-glyphless-char-display.
src/xdisp.c (set_cursor_from_row): Fix cursor positioning on
zero-width characters.
(syms_of_xdisp) <glyphless-char-display>: Doc fix.
src/.gdbinit (pgx): Adapt to latest changes in `struct glyph'.
src/w32term.c (x_draw_glyphless_glyph_string_foreground): Draw the
box before drawing the glyphs inside it.
src/dispextern.h (enum glyphless_display_method): Rename
GLYPHLESS_DISPLAY_HEXA_CODE to GLYPHLESS_DISPLAY_HEX_CODE. All
users changed.
src/term.c (append_glyphless_glyph, produce_glyphless_glyph): Fix
comments.
(produce_glyphless_glyph): Enclose "U+nnnn" and "empty box"
whitespace in "[]", to simulate a box. Don't use uninitialized
variable `width'.
lisp/international/characters.el (glyphless-char-display-control):
Renamed from glyphless-char-control; all users changed. Doc fix.
Signal an error if display method is not one of the recognized
symbols.
doc/emacs/rmail.texi (Rmail Coding): Characters with no fonts are not
necessarily displayed as empty boxes.
doc/emacs/mule.texi (Language Environments, Fontsets): Characters with no
fonts are not necessarily displayed as empty boxes.
doc/emacs/display.texi (Text Display): Document display of glyphless
characters.
doc/lispref/display.texi (Usual Display): Characters with no fonts are not
necessarily displayed as empty boxes.
etc/NEWS: Document display of glyphless characters.
(cjk-char-width-table-list): New variable.
(use-cjk-char-width-table): New arg local-name.
(use-default-char-width-table): Fix for the case that Emacs is
already using the default char-width-table.
find-word-boundary-function-table.
(next-word-boundary-han, next-word-boundary-kana): Delete them.
(word-combining-categories, word-separating-categories): Adjusted
to the change of the docstrings.
