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A display table is actually a char-table (voir la section Char-Tables) with
display-table
as its subtype.
This creates and returns a display table. The table initially has
nil
in all elements.
The ordinary elements of the display table are indexed by character codes;
the element at index c says how to display the character code
c. The value should be nil
or a vector of the glyphs to be
output (voir la section Glyphs). nil
says to display the character c
according to the usual display conventions (voir la section Usual Display Conventions).
Warning: if you use the display table to change the display of newline characters, the whole buffer will be displayed as one long “line.”
The display table also has six “extra slots” which serve special
purposes. Here is a table of their meanings; nil
in any slot means
to use the default for that slot, as stated below.
The glyph for the end of a truncated screen line (the default for this is ‘$’). Voir la section Glyphs. On graphical terminals, Emacs uses arrows in the fringes to indicate truncation, so the display table has no effect.
The glyph for the end of a continued line (the default is ‘\’). On graphical terminals, Emacs uses curved arrows in the fringes to indicate continuation, so the display table has no effect.
The glyph for indicating a character displayed as an octal character code (the default is ‘\’).
The glyph for indicating a control character (the default is ‘^’).
A vector of glyphs for indicating the presence of invisible lines (the default is ‘...’). Voir la section Selective Display.
The glyph used to draw the border between side-by-side windows (the default is ‘|’). Voir la section Splitting Windows. This takes effect only when there are no scroll bars; if scroll bars are supported and in use, a scroll bar separates the two windows.
For example, here is how to construct a display table that mimics the effect
of setting ctl-arrow
to a non-nil
value:
(setq disptab (make-display-table)) (let ((i 0)) (while (< i 32) (or (= i ?\t) (= i ?\n) (aset disptab i (vector ?^ (+ i 64)))) (setq i (1+ i))) (aset disptab 127 (vector ?^ ??))) |
This function returns the value of the extra slot slot of
display-table. The argument slot may be a number from 0 to 5
inclusive, or a slot name (symbol). Valid symbols are truncation
,
wrap
, escape
, control
, selective-display
, and
vertical-border
.
This function stores value in the extra slot slot of
display-table. The argument slot may be a number from 0 to 5
inclusive, or a slot name (symbol). Valid symbols are truncation
,
wrap
, escape
, control
, selective-display
, and
vertical-border
.
This function displays a description of the display table display-table in a help buffer.
This command displays a description of the current display table in a help buffer.
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Ce document a été généré par Eric Reinbold le 13 Octobre 2007 en utilisant texi2html 1.78.