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(Examining Properties): Add get-char-property-and-overlay.

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Change arg name in get-char-property.
(Special Properties): Update handling of keymap property.
This commit is contained in:
Richard M. Stallman 2003-12-29 21:51:29 +00:00
parent 81e65dff20
commit 6fac48b39c
1 changed files with 24 additions and 7 deletions
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31
lispref/text.texi
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@ -1890,7 +1890,8 @@ begins. @xref{Usual Display}.
Column number computations ignore the width of the window and the
amount of horizontal scrolling. Consequently, a column value can be
arbitrarily high. The first (or leftmost) column is numbered 0.
arbitrarily high. The first (or leftmost) column is numbered 0. They
also ignore overlays and text properties, aside from invisibility.
@defun current-column
This function returns the horizontal position of point, measured in
@ -2409,7 +2410,7 @@ has a category that is a symbol, then @code{get-text-property} returns
the @var{prop} property of that symbol.
@end defun
@defun get-char-property pos prop &optional object
@defun get-char-property position prop &optional object
This function is like @code{get-text-property}, except that it checks
overlays first and then text properties. @xref{Overlays}.
@ -2422,6 +2423,20 @@ string, only text properties are considered, since strings never have
overlays.
@end defun
@defun get-char-property-and-overlay position prop &optional object
This is like @code{get-char-property}, but gives extra information
about the overlay that the property value comes from.
Its value is a cons cell whose @sc{car} is the property value, the
same value @code{get-char-property} would return with the same
arguments. Its @sc{cdr} is the overlay in which the property was
found, or @code{nil}, if it was found as a text property or not found
at all.
If @var{position} is at the end of @var{object}, both the @sc{car} and
the @sc{cdr} of the value are @code{nil}.
@end defun
@defvar char-property-alias-alist
This variable holds an alist which maps property names to a list of
alternative property names. If a character does not specify a direct
@ -2860,11 +2875,13 @@ The @code{keymap} property specifies an additional keymap for
commands. The property's value for the character before point applies
if it is non-@code{nil} and rear-sticky, and the property's value for
the character after point applies if it is non-@code{nil} and
front-sticky. When the value applies, it is used for key lookup
before the buffer's local map. (For mouse clicks, the position of the
click is used instead of the position of point.) If the property
value is a symbol, the symbol's function definition is used as the
keymap. @xref{Active Keymaps}.
front-sticky. (For mouse clicks, the position of the click is used
instead of the position of point.) If the property value is a symbol,
the symbol's function definition is used as the keymap.
When this keymap applies, it is used for key lookup before the minor
mode keymaps and before the buffer's local map. @xref{Active
Keymaps}.
@item local-map
@kindex local-map @r{(text property)}