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doc/lispref/text.texi: Add complement to commit f4a1c00656

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* doc/lispref/text.texi (Examining Properties): Mention the change in
cursor-sensor-functions.
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Stefan Monnier 2026-05-18 18:47:47 -04:00
parent 9436d92c5d
commit 8095fbef77
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5
doc/lispref/text.texi
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@ -3042,6 +3042,7 @@ followed by the text properties. If @var{object} is a string, only
text properties are considered, since strings never have overlays.
@end defun
@anchor{Boundaries of text and overlay properties}
@defun get-pos-property position prop &optional object
This function is like @code{get-char-property}, except that it pays
attention to properties' stickiness and overlays' advancement settings
@ -4019,6 +4020,10 @@ The movement can be @code{entered} or @code{left}, depending on whether
the cursor is entering the text that has this property or leaving it, or
@code{moved} when the cursor moved within that text.
Other values for the direction should be ignored.
Whether the boundary positions (at the beginning and end of an overlay or
a stretch of text-property) are considered as inside or outside follows
the same rules as for @code{get-pos-property}, see @pxref{Boundaries of
text and overlay properties}.
The functions are called only when the minor mode
@code{cursor-sensor-mode} is turned on.

15
etc/NEWS
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@ -3987,6 +3987,21 @@ all versions, sleep events require Windows 8 or later).
* Incompatible Lisp Changes in Emacs 31.1
+++
** Boundaries of 'cursor-sensor-functions' now obey stickiness.
'cursor-sensor-mode' now uses 'get-pos-property' to decide whether a
boundary is considered as inside or outside.
This means that by default, the boundaries have changed: the end
position of a stretch of a 'cursor-sensor-functions' text property
used to be considered outside of the stretch whereas it is now
considered as inside. You can recover the previous behavior by
controlling the stickiness, for example with a call like:
(add-text-properties BEG END
'(cursor-sensor-functions (MY-FUNCTION)
rear-nonsticky (cursor-sensor-functions)))
+++
** 'makunbound' on a variable alias undoes the alias.
Previously, it had the effect of applying the 'makunbound' on the