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Add NEWS entries for recent autosaved buffer modification status

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* doc/lispref/buffers.texi (Buffer Modification): Note 'autosaved'
value.
This commit is contained in:
Lars Ingebrigtsen 2022-05-10 03:46:34 +02:00
parent 0bee4cda88
commit 54ab2b3674
2 changed files with 19 additions and 5 deletions
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4
doc/lispref/buffers.texi
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@ -566,7 +566,9 @@ function @code{force-mode-line-update} works by doing this:
@defun restore-buffer-modified-p flag
Like @code{set-buffer-modified-p}, but does not force redisplay
of mode lines.
of mode lines. This function also allows a @var{flag} value of
@code{autosaved}, which marks the buffer as having been autosaved
after the last modification.
@end defun
@deffn Command not-modified &optional arg

20
etc/NEWS
View file

@ -1564,14 +1564,21 @@ Emacs buffers, like indentation and the like. The new ert function
* Incompatible Lisp Changes in Emacs 29.1
+++
** 'buffer-modified-p' has been extended.
This function was previously documented to return only nil or t. This
has been changed to nil/'autosaved'/non-nil. The new 'autosaved'
value means that the buffer is modified, but that it hasn't been
modified after the last auto-save.
---
** 'with-silent-modifications' also restores buffer modification ticks.
** 'with-silent-modifications' also restores buffer autosave status.
'with-silent-modifications' is a macro meant to be used by the font
locking machinery to allow applying text properties without changing
the modification status of the buffer. However, it didn't restore the
buffer modification ticks, so applying font locking to a modified
buffer that had already been auto-saved would trigger another
auto-saving. This is no longer the case.
buffer autosave status, so applying font locking to a modified buffer
that had already been auto-saved would trigger another auto-saving.
This is no longer the case.
---
** 'prin1' doesn't always escape "." and "?" in symbols any more.
@ -1709,6 +1716,11 @@ functions.
* Lisp Changes in Emacs 29.1
+++
*** 'restore-buffer-modified-p' can now alter buffer auto-save state.
With a FLAG value of 'autosaved', it will mark the buffer as having
been auto-saved after the last modification.
---
*** New minor mode 'isearch-fold-quotes-mode'.
This sets up 'search-default-mode' so that quote characters are