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* doc/emacs/buffers.texi (Indirect Buffers): Mention modification hook quirk

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Stefan Monnier 2022-06-29 13:41:59 -04:00
parent f1de6c0e28
commit 6f22631a63
1 changed files with 11 additions and 2 deletions
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doc/emacs/buffers.texi
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@ -616,10 +616,11 @@ select it in another window (@code{clone-indirect-buffer-other-window}).
The text of the indirect buffer is always identical to the text of its
base buffer; changes made by editing either one are visible immediately
in the other. But in all other respects, the indirect buffer and its
in the other. ``Text'' here includes both the characters and their text
properties. But in all other respects, the indirect buffer and its
base buffer are completely separate. They can have different names,
different values of point, different narrowing, different markers,
different major modes, and different local variables.
different overlays, different major modes, and different local variables.
An indirect buffer cannot visit a file, but its base buffer can. If
you try to save the indirect buffer, that actually works by saving the
@ -645,6 +646,14 @@ buffer in another window. These functions run the hook
named @var{indirect-name} from a buffer @var{base-buffer}, prompting for
both using the minibuffer.
Note: When a modification is made to the text of a buffer, the
modification hooks are run only in the base buffer, because most of
the functions on those hooks are not prepared to work correctly in
indirect buffers. So if you need a modification hook function in an
indirect buffer, you need to manually add that function to the hook
@emph{in the base buffer} and then make the function operate in the
desired indirect buffer.
@node Buffer Convenience
@section Convenience Features and Customization of Buffer Handling