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Revert "Allow nil value for filter-buffer-substring-function"

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This reverts commit a7c65fc666.
This commit is contained in:
Stefan Kangas 2022-09-20 09:28:46 +02:00
parent 1b77f1981d
commit 9035c20888
1 changed files with 2 additions and 7 deletions
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9
lisp/simple.el
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@ -5363,10 +5363,7 @@ These commands include \\[set-mark-command] and \\[start-kbd-macro]."
The function is called with the same 3 arguments (BEG END DELETE)
that `filter-buffer-substring' received. It should return the
buffer substring between BEG and END, after filtering. If DELETE is
non-nil, it should delete the text between BEG and END from the buffer.
The default value is `buffer-substring--filter', and nil means
the same as the default.")
non-nil, it should delete the text between BEG and END from the buffer.")
(defun filter-buffer-substring (beg end &optional delete)
"Return the buffer substring between BEG and END, after filtering.
@ -5382,9 +5379,7 @@ Use `filter-buffer-substring' instead of `buffer-substring',
you want to allow filtering to take place. For example, major or minor
modes can use `filter-buffer-substring-function' to exclude text properties
that are special to a buffer, and should not be copied into other buffers."
(funcall (or filter-buffer-substring-function
#'buffer-substring--filter)
beg end delete))
(funcall filter-buffer-substring-function beg end delete))
(defun buffer-substring--filter (beg end &optional delete)
"Default function to use for `filter-buffer-substring-function'.