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with-silent-modifications doc clarification

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* lisp/subr.el (with-silent-modifications): Rearrange the doc
string a bit so that the most pertinent information is at the
top (bug#21171).

(cherry picked from commit e0e70f030e)
This commit is contained in:
Lars Ingebrigtsen 2016-04-30 23:34:29 +02:00
parent 3bc26a7080
commit 9722ae18c3
1 changed files with 3 additions and 4 deletions
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lisp/subr.el
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@ -3291,6 +3291,8 @@ See also `with-temp-file' and `with-output-to-string'."
(defmacro with-silent-modifications (&rest body)
"Execute BODY, pretending it does not modify the buffer.
This macro is Typically used around modifications of
text-properties which do not really affect the buffer's content.
If BODY performs real modifications to the buffer's text, other
than cosmetic ones, undo data may become corrupted.
@ -3298,10 +3300,7 @@ This macro will run BODY normally, but doesn't count its buffer
modifications as being buffer modifications. This affects things
like `buffer-modified-p', checking whether the file is locked by
someone else, running buffer modification hooks, and other things
of that nature.
Typically used around modifications of text-properties which do
not really affect the buffer's content."
of that nature."
(declare (debug t) (indent 0))
(let ((modified (make-symbol "modified")))
`(let* ((,modified (buffer-modified-p))