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Improve documentation of dabbrevs

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* lisp/dabbrev.el (dabbrev-expand): Doc fix.  (Bug#24890)

* doc/emacs/abbrevs.texi (Dynamic Abbrevs): Mention
'dabbrev-check-all-buffers', 'dabbrev-check-other-buffers', and
'dabbrev-ignored-buffer-names' and their purpose.  (Bug#24890)
This commit is contained in:
Eli Zaretskii 2016-11-07 19:34:51 +02:00
parent 7272e5db22
commit 4f478ca04b
2 changed files with 15 additions and 7 deletions
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17
doc/emacs/abbrevs.texi
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@ -341,7 +341,7 @@ abbrev expansion happens only when you request it explicitly.
@table @kbd
@item M-/
Expand the word in the buffer before point as a @dfn{dynamic abbrev},
by searching in the buffer for words starting with that abbreviation
by searching for words starting with that abbreviation
(@code{dabbrev-expand}).
@item C-M-/
@ -361,14 +361,19 @@ The variable @code{dabbrev-limit}, if non-@code{nil}, specifies how far
away in the buffer to search for an expansion.
@vindex dabbrev-check-all-buffers
@vindex dabbrev-check-other-buffers
After scanning the current buffer, @kbd{M-/} normally searches other
buffers, unless you have set @code{dabbrev-check-all-buffers} to
@code{nil}.
buffers. The variables @code{dabbrev-check-all-buffers} and
@code{dabbrev-check-other-buffers} can be used to determine which
other buffers, if any, are searched.
@vindex dabbrev-ignored-buffer-names
@vindex dabbrev-ignored-buffer-regexps
For finer control over which buffers to scan, customize the variable
@code{dabbrev-ignored-buffer-regexps}. Its value is a list of regular
expressions. If a buffer's name matches any of these regular
For finer control over which buffers to scan, customize the
variables @code{dabbrev-ignored-buffer-names} and
@code{dabbrev-ignored-buffer-regexps}. The value of the former is a
list of buffer names to skip. The value of the latter is a list of
regular expressions; if a buffer's name matches any of these regular
expressions, dynamic abbrev expansion skips that buffer.
A negative argument to @kbd{M-/}, as in @kbd{C-u - M-/}, says to

5
lisp/dabbrev.el
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@ -433,7 +433,10 @@ Expands to the most recent, preceding word for which this is a prefix.
If no suitable preceding word is found, words following point are
considered. If still no suitable word is found, then look in the
buffers accepted by the function pointed out by variable
`dabbrev-friend-buffer-function'.
`dabbrev-friend-buffer-function', if `dabbrev-check-other-buffers'
says so. Then, if `dabbrev-check-all-buffers' is non-nil, look in
all the other buffers, subject to constraints specified
by `dabbrev-ignored-buffer-names' and `dabbrev-ignored-regexps'.
A positive prefix argument, N, says to take the Nth backward *distinct*
possibility. A negative argument says search forward.