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Minor improvements of next-error docs

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* lisp/simple.el (next-error-find-buffer-function)
(previous-error, next-error-select-buffer): Doc fixes.
* doc/emacs/maintaining.texi (Change Log Commands):
* doc/emacs/building.texi (Compilation Mode): Index the new
commands and variables.  Improve wording.
(Bug#20493)
This commit is contained in:
Eli Zaretskii 2018-04-22 20:39:46 +03:00
parent d7faaef501
commit 415e8593ed
3 changed files with 23 additions and 11 deletions
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5
doc/emacs/building.texi
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@ -190,6 +190,9 @@ compilation buffer produce automatic source display.
@item g
Re-run the last command whose output is shown in the
@file{*compilation*} buffer.
@item M-x next-error-select-buffer
Select a buffer to be used by next invocation of @code{next-error} and
@code{previous-error}.
@end table
@kindex M-g M-n
@ -212,6 +215,8 @@ the beginning of the compilation buffer, and visits the first locus.
@kbd{M-g M-p} or @kbd{M-g p} (@code{previous-error}) iterates
through errors in the opposite direction.
@vindex next-error-find-buffer-function
@findex next-error-select-buffer
The @code{next-error} and @code{previous-error} commands don't just
act on the errors or matches listed in @file{*compilation*} and
@file{*grep*} buffers; they also know how to iterate through error or

11
doc/emacs/maintaining.texi
View file

@ -1640,14 +1640,15 @@ entry is considered a page. This facilitates editing the entries.
@kbd{C-j} and auto-fill indent each new line like the previous line;
this is convenient for entering the contents of an entry.
You can use the @code{change-log-goto-source} command (by default
@findex change-log-goto-source
You can use the command @code{change-log-goto-source} (by default
bound to @kbd{C-c C-c}) to go to the source location of the change log
entry near point, when Change Log mode is on. Then subsequent
invocations of the @code{next-error} command (by default bound to
@kbd{M-g M-n}) will move between entries in the change log. You will
jump to the actual site in the file that was changed, not just to the
next change log entry. You can also use @code{previous-error} to move
back in the same list.
@kbd{M-g M-n} and @kbd{C-x `}) will move between entries in the change
log. You will jump to the actual site in the file that was changed,
not just to the next change log entry. You can also use
@code{previous-error} to move back through the change log entries.
@findex change-log-merge
You can use the command @kbd{M-x change-log-merge} to merge other

18
lisp/simple.el
View file

@ -180,8 +180,12 @@ rejected, and the function returns nil."
(defcustom next-error-find-buffer-function #'ignore
"Function called to find a `next-error' capable buffer.
This functions takes the same three arguments as the function
`next-error-find-buffer', and returns the buffer to be used
by the subsequent invocation of the command `next-error'."
`next-error-find-buffer', and should return the buffer to be
used by the subsequent invocation of the command `next-error'
and `previous-error'.
If the function returns nil, `next-error-find-buffer' will
try to use the buffer it used previously, and failing that
all other buffers."
:type '(choice (const :tag "No default" ignore)
(const :tag "Single next-error capable buffer on selected frame"
next-error-buffer-on-selected-frame)
@ -340,9 +344,9 @@ and TO-BUFFER is a target buffer."
(defun next-error-select-buffer (buffer)
"Select a `next-error' capable BUFFER and set it as the last used.
This means that the selected buffer becomes the source of locations
for the subsequent invocation of `next-error'. Interactively, this command
allows selection only among buffers where `next-error-function' is bound to
an appropriate function."
for the subsequent invocation of `next-error' or `previous-error'.
Interactively, this command allows selection only among buffers
where `next-error-function' is bound to an appropriate function."
(interactive
(list (get-buffer
(read-buffer "Select next-error buffer: " nil nil
@ -358,7 +362,9 @@ an appropriate function."
Prefix arg N says how many error messages to move backwards (or
forwards, if negative).
This operates on the output from the \\[compile] and \\[grep] commands."
This operates on the output from the \\[compile] and \\[grep] commands.
See `next-error' for the details."
(interactive "p")
(next-error (- (or n 1))))