* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
[not found] ` <<83wq6o370s.fsf@gnu.org>
@ 2014-11-21 15:38 ` Drew Adams
0 siblings, 0 replies; 13+ messages in thread
From: Drew Adams @ 2014-11-21 15:38 UTC (permalink / raw)
To: Eli Zaretskii, Drew Adams; +Cc: dieter, 19129
> > What you did, it sounds like (to me), is fix an additional bug: a
> > doc-string line that was too long.
>
> No line of the original doc string was too long. Please re-read the
> patch.
I said "it sounds like". Based on the description I was replying
to, it sounded like text was filled because some line was up to 80
columns wide.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
@ 2014-11-20 22:14 H. Dieter Wilhelm
2014-11-20 22:42 ` Drew Adams
2014-11-21 8:04 ` Eli Zaretskii
0 siblings, 2 replies; 13+ messages in thread
From: H. Dieter Wilhelm @ 2014-11-20 22:14 UTC (permalink / raw)
To: 19129
Hello,
in the documentation for recenter-positions was forgotten that it is
also used in move-to-window-line-top-bottom. I added below patch as an
illustration.
----------------------------------------------------------------------
Further wish:
I'm missing a separate positional defcustoms for each function -
recenter-top-bottom and move-to-window-line-top-bottom. Because in my
use cases M-r (move-to-window-line-top-bottom) is mostly applied to
pre-adjust the cursor position within the buffer before refining the
movement with an isearch-forward/backward so as to lessen statistically
the chances of multiple hits. So I'd like to suggest something similar
to
(setq move-to-window-line-positions '(.25 middle .75))
(I'm using M-0 M-r and M-- M-r in the borderline cases as well..)
C-l on the other hand I'm using mostly for inspecting further text
around the cursor context, so
(setq recenter-positions '(top middle bottom))
is more appropriate in most of my cases. (I don't want to suggest a
change of the current default of recenter-positions, just to clarify why
an additional positioning option might be worthwhile to implement)
Dieter
diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 510cd32..c559308 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2014-11-20 H. Dieter Wilhelm <dieter@duenenhof-wilhelm.de>
+
+ Documentation fix in recenter-positions
+ * window.el (recenter-positions): Added missing reference to
+ move-to-window-line-top-bottom
+
2014-11-20 Michael Albinus <michael.albinus@gmx.de>
Improve XEmacs compatibility.
diff --git a/lisp/window.el b/lisp/window.el
index 7d76649..a137fb6 100644
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -7370,17 +7370,24 @@ Return non-nil if the window was shrunk, nil otherwise."
Possible values: `top', `middle', `bottom', integer or float numbers.")
(defcustom recenter-positions '(middle top bottom)
- "Cycling order for `recenter-top-bottom'.
-A list of elements with possible values `top', `middle', `bottom',
-integer or float numbers that define the cycling order for
-the command `recenter-top-bottom'.
-
-Top and bottom destinations are `scroll-margin' lines from the true
-window top and bottom. Middle redraws the frame and centers point
-vertically within the window. Integer number moves current line to
-the specified absolute window-line. Float number between 0.0 and 1.0
-means the percentage of the screen space from the top. The default
-cycling order is middle -> top -> bottom."
+ "Cycling order for `recenter-top-bottom' and `move-to-window-line-top-bottom'.
+A list of elements with possible values `top', `middle',
+`bottom', integer or float numbers that define the cycling order
+for the command `recenter-top-bottom' and
+`move-to-window-line-top-bottom'.
+
+Top and bottom destinations are `scroll-margin' lines from the
+true window top and bottom. For `recenter-top-bottom' position
+`middle' redraws the frame and centers point vertically within
+the window. Integer number moves current line to the specified
+absolute window-line. In the case of
+`move-to-window-line-top-bottom' position `middle' moves the
+cursor point vertically to the center of the window. Integer
+number moves point to the specified absolute window-line.
+
+Float number between 0.0 and 1.0 means the percentage of the
+screen space from the top. The default cycling order is middle
+-> top -> bottom."
:type '(repeat (choice
(const :tag "Top" top)
(const :tag "Middle" middle)
In GNU Emacs 25.0.50.2 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.25)
of 2014-11-20 on vsl28t2g
Repository revision: f5d77aafa9d59c4afb13d744e67a0e4daf3be31a
Windowing system distributor `The X.Org Foundation', version 11.0.11601901
System Description: Debian GNU/Linux testing (jessie)
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
Important settings:
value of $LANG: en_GB.UTF-8
locale-coding-system: utf-8-unix
Major mode: Diff
Minor modes in effect:
vc-parent-buffer: *vc-dir*
whitespace-mode: t
diff-auto-refine-mode: t
show-paren-mode: t
electric-pair-mode: t
icomplete-mode: t
delete-selection-mode: t
display-battery-mode: t
display-time-mode: t
shell-dirtrack-mode: t
server-mode: t
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
buffer-read-only: t
column-number-mode: t
line-number-mode: t
Recent messages:
No changes between working revision and workfile
Finding changes in /usr/local/src/emacs/lisp/ChangeLog /usr/local/src/emacs/lisp/window.el...done
Type "q" in help window to restore its previous buffer, C-M-v to scroll help.
Mark set [2 times]
Saved text until " top)
(const :tag "Middle" middle)
"
Quit
Mark set
Making completion list...
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Memory information:
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--
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany
^ permalink raw reply related [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-20 22:14 H. Dieter Wilhelm
@ 2014-11-20 22:42 ` Drew Adams
2014-11-20 23:28 ` H. Dieter Wilhelm
2014-11-21 8:04 ` Eli Zaretskii
1 sibling, 1 reply; 13+ messages in thread
From: Drew Adams @ 2014-11-20 22:42 UTC (permalink / raw)
To: dieter, 19129
> in the documentation for recenter-positions was forgotten that it is
> also used in move-to-window-line-top-bottom. I added below patch as
> an illustration.
Actually no. The doc for a function should rarely, if ever, speak
about users (callers) of that function. It should simply say what
the function does, and perhaps what it can be used for if it is
intended for users.
But it should typically not try to list all of its callers, or even
the most important callers.
If this is no longer just a helper for `recenter-top-bottom'
then perhaps reference to even that function can be removed
from the `recenter-positions' doc.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-20 22:42 ` Drew Adams
@ 2014-11-20 23:28 ` H. Dieter Wilhelm
2014-11-21 8:08 ` Eli Zaretskii
0 siblings, 1 reply; 13+ messages in thread
From: H. Dieter Wilhelm @ 2014-11-20 23:28 UTC (permalink / raw)
To: 19129
Drew Adams <drew.adams@oracle.com> writes:
>> in the documentation for recenter-positions was forgotten that it is
>> also used in move-to-window-line-top-bottom. I added below patch as
>> an illustration.
>
> Actually no. The doc for a function should rarely, if ever, speak
> about users (callers) of that function. It should simply say what
> the function does, and perhaps what it can be used for if it is
> intended for users.
>
> But it should typically not try to list all of its callers, or even
> the most important callers.
>
> If this is no longer just a helper for `recenter-top-bottom'
> then perhaps reference to even that function can be removed
> from the `recenter-positions' doc.
I agree, my impulse went exactly into the opposite and wrong direction
:-/
Hope you'll remove the reference from recenter-positions and please
close the bug (or can I do this as well?)
Thanks for your explanations
Dieter
--
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-20 23:28 ` H. Dieter Wilhelm
@ 2014-11-21 8:08 ` Eli Zaretskii
2014-11-21 10:10 ` H. Dieter Wilhelm
0 siblings, 1 reply; 13+ messages in thread
From: Eli Zaretskii @ 2014-11-21 8:08 UTC (permalink / raw)
To: H. Dieter Wilhelm; +Cc: 19129
> From: dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm)
> Date: Fri, 21 Nov 2014 00:28:42 +0100
>
> please close the bug (or can I do this as well?)
Anyone can, by sending an email message to 19129-done@debbugs.gnu.org.
^^^^^
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-21 8:08 ` Eli Zaretskii
@ 2014-11-21 10:10 ` H. Dieter Wilhelm
2014-11-21 15:33 ` Eli Zaretskii
0 siblings, 1 reply; 13+ messages in thread
From: H. Dieter Wilhelm @ 2014-11-21 10:10 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 19129
Eli Zaretskii <eliz@gnu.org> writes:
>> From: dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm)
>> Date: Fri, 21 Nov 2014 00:28:42 +0100
>>
>> please close the bug (or can I do this as well?)
>
> Anyone can, by sending an email message to 19129-done@debbugs.gnu.org.
I see, thanks, I'll do that for #19129.
Please tell me briefly what are you thinking of introducing an extra
defcustom for move-to-window-line-top-bottom?
diff --git a/lisp/window.el b/lisp/window.el
index 91a0e15..8b9c7f5 100644
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -7475,6 +7475,27 @@ cycling order is middle -> top -> bottom."
:version "23.2"
:group 'windows)
+(defcustom move-to-window-line-positions '(middle top bottom)
+ "Cycling order for `move-to-window-line-top-bottom'.
+A list of elements with possible values `top', `middle', `bottom',
+integer or float numbers that define the cycling order for
+the command `move-to-window-line-top-bottom'.
+
+Top and bottom destinations are `scroll-margin' lines from the true
+window top and bottom. Middle redraws the frame and centers point
+vertically within the window. Integer number moves current line to
+the specified absolute window-line. Float number between 0.0 and 1.0
+means the percentage of the screen space from the top. The default
+cycling order is middle -> top -> bottom."
+ :type '(repeat (choice
+ (const :tag "Top" top)
+ (const :tag "Middle" middle)
+ (const :tag "Bottom" bottom)
+ (integer :tag "Line number")
+ (float :tag "Percentage")))
+ :version "25.1"
+ :group 'windows)
+
(defun recenter-top-bottom (&optional arg)
"Move current buffer line to the specified window line.
With no prefix argument, successive calls place point according
@@ -7515,16 +7536,16 @@ With a prefix argument ARG, acts like `move-to-window-line'.
With no argument, positions point at center of window.
Successive calls position point at positions defined
-by `recenter-positions'."
+by `move-to-window-line-positions'."
(interactive "P")
(cond
(arg (move-to-window-line arg)) ; Always respect ARG.
(t
(setq recenter-last-op
(if (eq this-command last-command)
- (car (or (cdr (member recenter-last-op recenter-positions))
- recenter-positions))
- (car recenter-positions)))
+ (car (or (cdr (member recenter-last-op move-to-window-line-positions))
+ move-to-window-line-positions))
+ (car move-to-window-line-positions)))
(let ((this-scroll-margin
(min (max 0 scroll-margin)
(truncate (/ (window-body-height) 4.0)))))
--
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany
^ permalink raw reply related [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-21 10:10 ` H. Dieter Wilhelm
@ 2014-11-21 15:33 ` Eli Zaretskii
0 siblings, 0 replies; 13+ messages in thread
From: Eli Zaretskii @ 2014-11-21 15:33 UTC (permalink / raw)
To: H. Dieter Wilhelm; +Cc: 19129
> From: dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm)
> Cc: 19129@debbugs.gnu.org
> Date: Fri, 21 Nov 2014 11:10:30 +0100
>
> Please tell me briefly what are you thinking of introducing an extra
> defcustom for move-to-window-line-top-bottom?
I have no opinion about this. But others might.
Thanks.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-20 22:14 H. Dieter Wilhelm
2014-11-20 22:42 ` Drew Adams
@ 2014-11-21 8:04 ` Eli Zaretskii
2014-11-21 8:52 ` H. Dieter Wilhelm
1 sibling, 1 reply; 13+ messages in thread
From: Eli Zaretskii @ 2014-11-21 8:04 UTC (permalink / raw)
To: H. Dieter Wilhelm; +Cc: 19129
> From: dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm)
> Date: Thu, 20 Nov 2014 23:14:38 +0100
>
> in the documentation for recenter-positions was forgotten that it is
> also used in move-to-window-line-top-bottom. I added below patch as an
> illustration.
Nitpicking: In the future, please try to avoid unnecessarily changing
parts that are unrelated to the proposed patch. This is especially
true for human-readable text (as opposed to code), because it makes it
very hard to determine where are you actually changing something.
In the case in point, I'm guessing you've filled the paragraphs of the
doc string, which wasn't really necessary, since the lines were of
reasonable length.
Thanks.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-21 8:04 ` Eli Zaretskii
@ 2014-11-21 8:52 ` H. Dieter Wilhelm
2014-11-21 15:14 ` Drew Adams
0 siblings, 1 reply; 13+ messages in thread
From: H. Dieter Wilhelm @ 2014-11-21 8:52 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 19129
Eli Zaretskii <eliz@gnu.org> writes:
>> From: dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm)
>> Date: Thu, 20 Nov 2014 23:14:38 +0100
>>
>> in the documentation for recenter-positions was forgotten that it is
>> also used in move-to-window-line-top-bottom. I added below patch as an
>> illustration.
>
> Nitpicking: In the future, please try to avoid unnecessarily changing
> parts that are unrelated to the proposed patch. This is especially
> true for human-readable text (as opposed to code), because it makes it
> very hard to determine where are you actually changing something.
I understand, I'll try to avoid it.
> In the case in point, I'm guessing you've filled the paragraphs of the
> doc string, which wasn't really necessary, since the lines were of
> reasonable length.
Yes, that's right, but I did it mistakenly because I thought it was
forgotten and that filling a paragraph would be necessary to be in
accordance to Elisp coding conventions.
Now I learned that even though emacs-lisp-docstring-fill-column is 65 an
80 column filling might be acceptable!
Thanks for the pointer.
Dieter
--
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-21 8:52 ` H. Dieter Wilhelm
@ 2014-11-21 15:14 ` Drew Adams
2014-11-21 15:30 ` Eli Zaretskii
` (2 more replies)
0 siblings, 3 replies; 13+ messages in thread
From: Drew Adams @ 2014-11-21 15:14 UTC (permalink / raw)
To: dieter, Eli Zaretskii; +Cc: 19129
> > In the case in point, I'm guessing you've filled the paragraphs of
> > the doc string, which wasn't really necessary, since the lines were
> > of reasonable length.
>
> Yes, that's right, but I did it mistakenly because I thought it was
> forgotten and that filling a paragraph would be necessary to be in
> accordance to Elisp coding conventions.
>
> Now I learned that even though emacs-lisp-docstring-fill-column is
> 65 an 80 column filling might be acceptable!
Uh, not really, IMHO. 80-column filling violates the spirit, if not
completely the letter, of the GNU Emacs coding conventions.
What you did, it sounds like (to me), is fix an additional bug: a
doc-string line that was too long. I would say thank you (while
still letting you know what Eli said about gratuitous changes).
But I don't speak for Emacs Dev.
From (elisp) `Documentation Tips':
* Format the documentation string so that it fits in an Emacs window
on an 80-column screen. It is a good idea for most lines to be
^^^^^^
no wider than 60 characters. The first line should not be wider
^^^^^^^^^^^^^^^^^^^^^^^^^^^
than 67 characters or it will look bad in the output of `apropos'.
You can fill the text if that looks good. Emacs Lisp mode fills
documentation strings to the width specified by
`emacs-lisp-docstring-fill-column'. However, you can sometimes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
make a documentation string much more readable by adjusting its
line breaks with care. Use blank lines between sections if the
documentation string is long.
The default value of `emacs-lisp-docstring-fill-column' is 65.
80 is the absolute maximum for a line. Anything longer than 60 is
to be avoided. Longer than 65 (`emacs-lisp-docstring-fill-column')
should be justified with good reasons, specific to the particular
case at hand.
The part about filling by default but possibly manually adjusting
line breaks to make things more readable should, IMO, explicitly
call out that what is meant is that you can introduce line breaks
at columns **less** than `emacs-lisp-docstring-fill-column'.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-21 15:14 ` Drew Adams
@ 2014-11-21 15:30 ` Eli Zaretskii
2014-11-21 17:05 ` H. Dieter Wilhelm
2014-11-21 21:37 ` H. Dieter Wilhelm
2 siblings, 0 replies; 13+ messages in thread
From: Eli Zaretskii @ 2014-11-21 15:30 UTC (permalink / raw)
To: Drew Adams; +Cc: dieter, 19129
> Date: Fri, 21 Nov 2014 07:14:15 -0800 (PST)
> From: Drew Adams <drew.adams@oracle.com>
> Cc: 19129@debbugs.gnu.org
>
> What you did, it sounds like (to me), is fix an additional bug: a
> doc-string line that was too long.
No line of the original doc string was too long. Please re-read the
patch.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-21 15:14 ` Drew Adams
2014-11-21 15:30 ` Eli Zaretskii
@ 2014-11-21 17:05 ` H. Dieter Wilhelm
2014-11-21 21:37 ` H. Dieter Wilhelm
2 siblings, 0 replies; 13+ messages in thread
From: H. Dieter Wilhelm @ 2014-11-21 17:05 UTC (permalink / raw)
To: Drew Adams; +Cc: 19129
Drew Adams <drew.adams@oracle.com> writes:
...
> What you did, it sounds like (to me), is fix an additional bug: a
> doc-string line that was too long. I would say thank you (while
> still letting you know what Eli said about gratuitous changes).
> But I don't speak for Emacs Dev.
...
> The part about filling by default but possibly manually adjusting
> line breaks to make things more readable should, IMO, explicitly
> call out that what is meant is that you can introduce line breaks
> at columns **less** than `emacs-lisp-docstring-fill-column'.
I see, I understand your point but also Elis'.
It makes sense to fill a new documentation and from this possibly
refining the text. (By the way, the documentation of fill-paragraph has
a line with of 79 chars, please see below ;-).) But also not to fill
unnecessarily *existing* documentation in patches for a better
readability (as long as there is no explicit directive for normalising
the documentation width for all existing doc strings).
Below is the last third of fill-paragraph's doc.:
⌜
If `fill-paragraph-function' is nil, return the `fill-prefix' used for filling.
The REGION argument is non-nil if called interactively; in that
case, if Transient Mark mode is enabled and the mark is active,
call `fill-region' to fill each of the paragraphs in the active
region, instead of just filling the current paragraph.
⌟
Thanks
Dieter
--
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom
2014-11-21 15:14 ` Drew Adams
2014-11-21 15:30 ` Eli Zaretskii
2014-11-21 17:05 ` H. Dieter Wilhelm
@ 2014-11-21 21:37 ` H. Dieter Wilhelm
2 siblings, 0 replies; 13+ messages in thread
From: H. Dieter Wilhelm @ 2014-11-21 21:37 UTC (permalink / raw)
To: 19129-done
--
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2014-11-21 21:37 UTC | newest]
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2014-11-21 15:38 ` bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom Drew Adams
2014-11-20 22:14 H. Dieter Wilhelm
2014-11-20 22:42 ` Drew Adams
2014-11-20 23:28 ` H. Dieter Wilhelm
2014-11-21 8:08 ` Eli Zaretskii
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