bug#36767: 26.1; request: add more quick keys to the *Help* buffer

[Juri Linkov]

>> it would be possible to type just 'C-h v RET c' to customize it.
>
> You forget the need to switch to the *Help* buffer before typing 'c',
> don't you?

I have no such problems because of using windmove-display-*
commands where the prefix arg defines whether to select
the displayed window or not.

Maybe describe-* commands could accept the same prefix arg
where C-u will reverse the value of help-window-select
the same way as C-u of windmove-display-* reverses the value
of windmove-display-no-select.

> And that need to go to *Help* is, for me, the single significant
> annoyance with Help commands.  For example, I frequently want to look
> at the source of a function whose doc string I just requested, and its
> a nuisance to have to click on the button there or go to the *Help*
> buffer, find the button, and press RET.
>
> So how about some special prefix key and a keymap to allow invoking
> these commands from a buffer other than *Help*?

To look at the source of a function, a quicker key is `M-.'
or `C-u M-.' that reads a symbol name.

>> diff --git a/lisp/help-mode.el b/lisp/help-mode.el
>> index 48cf435f97..24b7ffaa2a 100644
>> --- a/lisp/help-mode.el
>> +++ b/lisp/help-mode.el
>
> No changes in documentation to go with this?

Here is the documentation:

diff --git a/doc/emacs/help.texi b/doc/emacs/help.texi
index 8c24a926af..f144fd2922 100644
--- a/doc/emacs/help.texi
+++ b/doc/emacs/help.texi
@@ -456,6 +456,8 @@ Help Mode
 (@code{help-view-source}).
 @item i
 Look up the current topic in the manual(s) (@code{help-goto-info}).
+@item c
+Customize the variable or the face (@code{help-customize}).
 @end table
 
 @cindex hyperlink
diff --git a/etc/NEWS b/etc/NEWS
index da1372baf4..b1f1673fd3 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1133,6 +1133,10 @@ topic.
 *** New command 'help-goto-info' ('i')
 This command will look up the current symbol (if any) in Info.
 
++++
+*** New command 'help-customize' ('c').
+This command will customize the variable or the face (if any).
+
 ---
 *** The 'help-for-help' ('C-h C-h') screen has been redesigned.