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Re: Minor enhancements to Emacs packages


From: Ziemowit Laski
Subject: Re: Minor enhancements to Emacs packages
Date: Thu, 22 Feb 2001 21:12:29 -0800

FEATURE REQUEST/IMPLEMENTATION

Ok, here are the context diffs for the changes I previously mentioned.  I have
perfunctorily tested these on Emacs 20.7 under RedHat Linux 7 and on Emacs 20.7
under Windows 2000.  Hopefully some of you Emacs/Lisp gurus out there (which I'm
definitely not) will take a look at these and decide if they're worth merging 
into
the main line.

mouse.el/menu-bar.el: I've added a defcustom variable that allows disabling
copy-yank-as-kill for text selected with the mouse (the user must cut/copy
explicitly, like on MacOS or Windows).

*** mouse.el.orig       Mon Feb 19 23:56:30 2001
--- mouse.el    Tue Feb 20 00:23:02 2001
***************
*** 37,42 ****
--- 37,50 ----
  ;;; Indent track-mouse like progn.
  (put 'track-mouse 'lisp-indent-function 0)

+ (defcustom mouse-select-implies-copy t
+   "*If non-nil, regions selected with the mouse are automatically copied
+ into the kill ring for subsequent operations (this is the default).  If
+ nil, the user must explicitly cut or copy the region, as is the norm on
+ Windows and MacOS boxes."
+   :type 'boolean
+   :group 'mouse)
+
  (defcustom mouse-yank-at-point nil
    "*If non-nil, mouse yank commands yank at point instead of at click."
    :type 'boolean
***************
*** 634,640 ****
                  (goto-char region-termination)
                  ;; Don't let copy-region-as-kill set deactivate-mark.
                  (let (deactivate-mark)
!                   (copy-region-as-kill (point) (mark t)))
                  (let ((buffer (current-buffer)))
                    (mouse-show-mark)
                    ;; mouse-show-mark can call read-event,
--- 642,648 ----
                  (goto-char region-termination)
                  ;; Don't let copy-region-as-kill set deactivate-mark.
                  (let (deactivate-mark)
!                   (if mouse-select-implies-copy (copy-region-as-kill (point)
(mark t))))
                  (let ((buffer (current-buffer)))
                    (mouse-show-mark)
                    ;; mouse-show-mark can call read-event,

*** menu-bar.el.orig    Tue Feb 20 00:28:28 2001
--- menu-bar.el Tue Feb 20 00:29:56 2001
***************
*** 281,287 ****

  (defun menu-bar-kill-ring-save (beg end)
    (interactive "r")
!   (if (mouse-region-match)
        (message "Selecting a region with the mouse does `copy' automatically")
      (kill-ring-save beg end)))

--- 281,287 ----

  (defun menu-bar-kill-ring-save (beg end)
    (interactive "r")
!   (if (and (mouse-region-match) mouse-select-implies-copy)
        (message "Selecting a region with the mouse does `copy' automatically")
      (kill-ring-save beg end)))


gud.el: I've added a defcustom variable that controls if, when a debugging
session is launched, the current directory is switched to that of the
executable being debugged; also, the command name for gdb (plus any
parameters) may now be specified in another defcustom var.

*** gud.el.orig Mon Feb 19 23:51:52 2001
--- gud.el      Sun Feb 18 21:28:32 2001
***************
*** 57,62 ****
--- 57,78 ----
    :type 'string
    :group 'gud)

+ (defcustom gud-gdb-command-name "gdb --quiet"
+   "This is the command used by the `gdb' command to start gdb from within
+ Emacs; it may include command-line options that should always be passed to
+ gdb."
+   :type 'string
+   :group 'gud)
+
+ (defcustom gud-switch-dir-upon-invocation t
+   "*Non-nil means that when a debugging session is started, the subprocess
+ should switch to the directory containing the executable named on the
+ command-line (if any) before starting the debugger itself.  This is the
+ traditional behavior of the `gdb', `xdb', `dbx', `sdb', `perldb', `pdb' and
+ `jdb' commands, but may be changed by setting this variable to nil."
+   :type 'boolean
+   :group 'gud)
+
  (global-set-key (concat gud-key-prefix "\C-l") 'gud-refresh)
  (define-key ctl-x-map " " 'gud-break) ;; backward compatibility hack

***************
*** 351,364 ****

  ;;;###autoload
  (defun gdb (command-line)
!   "Run gdb on program FILE in buffer *gud-FILE*.
! The directory containing FILE becomes the initial working directory
! and source-file directory for your debugger."
    (interactive
     (list (read-from-minibuffer "Run gdb (like this): "
                               (if (consp gud-gdb-history)
                                   (car gud-gdb-history)
!                                "gdb ")
                               gdb-minibuffer-local-map nil
                               '(gud-gdb-history . 1))))

--- 367,383 ----

  ;;;###autoload
  (defun gdb (command-line)
!   "Run gdb, as specified by `gud-gdb-command-name',  on program FILE in
! buffer *gud-FILE*.
! If the variable 'gud-switch-dir-upon-invocation' is non-nil (which is the
! default), the directory containing FILE becomes the initial working directory 
and

! source-file directory for your debugger; otherwise, the working directory is
! unchanged."
    (interactive
     (list (read-from-minibuffer "Run gdb (like this): "
                               (if (consp gud-gdb-history)
                                   (car gud-gdb-history)
!                                gud-gdb-command-name)
                               gdb-minibuffer-local-map nil
                               '(gud-gdb-history . 1))))

***************
*** 2078,2090 ****
         (filepart (and file-word (concat "-" (file-name-nondirectory file)))))
      (pop-to-buffer (concat "*gud" filepart "*"))
      ;; Set default-directory to the file's directory.
!     (and file-word
         ;; Don't set default-directory if no directory was specified.
         ;; In that case, either the file is found in the current directory,
         ;; in which case this setq is a no-op,
         ;; or it is found by searching PATH,
         ;; in which case we don't know what directory it was found in.
!        (file-name-directory file)
         (setq default-directory (file-name-directory file)))
      (or (bolp) (newline))
      (insert "Current directory is " default-directory "\n")
--- 2097,2109 ----
         (filepart (and file-word (concat "-" (file-name-nondirectory file)))))
      (pop-to-buffer (concat "*gud" filepart "*"))
      ;; Set default-directory to the file's directory.
!     (and file-word (and gud-switch-dir-upon-invocation
         ;; Don't set default-directory if no directory was specified.
         ;; In that case, either the file is found in the current directory,
         ;; in which case this setq is a no-op,
         ;; or it is found by searching PATH,
         ;; in which case we don't know what directory it was found in.
!        (file-name-directory file))
         (setq default-directory (file-name-directory file)))
      (or (bolp) (newline))
      (insert "Current directory is " default-directory "\n")


That's it.  Perhaps the same functionality could be encoded in a separate Lisp
file, but I couldn't figure out how to do this without duplicating a whole lot 
of
source code.

--Zem

"Stefan Monnier " wrote:

> The following message is a courtesy copy of an article
> that has been posted to gnu.emacs.bug as well.
>
> >>>>> "Ziemowit" == Ziemowit Laski <address@hidden> writes:
> > I've made small enhancements to three packages (mouse.el, menu-bar.el and
> > gud.el) that ship with GNU Emacs and was wondering whom I should send them 
> > to
> > and in which format (old + new, just diffs, etc.).
>
> The preferred way is to send context diffs.  If you want them included
> you should send them here (i.e. gnu.emacs.bugs) as feature requests.
>
>         Stefan
>
> PS: otherwise you can send them to gnu.emacs.sources.




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