bug#4354: 23.0.60; delphi-mode: TAB should indent region in Transient Mark mode (with patch)

[Simon South <ssouth@slowcomputing.org>]

The patch below makes delphi-mode indent the region when the TAB key
is pressed, whenever Transient Mark mode is enabled and the region is
active.  (This became standard behaviour with Emacs 23.1 but wasn't
automatically reflected by delphi-mode as it defines its own TAB-key
binding.)

I've tested this with different combinations of transient-mark-mode,
delphi-tab-always-indents and delphi-newline-always-indents and it
appears to work fine.

Changes:

(delphi-tab): Indent region when Transient Mark mode is enabled and
region is active; otherwise indent or insert TAB as usual.
(delphi-mode): Update description of TAB-key binding.


Index: lisp/progmodes/delphi.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/progmodes/delphi.el,v
retrieving revision 3.33
diff -c -r3.33 delphi.el
*** lisp/progmodes/delphi.el	5 Jan 2009 03:23:27 -0000	3.33
--- lisp/progmodes/delphi.el	6 Sep 2009 03:33:09 -0000
***************
*** 1652,1665 ****
  
  
  (defun delphi-tab ()
!   "Indent the current line or insert a TAB, depending on the value of
! `delphi-tab-always-indents' and the current line position."
    (interactive)
!   (if (or delphi-tab-always-indents ; We are always indenting
!           ;; Or we are before the first non-space character on the line.
!           (save-excursion (skip-chars-backward delphi-space-chars) (bolp)))
!       (delphi-indent-line)
!     (insert "\t")))
  
  
  (defun delphi-is-directory (path)
--- 1652,1674 ----
  
  
  (defun delphi-tab ()
!   "Indent the region, when Transient Mark mode is enabled and the region is
! active. Otherwise, indent the current line or insert a TAB, depending on the
! value of `delphi-tab-always-indents' and the current line position."
    (interactive)
!   (cond ((use-region-p)
!          ;; If Transient Mark mode is enabled and the region is active, indent
!          ;; the entire region.
!          (indent-region (region-beginning) (region-end)))
!         ((or delphi-tab-always-indents
!              (save-excursion (skip-chars-backward delphi-space-chars) (bolp)))
!          ;; Otherwise, if we are configured always to indent (regardless of the
!          ;; point's position in the line) or we are before the first non-space
!          ;; character on the line, indent the line.
!          (delphi-indent-line))
!         (t
!          ;; Otherwise, insert a tab character.
!          (insert "\t"))))
  
  
  (defun delphi-is-directory (path)
***************
*** 1935,1941 ****
  ;;;###autoload
  (defun delphi-mode (&optional skip-initial-parsing)
    "Major mode for editing Delphi code. \\<delphi-mode-map>
! \\[delphi-tab]\t- Indents the current line for Delphi code.
  \\[delphi-find-unit]\t- Search for a Delphi source file.
  \\[delphi-fill-comment]\t- Fill the current comment.
  \\[delphi-new-comment-line]\t- If in a // comment, do a new comment line.
--- 1944,1951 ----
  ;;;###autoload
  (defun delphi-mode (&optional skip-initial-parsing)
    "Major mode for editing Delphi code. \\<delphi-mode-map>
! \\[delphi-tab]\t- Indents the current line (or region, if Transient Mark mode
! \t  is enabled and the region is active) of Delphi code.
  \\[delphi-find-unit]\t- Search for a Delphi source file.
  \\[delphi-fill-comment]\t- Fill the current comment.
  \\[delphi-new-comment-line]\t- If in a // comment, do a new comment line.