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minor modes as well.

Merge from gnus--rel--5.10

Patches applied:

 * miles@gnu.org--gnu-2005/gnus--rel--5.10--patch-27
   Update from CVS

2005-02-21  Reiner Steib  <Reiner.Steib@gmx.de>

   * lisp/gnus/gnus-art.el (gnus-parse-news-url, gnus-button-handle-news):
   Handle news URL with given port correctly.

completing-read.  Suggested by Juan-Leon Lahoz Garcia.

strings in try-completion and all-completions.

and symbol keys in alists and hash tables.

(browse-url-netscape): Use it.  Suggested by "Johann 'Myrkraverk'
Oskarsson" <myrkraverk@users.sourceforget.net>.

mouse-on-link-p so it can check selected window.

check that window of that event is the selected window.
(mouse-drag-region-1): Compare mouse event window to selected
window before setting point.

(ps-mule-show-warning): New function.
(ps-mule-begin-job): Use ps-mule-show-warning if unprintable
characters are found.

and footer strings.

handle partial visible line at end of window even when we hit PT.

(file-name-coding-system): Only set it for MacOS-9.  The other case is
already handled in mule-cmds.el (where it also works when mac-win.el
is not used).

" *code-converting-work*" buffer for work.

I think those asserts are bogus if buffer contains invisible text
or images.

outside the restricted area of the buffer.

position.  Always get the full ascent / descent of the
corresponding row, to return reliable rtop and rbot values.
(back_to_previous_visible_line_start): Fix 2005-01-18 change.
Must look one character back, as back_to_previous_line_start
returns position after the newline.
(move_it_vertically_backward): Fix heuristic for when to move further
back in case line_height * 2/3 is larger than window height.
(cursor_row_fully_visible_p): Rename make_cursor_line_fully_visible_p
as it does not do anything anymore.  Add arg current_matrix_p to
use current matrix rather than desired matrix when set.
(try_cursor_movement): Don't scroll to make cursor row fully
visible if cursor didn't move.  This avoids unexpected recentering
in case of blinking cursor or accepting process output.
Use current matrix to check cursor row visibility.
(redisplay_window): Fix whether to recenter or move to top in case
cursor line is taller than window height.
(find_first_unchanged_at_end_row): Stop search if we reach a row
which not enabled (instead of abort).

must be set to perform auto-window-vscroll.
When moving backwards and doing auto-window-vscroll, automatically
vscroll to the last part of lines which are taller than the window.
(next-line, previous-line): Set try-vscroll arg on line-move.