Keeping the invisible cursor at the left edge avoids any line getting
scrolled horizontally.
This fixes https://savannah.gnu.org/bugs/?57991.
Bug existed since version 2.8.2, since the help texts got generated
and displayed in a different way in order to become searchable.
If the edit window consists of a single row, then the do_down() call
has already brought the desired line or chunk into view -- no attempt
should then be made to scroll the screen further.
This fixes https://savannah.gnu.org/bugs/?56553.
Bug existed since version 2.9.6, commit 0d9080a2.
Not stepping beyond the last line of the paragraph means that the
length of the paragraph is always the difference in line numbers
(between first and last line of the paragraph) plus one.
The functions do_para_begin() and do_para_end() can now move through any
buffer, while the functions do_para_begin_void() and do_para_end_void()
operate on the current buffer. The latter function also returns TRUE
if the last line in the buffer is part of the paragraph.
If the edit window consists of a single row, then the do_up() call has
already brought the desired line into view -- which means that trying
to scroll then (when already on the first line of the file) would fail.
This fixes https://savannah.gnu.org/bugs/?53891.
When 'afterends' is set and Ctrl+Right or Shift+Ctrl+Right is pressed,
nano will stop at the ends of words instead of their beginnings.
Signed-off-by: Mark-Weston <markweston@cock.li>
Signed-off-by: Benno Schulenberg <bensberg@telfort.nl>
When the cursor is on the top or bottom line of the edit window, and
an <Up> or <Down> pushes the cursor offscreen, then use edit_scroll()
to bring it back into view, instead of using edit_redraw(), because
the latter would redraw *every row* on the screen, which is a waste
of time.
This addresses https://savannah.gnu.org/bugs/?53562.
Reported-by: Devin Hussey <husseydevin@gmail.com>
When the cursor is on the first or last row of the edit window, and
thus Scroll-Down or Scroll-Up would push it offscreen, first move
the cursor away from the edge row and then scroll.
This fixes https://savannah.gnu.org/bugs/?53376.
When just scrolling and the cursor does not need to change position
(that is: it is not on the first or last row of the edit window),
then edit_scroll() has handled everything and there is no need to
additionally redraw anything or update 'placewewant'.
Instead of keeping the cursor in the same spot on the screen,
let the cursor move with the text (whenever possible).
This makes these functions behave the same as in Vim and Emacs.
Each leading tab is converted to two tabs, and any leading four spaces
is converted to one tab. The intended tab size (for keeping most lines
within 80 columns) is now four.
This fixes https://savannah.gnu.org/bugs/?52183.
Tested-by: David Lawrence Ramsey <pooka109@gmail.com>
Improved-by: David Lawrence Ramsey <pooka109@gmail.com>
When we've landed on a tab and we are moving down and the tab starts
before the current chunk, then push the index forward -- otherwise we
would not advance. When instead we're moving up and the end of the
preceding row is on the same tab as the target column AND the end of
the current row is not on that same tab, then there is some character
on this row that we can put the cursor on, so push the index forward
-- otherwise we would skip a usable row.
This fixes https://savannah.gnu.org/bugs/?52125
and fixes https://savannah.gnu.org/bugs/?52139.
When moving the cursor to the top-left corner, it is not necessary
to compute leftedge because firstcolumn IS the relevant leftedge.
Reported-by: Jordi Mallach <jordi@debian.org>
Benno Schulenberg