And also prevent a theoretical crash for restricted prompt functions.

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'.

Also, rename a parameter and invert its logic.

And adjust the comments accordingly.

Instead of weaving back and forth between do_search()/do_replace() and
search_init() every time that one of the options is toggled, just keep
looping in the latter function until the user presses <Enter>.

The weaving for the do_gotolinecolumn() function remains, but is
shortened to involve only search_init().

In this way a single keystroke can produce a fragment of text or a
series of commands, or a mix of the two.  It is like a prerecorded
macro.

This fulfills https://savannah.gnu.org/bugs/?52931.

This brings it in line with the other three "flip" toggles.

And one for me, for the much changed keyboard stuff.

Also remove an unneeded nulling.

When the palette is getting initialized, it is too late to send any
error messages about the rcfile options to standard error.

This fixes https://savannah.gnu.org/bugs/?52871

.
Reported-by: Brand Huntsman <alpha@qzx.com>
Signed-off-by: Brand Huntsman <alpha@qzx.com>

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.

When unindenting/uncommenting affected the bottom line of the marked
region, keep affecting this line also during subsequent consecutive
indenting/commenting.

This fixes https://savannah.gnu.org/bugs/?52718.

If the marked region ends at the start of a line, do not include that
line in the indenting/undenting or commenting/uncommenting.  This is
closer to what the eye would expect.

To get rid of two double negatives.

When some or all edits have been undone, and the user starts to make
new edits, the old part of the undo stack is discarded, but this does
not mean that the undo stack doesn't go back to the very beginning.

This really fixes https://savannah.gnu.org/bugs/?52504.

While doing that, move the affected function to the utils.c file
and tweak it a bit.

This fixes https://savannah.gnu.org/bugs/?52468.

Whenever a buffer is closed, check whether the positions file on disk
was modified, and if so, reload it.  Then update the position for the
closed buffer and write out the positions file to disk.
Signed-off-by: Brand Huntsman <alpha@qzx.com>
Signed-off-by: Benno Schulenberg <bensberg@telfort.nl>

When not finding a .nanorc file in the user's home directory, nano will
look for a nanorc file in $XDG_CONFIG_HOME and in the ~/.config/nano/
fallback directory.  And when not finding a .nano/ subdir in the user's
home directory, nano will look for (or create) the history files in
$XDG_DATA_HOME or in the ~/.local/share/nano/ fallback directory.

This is a partial implementation of the XDG Base Directory Specification:
https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html

,
for the purpose of reducing the clutter in a user's home directory, and
to make it easier to back up just the configuration files.
Signed-off-by: Simon Ochsenreither <simon@ochsenreither.de>
Signed-off-by: Benno Schulenberg <bensberg@telfort.nl>

Suggested-by: Brand Huntsman <alpha@qzx.com>