The function get_key_buffer() assumes waiting_mode = TRUE, but stdin
can be in non-blocking mode when a program (before nano) turned stdin
to non-blocking mode and did not change it back (possibly because it
crashed).  So, explicitly set stdin to blocking mode at startup.
Signed-off-by: Lion Yang <lion@aosc.io>

Also, diversify them, and no longer mark them for translation.

Also, properly refer to numreplaced as signed, since it's ssize_t
(even though it's only shown when positive).

This fixes https://savannah.gnu.org/bugs/?52339.

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>

If the user uses a single version of nano, they have no need for
--quiet.  If they do sometimes use an older version and don't want
to see the warnings, they can use 2>/dev/null (they could make an
alias for that and put it before the call of nano).

The user told nano to start, thus nano should *start* -- without
halting and without nagging the user.

Initialize 'breaking_col' to what it needs to be when the current chunk
consists of only a tab -- a tab that spreads across both start and end
of the chunk -- so that the last 'if' can move into the preceding one,
which allows the elision of 'char_len'.

In the tiny version, do_prompt() will now have an extra NULL
parameter, which will cost maybe twenty extra bytes of code.
That is acceptable when it saves thirty lines in the source.

The key sequence ^R ^X M-F <Enter> would cause nano to abort, because
it would try to add an empty string to a history list.  (Furthermore,
simply don't execute an empty command, because it is pointless.)
Reported-by: Marco Diego Aurélio Mesquita <marcodiegomesquita@gmail.com>

And use a better word to describe the concise descriptions that
these constants refer to -- they are not messages.

Reported-by: David Lawrence Ramsey <pooka109@gmail.com>

This completes the fix for https://savannah.gnu.org/bugs/?52282

.
Reported-by: Chime Hart <chime@hubert-humphrey.com>

After any replacements were made, the "not found" message is pointless
because it will be overwritten rightaway by "Replaced xx occurrences".
The message is confusing and annoying when using speech output.

This partially fixes https://savannah.gnu.org/bugs/?52282

.
Reported-by: Chime Hart <chime@hubert-humphrey.com>

This addresses https://savannah.gnu.org/bugs/?52257.

This fixes https://savannah.gnu.org/bugs/?52258

.
Reported-by: Peter Passchier <peter@passchier.net>

This fixes https://savannah.gnu.org/bugs/?52183

.
Tested-by: David Lawrence Ramsey <pooka109@gmail.com>
Improved-by: David Lawrence Ramsey <pooka109@gmail.com>

List "browser", "pageup" and "pagedown" in the manuals; the first
because it matches "speller", and the latter two because they are
what these functions are commonly known by.  The names "tofiles",
"prevpage" and "nextpage" are now undocumented, but they are still
recognized by the code, as they match the tags for these functions.

Most people who make use of 'do_findprevious' and 'do_findnext'
will not make use of 'do_search' (the default binding of M-W),
so for them it is superfluous to remember the state of the
Backwards toggle in the Search menu.  For the people that do
mix the usage of Alt+Up/Down with M-W, it means that M-W will
always search in the same direction as the last search.  It is
a small change in behavior.

This fixes https://savannah.gnu.org/bugs/?52246.

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