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.

The pointer not being NULL is enough indication that the mark is set.

Also, rename the pointer from 'mark_begin' to simply 'mark', since
the former is kind of pleonastic.

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.

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).

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>

Without them, nano still compiles for me, with everything enabled,
even when using --enable-debug, --enable-utf8, and --with-slang.

Add missing spaces, remove excess spaces, and
replace groups of indentation spaces with tabs.

Searching for an empty string should be impossible, it should never
happen, but it is bit too hard to verify this at the moment.

And in the process transform the token DISABLE_HELP to ENABLE_HELP.

Call something a buffer when it refers to a linked list of linestructs,
and call something a linestruct when it is a struct that describes a
single line.

Replace them by a single subtraction.

The interval 2013-2017 for the Free Software Foundation is valid
because in those years there were releases with changes by either
Chris or David, and the GNU maintainers guide advises to mention
a new year in all files of a package, not just in the ones that
actually changed, and be done with it for the rest of the year.

Verify at startup that the number is not too small.

In softwrap mode, nano doesn't horizontally scroll lines at all, so in
this case get_page_start() should always return zero.

Windows doesn't have *nix style account databases.

Now that we pull in the gnulib regex module, we can assume it exists.

Switch over to gnulib for these.

Give the strlenpt() routine its own implementation, so that it avoids
a needless comparison plus subtraction in the inner loop.

These two functions unnecessarily copy make_new_node(); use that instead.

That is: remove the special treatment of BOW anchors, and instead make
regexes match against the whole line instead of against an artificially
shortened one, because the latter method creates ghost matches: matches
at the starting point of the search that aren't really matches when seen
in the context of the whole line.

This fixes https://savannah.gnu.org/bugs/?50030.

This fixes https://savannah.gnu.org/bugs/?50028.

A search should start at the place of the cursor, not one step beyond,
so that the non-word boundary between the current character and the next
will be found.  Starting one step beyond the current character, as was
done until now, would find the non-word boundary between the next and
the overnext character as the first one.

What is the point of parsing a number when you're not interested in
the result?  All callers of parse_num() pass a container for it.

This fixes https://savannah.gnu.org/bugs/?49933.

It doesn't align anything -- any allocations are already aligned to
whatever multiple is required -- it just shrinks the allocated space.

Nano would crash straight afterward if any of these asserts would fail,
so they don't add anything.  A few others are simply superfluous.