This allows for commenting or uncommenting a line or a bunch of lines
with a single keystroke (default binding: M-3).  The characters used
for commenting/uncommenting are specified by the active syntax file.
Reviewed-by: Benno Schulenberg <bensberg@justemail.net>
Signed-off-by: Mike Scalora <mike@scalora.org>

Error messages about lock files should not get overwritten by purely
informational messages, only by alerting ones.

This fixes https://savannah.gnu.org/bugs/?47963.

If during startup there are multiple error messages, currently only the
last one remains and can be read.  To improve on that, introduce a short
pause between error messages -- even if it's not enough to read them all,
at least the user will be aware that there are multiple ones.

This also causes a few error messages to beep that currently don't beep,
such as when a file is unwritable.

If nano has less than four columns available, it will die,
so there will always be room for at least four characters.

Add a third mode of scrolling, FLOWING, besides CENTERING and STATIONARY.
This is used for word and paragraph jumping (and for bracket matching,
but that worked correctly already), and only when focusing is FALSE.

The new mode prevents the screen from scrolling too many lines when
there are several blank lines at the bottom of the edit window and
the next word or paragraph is out of view.

This fixes https://savannah.gnu.org/bugs/?47194.

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to file extensions, but also to header lines and magic strings.


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        * Add ability to kill the trailing spaces when justifying
        code.  New nanorc option kill_spaces_on_wrap, we'll see
        whether this warrants a command line flahg or not.



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With this option, nano would simply refuse to write to any symlinked file;
if anyone really used this option, they would certainly have complained.


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This fixes Savannah bug #45523.


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MALLOC_PERTURB_; nano shouldn't override them.


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ncurses for the keycodes.  This addresses Debian bug #800681.


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Change was suggested by Mike Frysinger.


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to save a file by default in Unix format.


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tried to delete the final, magic newline.


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happens but only when checking for keyboard input.  It now reports the
SIGWINCH via a special key value to the calling routine, to allow not
only the main editor but also the help viewer and the file browser to
adapt their display to the new size.
Patch by Mahyar Abbaspour, somewhat edited by Benno.


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        * New formatter code to support syntaxes like
        go which have tools to automatically lint and reformat the text for
        you (gofmt), which is lovely.  rcfile option formatter, function
        text.c:do_formatter() and some other calls.



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(that is, when CUT_TO_END is set) properly.
Patch by Mark Majeres.


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and mapping these codes to Prevword and Nextword.


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to reduce the slight confusion with DIR meaning directory.


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This completes the fix for Savannah bug #42539.


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