Any control character is represented by a ^ plus an ASCII character.

Instead of showing the upper control codes like this:

   ^À ^Á ^Â ^Ã ^Ä ^Å ^Æ ^Ç ^È ^É ^Ê ^Ë ^Ì ^Í ^Î ^Ï
   ^Ð ^Ñ ^Ò ^Ó ^Ô ^Õ ^Ö ^× ^Ø ^Ù ^Ú ^Û ^Ü ^Ý ^Þ ^ß

show them like this:

   ^` ^a ^b ^c ^d ^e ^f ^g ^h ^i ^j ^k ^l ^m ^n ^o
   ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^{ ^| ^} ^~ ^=

The lower control codes continue to be shown like this:

   ^@ ^A ^B ^C ^D ^E ^F ^G ^H ^I ^J ^K ^L ^M ^N ^O
   ^P ^Q ^R ^S ^T ^U ^V ^W ^X ^Y ^Z ^[ ^\ ^] ^^ ^_

The representation of DEL (0x7F) continues as ^?.

Further, use knowledge of UTF-8 to avoid a roundtrip through
wide characters.

This fixes the second part of https://savannah.gnu.org/bugs/?48331

.
Reported-by: Mike Frysinger <vapier@gentoo.org>

This fixes the first part of https://savannah.gnu.org/bugs/?48331

.
Reported-by: Mike Frysinger <vapier@gentoo.org>

This fixes https://savannah.gnu.org/bugs/?47962 reported by Cody Taylor.

By removing from their main loops a condition that occurs just once.

Do the casting from integer to character rightaway in the first
intermediate buffer.

Just like when reading a file fails.  It needs the user's attention.

So we don't have to remember its awkward target name.

This fixes https://savannah.gnu.org/bugs/?48286

.
Reviewed-by: Benno Schulenberg <bensberg@justemail.net>
Signed-off-by: Rishabh Dave <rishabhddave@gmail.com>

Keystrokes are single integers (aided by the flags meta_key and
func_key) but in the input stream they can be encoded as escape
sequences (a series of bytes).  Characters are values in byte
range, but in UTF-8 one character can consist of multiple bytes.

Also rename two variables, because the secondary input buffer
that they refer to contains only characters (mostly just one),
never any shortcuts; and there are too many "kbinput" already.

Typing a Unicode code is always finished after at most six characters:
either retval == uni or retval == kbinput, but it can't be ERR.

With tweaks from Andrea Canciani, Ben Young, Tennix, and Dirkjan Ochtman.

This fulfills https://savannah.gnu.org/bugs/?48163.

The negatives are taken to mean: from the end of the file,
and: from the end of the line.

This fulfills https://savannah.gnu.org/bugs/?48248.

Also, other messages that are about --operatingdir don't use the term
"confined" either.
Suggested-by: Mario Blättermann <mario.blaettermann@gmail.com>

Fix references to an old dist dir in FAQ and RPM spec file.

Switch to https and drop the www. prefix for all occurrences of the
website URL.

This fixes https://savannah.gnu.org/bugs/?48282.

This fixes https://savannah.gnu.org/bugs/?48283.

Don't make it the responsibility of the executed functions to restore
the list of shortcuts of the edit window.  Just detect whether another
menu was displayed, and if so, redisplay the main menu.

And don't bother running configure and make upstairs; here is enough.

The way to update nano.pot is to run 'make nano.pot-update' in the po
subdir.  Updating a specific PO file is then done with 'make xx.po'.

(The script mistakenly included all leading comments, not just the
ones marked with "TRANSLATORS:".)

It sounded like an instigation to upgrade, or like a list of
instructions on how to upgrade.  But it is merely a list of
noteworthy changes -- what other packages put in the NEWS file.