bump version numbers and add a news item for the 5.1 release

ChangeLog

@@ -1,3 +1,68 @@
+Changes between v5.0 and v5.1:
+------------------------------
+
+Benno Schulenberg (55):
+      anchor: in a UTF-8 locale, show an anchor as a diamond, for visibility
+      anchor: show an anchor also when the line is horizontally scrolled
+      bindings: make <Alt+Backspace> delete a word backwards, like in Bash
+      build: fix compilation for --enable-tiny --enable-nanorc --enable-color
+      build: fix compilation when configured with --enable-tiny
+      build: stop distributing the two old Changelogs
+      bump version numbers and add a news item for the 5.1 release
+      display: show the cursor position also right after the screen is resized
+      docs: fix a closing tag in the FAQ  [tidy]
+      docs: mention that anchors are visible when line numbers are shown
+      feedback: add the reason to the error message when forking fails
+      feedback: use three dots to indicate processing, like everywhere else
+      feedback: when creating a pipe fails, report also the reason
+      files: do not try writing to the status bar while not in curses mode
+      formatter: force the mark off, to not crash by accessing empty cutbuffer
+      gnulib: update to its current upstream state
+      help: list again the keystroke for toggling the help lines (M-X)
+      input: understand M-Bsp also when terminfo does not match the terminal
+      moving: make <Ctrl+Up> go to the top when above the cursor all is blank
+      rcfile: allow to bind M-[  (even though it is an escape-sequence starter)
+      softwrap: initialize the 'extrarows' value for the magic line correctly
+      speller: give proper feedback when the user tries to check emptiness
+      speller: give startup feedback (relevant when running on a Linux console)
+      speller: re-enter curses mode before trying to report an error
+      syntax: css: differentiate pseudo-classes (now cyan) from comments (blue)
+      syntax: default: colorize also "GNU nano 5.x"
+      tweaks: adjust the indentation after the previous change
+      tweaks: adjust the indentation after the previous change
+      tweaks: avoid a maybe-uninitialized-variable warning from gcc
+      tweaks: elide an unneeded variable, by transforming the key code directly
+      tweaks: elide two variables that are no longer needed, and update comment
+      tweaks: exclude old and mistaken "Esc O" sequences from the tiny version
+      tweaks: make a few more direct returns, and reshuffle another bit of code
+      tweaks: make a misplaced call of statusline() more obvious by crashing
+      tweaks: normalize the indentation after the previous change
+      tweaks: normalize the indentation, and regroup two lines
+      tweaks: optimize for byte-range characters, and shorten some comments
+      tweaks: parse the escape-sequence bytes without copying them first
+      tweaks: pass first byte of sequence directly to the decoding function
+      tweaks: print error message directly instead of passing it to the caller
+      tweaks: read keycodes from the keystroke buffer without copying them
+      tweaks: remove an unneeded beep, and reshuffle the lines for compactness
+      tweaks: reshuffle a few lines, to condense the code, and improve comment
+      tweaks: reshuffle four lines, for esthetics
+      tweaks: reshuffle some fragments, to make the next change easier
+      tweaks: reshuffle the zeroing of a counter, to allow some direct returns
+      tweaks: simplify two functions, as they now return always NULL
+      tweaks: split a function into two, one for "Esc O" and one for "Esc ["
+      tweaks: stop using a 'switch' when there are just three possibilities
+      verbatim: discard entire keystroke when it's not valid for Unicode Input
+      verbatim: do not report "Invalid code" when a Unicode character is typed
+      verbatim: do not report "Invalid code" when the terminal is resized
+      verbatim: insert the full code sequence when <Alt+Backspace> is pressed
+      verbatim: pause a little after an ESC, to not miss a succeeding code
+      verbatim: report and ignore an invalid keystroke for Unicode input
+
+Michalis Kokologiannakis (2):
+      build: avoid compilation warnings by using memcpy() instead of strncpy()
+      files: ignore only EPERM when fchmod() or fchown() fails
+
+
 Changes between v4.9 and v5.0:
 ------------------------------
 

IMPROVEMENTS

@@ -2,6 +2,7 @@ Improvements in GNU nano
 ========================
 
 Since 5.0:
+  - M-Bsp deletes a word leftward.
   - With --indicator a "scrollbar" is shown, indicating position+portion.
   - M-Ins places an anchor, M-PgUp/M-PgDn jump to the nearest anchor.
   - Toggling help lines (M-X) and Refresh (^L) work nearly everywhere.

NEWS

@@ -1,3 +1,13 @@
+2020.08.12 - GNU nano 5.1
+• M-Bsp (Alt+Backspace) deletes a word backwards, like in Bash.
+• M-[ has become bindable.  (Be careful, though: as it is the
+  starting combination of many escape sequences, avoid gluing
+  it together with other keystrokes, like in a macro.)
+• With --indicator and --softwrap, the first keystroke in an
+  empty buffer does not crash.
+• Invoking the formatter while text is marked does not crash.
+• In UTF-8 locales, an anchor is shown as a diamond.
+
 2020.07.29 - GNU nano 5.0 "Among the fields of barley"
 • With --indicator (or -q or 'set indicator') nano will show a kind
   of scrollbar on the righthand side of the screen to indicate where

configure.ac

@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see https://www.gnu.org/licenses/.
 
-AC_INIT([GNU nano], [5.0], [nano-devel@gnu.org], [nano])
+AC_INIT([GNU nano], [5.1], [nano-devel@gnu.org], [nano])
 AC_CONFIG_SRCDIR([src/nano.c])
 AC_CANONICAL_HOST
 AM_INIT_AUTOMAKE([1.14])

doc/faq.html

@@ -89,7 +89,7 @@
 <h3><a name="1.3"></a>1.3. Why the name change from TIP?</h3>
 <blockquote><p>On January 10, 2000, TIP was officially renamed to nano because of a namespace conflict with another program called 'tip'. The original 'tip' program &quot;establishes a full duplex terminal connection to a remote host&quot;, and was included with many older Unix systems (and newer ones like Solaris). The conflict was not noticed at first because there is no 'tip' utility included with most GNU/Linux distributions (where nano was developed).</p></blockquote>
 <h3><a name="1.4"></a>1.4. What is the current version of nano?</h3>
-<blockquote><p>The current version of nano <i>should</i> be <b>5.0</b>.  Of course, you should always check the <a href="https://nano-editor.org/">nano homepage</a> to see what the latest and greatest version is.</p></blockquote>
+<blockquote><p>The current version of nano <i>should</i> be <b>5.1</b>.  Of course, you should always check the <a href="https://nano-editor.org/">nano homepage</a> to see what the latest and greatest version is.</p></blockquote>
 <h3><a name="1.5"></a>1.5. I want to read the man page without having to download the program!</h3>
 <blockquote><p>Jeez, demanding, aren't we? Okay, look <a href="https://nano-editor.org/dist/latest/nano.1.html">here</a>.</p></blockquote>
 <hr width="100%">

doc/nano.1

@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <https://www.gnu.org/licenses/>.
 .\"
-.TH NANO 1 "version 5.0" "July 2020"
+.TH NANO 1 "version 5.1" "August 2020"
 
 .SH NAME
 nano \- Nano's ANOther editor, inspired by Pico

doc/nano.texi

@@ -8,8 +8,8 @@
 
 @smallbook
 @set EDITION 0.5
-@set VERSION 5.0
+@set VERSION 5.1
-@set UPDATED July 2020
+@set UPDATED August 2020
 
 @dircategory Editors
 @direntry
@@ -23,7 +23,7 @@
 @titlepage
 @title GNU @command{nano}
 @subtitle a small and friendly text editor
-@subtitle version 5.0
+@subtitle version 5.1
 
 @author Chris Allegretta
 @page
@@ -63,7 +63,7 @@ e-mail: @email{chrisa@@asty.org}@*
 @node Top
 @top
 
-This manual documents the GNU @command{nano} editor, version 5.0.
+This manual documents the GNU @command{nano} editor, version 5.1.
 
 @menu
 * Introduction::

doc/nanorc.5

@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <https://www.gnu.org/licenses/>.
 .\"
-.TH NANORC 5 "version 5.0" "July 2020"
+.TH NANORC 5 "version 5.1" "August 2020"
 
 .SH NAME
 nanorc \- GNU nano's configuration file

doc/rnano.1

@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <https://www.gnu.org/licenses/>.
 .\"
-.TH RNANO 1 "version 5.0" "July 2020"
+.TH RNANO 1 "version 5.1" "August 2020"
 
 .SH NAME
 rnano \- a restricted nano

roll-a-release.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-VERSION="5.0"
+VERSION="5.1"
 
 ./configure -C --enable-tiny &&  make &&  ./configure -C &&