[ANNOUNCE] nano-5.7 is released

[Benno Schulenberg]

2021.04.29 - GNU nano 5.7  "Toți ceilalți arau câmpurile"

• The output of --constantshow (without --minibar) is more stable.
• When opening multiple buffers and there is an error message, this
  message is shown again upon first switch to the relevant buffer.
• The position and size of the indicator now follow actual lines,
  instead of visual lines when in softwrap mode, meaning that the
  size of the indicator can change when scrolling in softwrap mode.


GNU nano is a simple and easy-to-use editor for on the terminal.
  https://nano-editor.org/
  https://nano-editor.org/manual.html

A concise overview of nano's shortcut keystrokes:
  https://nano-editor.org/cheatsheet.html

The tarball and its signature are here:
  https://nano-editor.org/dist/v5/nano-5.7.tar.xz
  https://nano-editor.org/dist/v5/nano-5.7.tar.xz.asc


Specific issues that were addressed in this release:
  https://savannah.gnu.org/bugs/?60104  (memory leak when undoing unindenting)
  https://savannah.gnu.org/bugs/?60172  (memory leak when pasting with syntax)
  https://savannah.gnu.org/bugs/?60262  (invalid Unicodes were mispresented)
  https://savannah.gnu.org/bugs/?60263  (some codes were misjudged as invalid)
  https://savannah.gnu.org/bugs/?60278  (unwritable DOS file got Unix format)

  https://savannah.gnu.org/bugs/?60315  (wrong message when ^G was rebound)
  https://savannah.gnu.org/bugs/?60393  (rare cursor misplacement on OpenBSD)
  https://savannah.gnu.org/bugs/?60429  (toggling line numbers could be slow)
  https://savannah.gnu.org/bugs/?60436  (use-after-free for an offscreen undo)
  https://savannah.gnu.org/bugs/?60456  (CR was miscolored as valid)


Changes between v5.6.1 and v5.7:
--------------------------------

Mike Frysinger (1):
      syntax: tcl: support Expect scripts too

Hussam al-Homsi (1):
      syntax: c: make the highlighting of '#include <...>' more compliant

Benno Schulenberg (63):
      build: drop the check for two functions that we don't use any more
      build: fix compilation for --enable-tiny plus --enable-multibuffer
      build: fix compilation when configured with --disable-multibuffer
      build: fix compilation when configured with --enable-tiny
      bump version numbers and add a news item for the 5.7 release
      chars: implement mblen() ourselves, for efficiency
      chars: implement mbtowc() ourselves, for more efficiency
      chars: work around a UTF-8 bug in glibc, to display invalid codes right
      chars: work around the wrong private-use-character widths on OpenBSD
      display: avoid determining twice from and until where to draw each row
      display: make the output of --constantshow less jittery
      editing: prevent the pointer for the top row from becoming dangling
      feedback: upon first switch to a buffer, show its error message (if any)
      files: always register the format, also when the file is unwritable
      files: create a new buffer earlier, so that error messages can be stored
      files: when Mac format has been detected, stay with it
      gnulib: pull in the fix for a build problem on older Debian
      gnulib: update to its current upstream state
      indicator: adjust the size to the number of visible lines, not chunks
      input: accept Unicode codes for non-characters as valid, since they are
      memory: do not allocate space for multidata when it's already allocated
      memory: fix an off-by-one error to free also the last line in a group
      memory: prevent a use-after-free when the user respects a lock file
      oops: that doesn't work -- you can't break out of two for loops at once
      options: retire the obsolete 'smooth', 'morespace', and 'nopauses'
      po: update translations and regenerate POT file and PO files
      softwrap: avoid time-consuming computations, to burden large files less
      startup: do not crash when trying to open a device or directory
      startup: do not store an error message in the record of another buffer
      startup: save the compiled file-matching regexes, to avoid recompiling
      startup: show the helpful message only when ^G has not been rebound
      syntax: c: colorize also labels that contain digits, and uncolorize colon
      syntax: po: improve the coloring of format specifiers
      syntaxes: replace [[:space:]] with [[:blank:]] to exclude carriage return
      tweaks: adjust and improve one comment, and frob another
      tweaks: adjust two comments, and reshuffle two fragments
      tweaks: avoid a warning on newer compilers, by writing an extra byte
      tweaks: avoid calling extra_chunks_in() when not softwrapping
      tweaks: avoid converting a file name for more than will fit on screen
      tweaks: avoid parsing a multibyte character twice
      tweaks: condense three comments, drop another, and rewrap a line
      tweaks: drop unneeded braces and adjust indentation after previous change
      tweaks: elide a call of strlen() for every row
      tweaks: elide a function that is now basically just two lines
      tweaks: elide an unneeded resetting NULL call to wctomb()
      tweaks: elide a small function that is used just once
      tweaks: elide the pointless is_valid_unicode() function
      tweaks: elide two more instances of useless character copying
      tweaks: improve a couple of comments
      tweaks: morph a function into what it is actually used for
      tweaks: normalize the indentation after an earlier change
      tweaks: put the most likely condition first, for a quicker return
      tweaks: reduce the maximum character length from six bytes to four
      tweaks: remove a misplaced (and nested) #ifdef
      tweaks: rename a variable, away from an abbreviation
      tweaks: rename a variable, for contrast with another
      tweaks: reshuffle a comment, and put the main extension first
      tweaks: reshuffle a fragment of code, to prepare for the next change
      tweaks: reshuffle two conditions, to have the most unlikely one first
      tweaks: set the file format only when unset, so it doesn't need saving
      tweaks: shorten a comment and trim an #ifdef
      tweaks: simplify two fragments of code
      tweaks: simplify two fragments of code, eliding useless character copying

-- 

Benno

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