Changes between v5.1 and v5.2:
------------------------------

Benno Schulenberg (30):
      build: stop distributing the README.GIT file
      build: stop mentioning Slang in two ./configure messages
      bump version numbers and add a news item for the 5.2 release
      display: restore the ability to resize the screen while searching
      docs: add a cross-reference from 'findbracket' to 'set matchbrackets'
      docs: adjust description of ^T in cheatsheet, and mention M-Bsp
      docs: mention in the FAQ how to change the escape sequences of urxvt
      docs: reshuffle the section about the file browser to a better place
      gnulib: back away from a commit that causes trouble when using clang
      gnulib: update to its current upstream state
      history: do not interpret a failing stat() as an error
      input: allow also a Meta keystroke to abort a Search command
      input: dawdle after an ESC also when --rawsequences is used
      input: discard any multibyte character when <Alt> is being held
      input: do not enter invalid bytes when holding down both Alt keys
      input: hold on to a shift-selected region when an unbound key is struck
      rcfile: make sure that "bright"/"light" are prefixes, not separate words
      replacing: do not try to wipe nonexistent multidata, to avoid crashing
      search: poll the input stream directly, not nano's own keystroke buffer
      search: retain the current answer when something is toggled
      tweaks: adjust a comment, and reshuffle the setting of a boolean
      tweaks: condense two declarations
      tweaks: condense two fragments of code, for compactness
      tweaks: elide an unneeded variable
      tweaks: improve three comments and an indentation
      tweaks: move the keyboard-checking code to the end of the search loop
      tweaks: remove a variable and two functions that have become redundant
      tweaks: rename a variable, to not seem to refer to the scrollbar
      tweaks: reshuffle four declarations, and rename two variables
      verbatim: reserve enough space for the result also in non-UTF-8 locales


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:
------------------------------

Andreas K. Foerster (1):
      syntax: ada: new file -- coloring rules for Ada 2012 files

Benno Schulenberg (374):
      anchor: do not let a full justification transfer an anchor to the top
      anchor: do not let piping and spelling transfer an anchor to the top
      anchor: during full justification preserve anchors as during single ones
      backup: do not understand ^C as "Yes" when asking whether to continue
      backup: when rereading the original file fails, ask the user what to do
      bindings: add mistakenly removed M-J (Full Justify) back to the main menu
      bindings: add ^Z (Suspend) to the "Execute Command" menu
      bindings: allow toggling the help lines at several prompts and in browser
      bindings: allow typing digits on the numeric keypad by holding Shift
      bindings: make ^L (Refresh) work at all the prompts too
      bindings: make ^T invoke the "Execute Command" menu, and ^T^T the Speller
      bindings: remove the Full-Justify function from the Search menu
      bindings: stop <Alt+operator> on the keypad from entering spurious letter
      bindings: stop supporting <Esc> <Esc> <numeric slash> without NumLock
      build: allow compilation to succeed on curses without italic support
      build: do not let --disable-speller exclude also the formatter code
      build: fix compilation for --enable-tiny --enable-color --enable-nanorc
      build: fix compilation when configured with --disable-color
      build: fix compilation when configured with --disable-speller
      build: fix compilation when configured with --enable-tiny
      build: fix compilation when configured with --enable-tiny
      build: fix miscompilation for --enable-{tiny,color,nanorc}
      build: fix the Makefile after two header files were renamed
      build: make a deeper clone of gnulib (when building from git)
      build: make ./configure report which global nanorc file will be used
      build: replace the non-standard backslash escape "\e" with "\x1B"
      build: stop distributing a nano.spec file
      build: use a more dependable method for detecting a build from git
      bump version numbers and add a news item for the 5.0 release
      color: avoid allocating emptiness when there are no multiline regexes
      color: when syntax coloring is toggled back on, calculate multiline data
      colors: move purple one step away from magenta, and use a darker mauve
      copying: change the implementation, away from cutting plus copying back
      copying: do not forget to update the screen when M-6 is pressed
      copying: when using M-6, copy the final line in the buffer just once
      copying: with --nonewlines, don't add a final newline to the cutbuffer
      counting: count words and characters without partitioning the file
      counting: count words correctly also when --wordchars is used
      cutting: change the implementation of cutting to not use partitioning
      cutting: overhaul the pasting routine, to not make use of partitioning
      display: avoid an additional redrawing when redrawing the screen
      display: blank the status bar for a copy operation, like for cut & paste
      display: do not try to draw content when there is no open buffer yet
      display: reposition the cursor after an error message also in a help text
      docs: complete the renaming of 'tempfile' to 'saveonexit'
      docs: copy the 4.9.1 news item from the release branch
      docs: copy the 4.9.2 news item from the release branch
      docs: copy the 4.9.3 news item from the release branch
      docs: document the --indicator (-q) and 'set indicator' options
      docs: document the new -O/--bookstyle and 'set bookstyle' options
      docs: explain how anchors work, and document their bindable functions
      docs: improve some descriptions concerning the file browser
      docs: in the sample nanorc file, refer instead of duplicating
      docs: mention that doing a full-buffer operation wipes away all anchors
      docs: mention that M-X toggle is special, because available in most menus
      docs: mention that the dedicated cursor-moving keys are not rebindable
      docs: mention the nine new color names, and "bold" plus "italic"
      docs: note Marco as the original author of the bookmarking code
      docs: reduce the TODO file to a reference to the bug tracker on Savannah
      docs: stop mentioning that --wordchars overrides --wordbounds
      docs: use 'bold' and 'light' instead of 'bright' in the sample nanorc
      feedback: beep also at a prompt when receiving an unknown escape sequence
      feedback: do not list "." and ".." as possible <Tab><Tab> completions
      feedback: indicate an anchor with a "+" in the line-number margin
      feedback: show a message also when trying to copy an empty region
      feedback: show the cursor position also at startup in an empty buffer
      feedback: skip wiping the prompt bar when the shortcut printed a message
      files: also when creating a backup fails, ask the user whether to proceed
      files: ask the user whether to proceed every time a backup fails
      files: before prompting, show also the reason why the backup failed
      files: disallow tabbing when in restricted mode
      files: do not append but truncate when allowing insecure backups
      files: do not let a stray CR in a DOS file trigger Mac format
      files: do not make a failsafe backup when in restricted mode
      files: give a more precise warning when deleting an existing backup fails
      files: ignore errors when calling chmod() on a backup file
      files: ignore errors when calling chown() on a backup file
      files: ignore errors when calling futimens() on a backup file
      files: list possible completions after just one <Tab> instead of two
      files: make a backup only when requested, not an unrequested failsafe one
      files: make better use of the last row when there are many completions
      files: make filtering of the entire buffer into a new buffer work again
      files: never report a file as being of mixed format
      files: reinitialize the palette only when the syntax actually changed
      files: remove two superfluous calls for shielding temp files from others
      files: show a warning when writing a backup fails, before prompting
      files: show possible tab completions near the bottom of the edit window
      files: take into account that also closing a backup file can fail
      files: trigger the Easter egg only when "zzy" is typed at the prompt
      files: warn the root user when all the write bits are missing
      files: write out a marked region without partitioning the buffer
      general: make five tools accessible through the "Execute Command" menu
      general: rename "bookmark" to "anchor", to sound less permanent
      gnulib: update to its current upstream state
      help: describe what has been added to the "Execute Command" menu
      help: pair the items in the two bottom lines better in the tiny version
      help: put the two toggles first in the "Execute Command" menu
      history: don't send error messages to the screen; store them in the queue
      history: take into account that closing a file can fail
      history: take into account that statting a file can fail too
      indicator: recompute the extra rows also for cut/paste/split/join
      indicator: recompute the extra rows also when justifying and resizing
      indicator: rework how the "scrollbar" is computed when softwrapping
      input: interpret an escape sequence only when it starts with "[" or "O"
      input: reset the counters when a three-digit sequence is not completed
      input: stop recognizing the raw escape sequences for F13 to F16
      locking: ignore the insecure-backup flag when creating a lock file
      locking: prevent a symlink attack by not opening an existing lock file
      memory: plug a leak, by freeing the cutbuffer after a bracketed paste
      menus: remove unneeded words and shortenings from key labels
      new feature: a position-plus-portion indicator on the righthand side
      oops -- restore an accidentally changed file
      options: add --indicator and -q for switching on the scroll-bar thing
      options: add -O/--bookstyle to make leading whitespace mean new paragraph
      options: let --afterends affect also the deleting of words (Ctrl+Delete)
      options: make -S the short synonym of --softwrap
      options: rename --tempfile to --saveonexit, to be far clearer
      options: stop recognizing the obsolete --morespace and --smooth
      prompt: at Yes-No, do not treat a screen resize as an invalid keystroke
      rcfile: accept prefix "light" to make a color brighter without bolding it
      rcfile: add bindable function 'execute', for access to "Execute Command"
      rcfile: allow specifying a bright background color (with prefix "light")
      rcfile: complain when an essential key binding is missing
      rcfile: do not complain when "bright" is used with a background color
      rcfile: introduce nine new named colors, from "pink" to "latte"
      rcfile: introduce the modifier "bold", for specifying bolding separately
      rcfile: introduce the modifier 'italic', for slanted text
      rcfile: rename bindable function 'curpos' to 'location'
      rcfile: rename 'extcmd' to 'execute', to be more readable and fitting
      rcfile: report the first bad color element, not a later one that is okay
      rcfile: restore terminal settings when exiting upon excessive unbindings
      replacing: recalculate the multiline coloring info when needed
      scrolling: add a function and a key binding to center the cursor line
      speller: take into account that statting a file can fail  [coverity]
      startup: allow presetting case-sensitive search also in the tiny version
      startup: check stdout instead of stdin when probing for a Linux console
      startup: enter curses mode before reading the nanorc files
      startup: initialize colors only when the terminal is capable of colors
      syntax: css: color multiline comments correctly
      syntax: default: colorize embedded control codes
      syntax: email: rename file and syntax, away from the mistaken 'mutt'
      syntax: markdown: do not colorize text between two bold words as italic
      syntax: markdown: new file -- coloring rules for Markdown files
      syntax: mgp: drop the almost-empty MagicPoint file and syntax
      syntax: move distro-specific files down to a subdirectory, syntax/extra/
      syntax: nanorc: colorize 'bright' anyway, so existing syntaxes look okay
      syntax: nanorc: colorize the new named colors too, from "mint" to "mauve"
      syntax: nanorc: stop colorizing 'bright', even though it's still accepted
      syntax: sql: condense some regexes, and reduce their number
      syntax: sql: rename the file to match the name of the syntax
      syntaxes: move the rules for Fortran and Povray files down to extra/
      syntaxes: remove some stuff that has been commented out for a long time
      syntaxes: remove some superfluous outer parentheses from regexes
      syntaxes: remove unneeded backslash escapes before quotes
      syntaxes: uniformize the initial comment
      tabbing: beep at the first listing, and when there are zero possibilities
      tabbing: properly terminate the answer when the sole match is a folder
      text: retain a bookmark when two lines are joined or something is cut
      tweaks: add a condition, so that two ifs can be elided
      tweaks: add a helpful message for when pkg.m4 is missing during a build
      tweaks: add a helping variable, in order to unwrap three lines
      tweaks: add a helping variable, to slightly condense the code
      tweaks: add a symbol, in order to condense three function calls
      tweaks: add four early returns for read/write errors of history files
      tweaks: add four more translator hints
      tweaks: add two comments, and improve another
      tweaks: adjust comments and indentation after the previous change
      tweaks: adjust the conditional help-item pairing for absence of speller
      tweaks: adjust the file format indicator in a quicker way
      tweaks: adjust the indentation after the previous change
      tweask: adjust the indentation after the previous change
      tweaks: avoid a compiler warning
      tweaks: avoid a function call when a simple boolean will do
      tweaks: avoid an unnecessary refresh for zero or just one completion
      tweaks: avoid a warning about an unused variable in the tiny version
      tweaks: avoid checking a variable three times for each pass in the loop
      tweaks: avoid unneeded calls of free() by reallocating the full name
      tweaks: call init_pair() just once for each pair number
      tweaks: call the spotlighting routines only for the relevant line
      tweaks: call use_default_colors() just once for each run
      tweaks: cascade the ifs properly: without increasing the indentation
      tweaks: change a helping variable, to make two blocks still more similar
      tweaks: change a 'switch' to 'if', to elide a dummy 'return'
      tweaks: close opened files when something goes wrong  [coverity]
      tweaks: condense a bit of code, by reusing an existing variable
      tweaks: condense a comment, and express a condition in a different way
      tweaks: condense a comment, and reshuffle a few lines
      tweaks: condense a comment, and reshuffle some conditions
      tweaks: condense and improve some comments
      tweaks: condense some cases to a single line, for more clarity
      tweaks: condense the code a little further, by grouping things better
      tweaks: correct a comment, and avoid third repetition of some conditions
      tweaks: correct a comment, and drop a redundant (because nested) #ifdef
      tweaks: correct some comments, as VT100 and such have smaller keypads
      tweaks: correct two spelling mistakes  [codespell]
      tweaks: delete a ChangeLog that is no longer updated and is incomplete
      tweaks: delete another pointless ChangeLog
      tweaks: delete a now-unused function
      tweaks: delete some unneeded code, and rename the function accordingly
      tweaks: delete the now-unused partitioning and unpartitioning routines
      tweaks: delete two functions that are never executed
      tweaks: do not use 'switch' when there are just two possibilities
      tweaks: do not use the string "stat()" in any of the comments
      tweaks: don't bother overwriting a CR -- decreasing the length is enough
      tweaks: don't bother statting the lock file before unlinking it
      tweaks: don't bother using the exclusive flag when creating a lock file
      tweaks: don't check for escape sequences that start with a lowercase "o"
      tweaks: don't use a symbol for other purposes
      tweaks: do the conversion of -1 to a specific color just once
      tweaks: do the saving of histories in a single place
      tweaks: drop an unneeded assignment, and reshuffle a few lines
      tweaks: drop a superfluous check for a non-zero length
      tweaks: drop obsolete 'nano.spec' from .gitignore file, and reshuffle
      tweaks: drop two redundant conditions, and improve three comments
      tweaks: drop two unneeded assignments
      tweaks: drop two unneeded wnoutrefresh() calls in the spotlight routines
      tweaks: elide a function that is called just once
      tweaks: elide a function that is too sparse
      tweaks: elide another parameter, relevant in just three menus
      tweaks: elide a now-unused parameter -- it is always FALSE
      tweaks: elide an unneeded call of strlen(), and copy NUL byte with string
      tweaks: elide an unneeded global variable
      tweaks: elide an unneeded parameter, and rename the other
      tweaks: elide an unneeded variable, as there is nothing beyond '*place'
      tweaks: elide an unused parameter, and rename the other and a variable
      tweaks: elide a parameter, by calling the relevant function beforehand
      tweaks: elide a parameter that is relevant for only one menu (Goto Dir)
      tweaks: elide a redundant intermediate function
      tweaks: elide a variable and be more direct, and rename another
      tweaks: elide a variable, and shortcircuit a return
      tweaks: elide a variable, by returning the result directly
      tweaks: elide a wrapper function, by checking a precondition earlier
      tweaks: elide three functions that are called just once
      tweaks: elide three parameters, as they are the same for both calls
      tweaks: elide two ifs for the most likely case, when defaults are allowed
      tweaks: elide two redundant calls of strchr()
      tweaks: exclude a bit of bracketed-paste code from the tiny version
      tweaks: exclude an unneeded fragment of code from the tiny version
      tweaks: exit from the writing loop as soon as the last line is reached
      tweaks: fix twenty typos, in old Changelogs and in some comments
      tweaks: fold translation of all modified keypad keystrokes together
      tweaks: fold two blocks into each other, to elide three overlapping cases
      tweaks: for each version, mention the changes to the PO files last
      tweaks: get rid of a bunch of annoying casts, and thus condense the code
      tweaks: group the exiting routines together, and condense the comments
      tweaks: handle the double escapes directly, instead of going round again
      tweaks: handle two similar things in the same way
      tweaks: implement the anchor routines in a different way
      tweaks: improve a comment, rename a function, and elide a parameter
      tweaks: improve a comment, reshuffle a scroll command, elide a variable
      tweaks: improve four comments
      tweaks: improve several comments, and rewrap two lines
      tweaks: improve some comments, and reshuffle an assignment
      tweaks: improve some comments and whitespace, and reshuffle a few lines
      tweaks: improve three comments, drop one, and unwrap a line
      tweaks: improve two comments, and reshuffle some lines for conciseness
      tweaks: invert a condition, to have two clauses in a more logical order
      tweaks: invert a condition, to see the similarity between the two modes
      tweaks: make an early return for zero matches, and rename a variable
      tweaks: make an error message more accurate and reduce it to its essence
      tweaks: make three hard-bindings of special keys more efficiently
      tweaks: move a copyright notice to a better place, and improve it
      tweaks: move a fragment of code to the one branch that needs it
      tweaks: move a function to a more logical place
      tweaks: move a function to before the one that calls it
      tweaks: move a function to before the one that calls it
      tweaks: move a function, to be in the order in which they are called
      tweaks: move a function to the file where it is used the most
      tweaks: move an 'if', to not call leftedge_for() when not softwrapping
      tweaks: move an initialization function to before the one that calls it
      tweaks: move two functions, to have them in a more logical order
      tweaks: normalize the indentation after the previous change
      tweaks: normalize the indentation after the previous change
      tweaks: normalize the indentation after the previous change
      tweaks: normalize the indentation after the previous change
      tweaks: normalize the indentation after the previous change
      tweaks: order three menu names in the documentation slightly better
      tweaks: plug a leak, by always freeing the full filename  [valgrind]
      tweaks: rake a common statement to the end of the case
      tweaks: recalculate the multiline info just once when doing "Replace All"
      tweaks: reduce the indentation after the previous change
      tweaks: remove an incorrect mention of umask() from a comment
      tweaks: remove an unneeded call of wnoutrefresh()
      tweaks: remove an unneeded cursor movement, and rename a variable
      tweaks: remove an unneeded element from the openfilestruct
      tweaks: remove a redundant cursor movement, remove a redundant condition
      tweaks: remove a superfluous check on the length of the key buffer
      tweaks: remove a superfluous global variable
      tweaks: remove some superfluous conditions
      tweaks: remove three unneeded while loops from two input routines
      tweaks: remove two calls of umask() by specifying permissions directly
      tweaks: remove two redundant conditions, and make a more direct return
      tweaks: remove two superfluous assignments
      tweaks: remove unneeded variables after the previous change
      tweaks: rename a function, and move it to before the one that calls it
      tweaks: rename a function, and move it to before the one that calls it
      tweaks: rename a function, to be more correct
      tweaks: rename a function, to be more general and clearer
      tweaks: rename a function, to be more precise, and reshuffle it
      tweaks: rename a function, to be more precise, and reshuffle some things
      tweaks: rename a function, to better describe what it does
      tweaks: rename a function, to leave the old names behind
      tweaks: rename a function, to match with the boolean that guards it
      tweaks: rename a function, to not shadow a variable, and elide parameter
      tweaks: rename a parameter and a variable, to be more meaningful
      tweaks: rename a struct element, to be shorter and preciser
      tweaks: rename a symbol, and actually use it where it is needed
      tweaks: rename a symbol, away from a double abbreviation
      tweaks: rename a symbol, from a phrase to a noun
      tweaks: rename a symbol, to be more accurate, and reshuffle two lines
      tweaks: rename a symbol, to better suit its purpose, and reduce its scope
      tweaks: rename a variable, and condense a comment
      tweaks: rename a variable, and normalize the indentation
      tweaks: rename a variable, and reduce the scope of two others
      tweaks: rename a variable, for more contrast with the function name
      tweaks: rename a variable, for shortness and contrast
      tweaks: rename a variable, improve a comment, and reshuffle a few things
      tweaks: rename a variable, to avoid overrepetition of 'backup'
      tweaks: rename a variable, to better describe what it holds
      tweaks: rename a variable, to better fit related ones
      tweaks: rename a variable, to make more sense
      tweaks: rename a variable, to not refer to a row as a "line"
      tweaks: rename one of the flag symbols, to be clearer
      tweaks: rename two functions and a variable, and improve two comments
      tweaks: rename two functions, and rename and reshuffle a parameter
      tweaks: rename two functions, to better indicate what they do
      tweaks: rename two header files, to be distinct and not an abbreviation
      tweaks: rename two labels, for brevity
      tweaks: rename two parameters, away from abbreviations
      tweaks: rename two parameters, away from an abbreviation
      tweaks: rename two parameters, to be more fitting
      tweaks: rename two variables, and reduce the scope of a third
      tweaks: rename two variables, away from abbreviations
      tweaks: rename two variables, to avoid a repetitive prefix
      tweaks: rename two variables, to be shorter and without abbreviations
      tweaks: reshuffle a bit of code, to elide an #ifndef
      tweaks: reshuffle a condition, for symmetry
      tweaks: reshuffle a condition, to avoid a repetition of code
      tweaks: reshuffle a condition, to make a little more sense
      tweaks: reshuffle a declaration and six calls of free(), to avoid a leak
      tweaks: reshuffle a few lines, and remove a few unneeded comments
      tweaks: reshuffle a few lines, for conciseness
      tweaks: reshuffle a few lines, to elide an 'if' from the most common path
      tweaks: reshuffle a fragment of code, to elide a 'goto'
      tweaks: reshuffle an assignment, for conciseness, and rename a variable
      tweaks: reshuffle and trim a comment, and remove unneeded pair of braces
      tweaks: reshuffle a statement, to have major initialization in nano.c
      tweaks: reshuffle some code, to avoid needlessly calling a function
      tweaks: reshuffle some conditions, to straighten the logic
      tweaks: reshuffle some lines, for esthetics
      tweaks: reshuffle some lines, to better separate the three cases
      tweaks: rewrap a few lines in old news items, for more balanced lines
      tweaks: separate a symbol from its definition by two spaces
      tweaks: shorten an error message, to be appropriate in all situations
      tweaks: shorten the name of a symbol, to match its bindable function
      tweaks: simplify an error message, by mentioning just the main point
      tweaks: simplify the counting of characters in a section
      tweaks: skip the conversion to multibyte for plain ASCII codes
      tweaks: slightly improve a comment and the ordering of some lines
      tweaks: slightly improve the grouping of shortcuts in some help texts
      tweaks: three escapes is the same as either zero escapes or one escape
      tweaks: trim an ASCII case, as the function is called only for UTF-8
      tweaks: trim some oververbose comments -- they overshadow the code
      tweaks: uniformize some old translator credits
      tweaks: update a translator hint, and add another
      tweaks: update three translator hints, add two, and frob three strings
      tweaks: use a better symbol than 'ERR' to signify a valid hex digit
      tweaks: use knowledge of Unicode to skip the general multibyte conversion
      tweaks: use three switches instead of cascading ifs, for brevity
      undo: choose the proper x positions to place the cursor and rejoin lines
      undo: when undoing a line cut, place the cursor back where it was
      usage: unabbreviate option arguments where possible
      verbatim: show an error message when an invalid Unicode code is entered
      verbatim: turn bracketed-paste mode off while waiting for input

Marco Diego Aurélio Mesquita (4):
      bindings: hard-bind the bookmark functions to M-Ins and M-PgUp/M-PgDn
      display: support the position indicator also when --softwrap is used
      files: make the M-F (New Buffer) toggle non-persistent
      new feature: bindable functions for toggling and jumping to "bookmarks"

Michalis Kokologiannakis (3):
      files: improve the backup procedure to ensure no data is lost
      tweaks: adjust some indentation after the previous change
      tweaks: move the backup code to a separate function

Pedro Victor de Brito Cordeiro (1):
      tweaks: make parameter names in prototypes match those in the definitions

Ryan Westlund (2):
      syntax: go: highlight the chan keyword, and the special +build comment
      syntax: haskell: new file -- coloring rules for Haskell programs


Changes between v4.8 and v4.9:
------------------------------

Benno Schulenberg (209):
      bindings: remove the translation of ^H to Backspace on the BSDs
      build: fix compilation for --enable-tiny --enable-justify
      build: restore non-UTF8 fallbacks, to allow compiling with --disable-utf8
      build: update the conditional placement of the "Go To Line" menu item
      bump version numbers and add a news item for the 4.9 release
      chars: optimize a function for the most common blanks: space and tab
      copyright: update to the current year for significantly changed files
      cutting: let M-T cut a trailing empty line, but not nothing at all
      cutting: with --cutfromcursor, allow ^K to cut the penultimate empty line
      display: do not show a "[" double-width placeholder when softwrapping
      display: keep the help items aligned, by not writing too many characters
      docs: improve the descriptions of --softwrap and 'set softwrap'
      docs: mark bracketed pasting as done in the TODO list
      docs: mention that ^[ (Esc) is unbindable, and explain why
      docs: remove the note saying that nanorc files must be in Unix format
      docs: trim some TODO items, and condense several others
      docs: update the form of an option, --suspendable / 'set suspendable'
      docs: update the missed occurrences of --suspendable / 'set suspendable'
      feedback: give a clearer message when trying to justify an empty region
      feedback: make sure that a later message can overwrite a short warning
      files: be consistent in which code means "New File"
      files: don't check uninitialized memory when writing new file  [valgrind]
      files: when piping, always pipe whatever was cut to the external command
      gnulib: update to its current upstream state
      help: do not break a line inside the 17-column keystrokes area
      help: increase the minimum help-text width from 32 to 40 columns
      input: accommodate silly emulators that have LF instead of CR in a paste
      input: after reallocating a string, do not write to its old address
      input: allocate sufficient bytes for entering a Unicode codepoint
      input: keep a multibyte character together during verbatim entry
      justify: do not copy too many bytes when trimming leading whitespace
      justify: do not crash when the user attempts to justify an empty region
      justify: do not take an empty line as template for first-line indentation
      justify: give the first line of a marked region its proper indentation
      justify: never break a line in leading whitespace
      justify: restore a region properly when it was marked backwards
      justify: skip over blanks after the region, to not skew the indentation
      justify: skip over in-line whitespace only, not over leading whitespace
      justify: trim prefixed whitespace when justifying a marked region
      justify: trim the leading blanks of a marked region at the right moment
      justify: when appropriate, move end point of marked region forward
      justify: when the cursor is at the left edge, keep it there
      locking: do not open an empty buffer when respecting the first lock file
      moving: do not put the cursor at end-of-line when in a help text
      options: rename --suspend to --suspendable, to make more sense
      prompt: insert a burst of bytes in one go instead of characterwise
      rcfile: allow alternate line endings in nanorc files
      rcfile: do not allow a regex for name, header, or magic to be empty
      rcfile: don't store a coloring rule before it is complete
      rcfile: rename bindable function 'suspendenable' to 'suspendable'
      rcfile: when a start= is not matched with an end=, abandon the whole rule
      rcfile: when finding a mistake, skip the rest of the line
      shutdown: don't refer to an open file when there aren't any
      softwrap: when typing goes beyond the bottom row, scroll just one row
      syntax: nanorc: colorize 'rawsequences', not the obsolete 'rebindkeypad'
      syntax: spec: add two missing % signs, and colorize also "%triggerprein"
      syntax: spec: colorize the date and author of changelog items differently
      syntax: spec: drop invalid parentheses after "Summary"
      tweaks: abort in three situations that should never occur
      tweaks: add a COUPLE_END undo item a bit later, instead of updating it
      tweaks: add a different helping variable
      tweaks: add a supporting variable, in order to condense some statements
      tweaks: add calls of die() for five theoretical programming mistakes
      tweaks: adjust some whitespace, reshuffle two ifs, and remove two braces
      tweaks: adjust the indentation after the previous change
      tweaks: always determine the second lead, to simplify the rewrap call
      tweaks: avoid a complaint about uninitialized memory  [valgrind]
      tweaks: call add_undo() before the character is actually added
      tweaks: change a function to return the name of the lock file on success
      tweaks: change a function with two possible results to boolean
      tweaks: change an integer to a short, and reshuffle it for better packing
      tweaks: change another function with two possible results to boolean
      tweaks: check for a starting quote in one place instead of three
      tweaks: combine two ifs into one
      tweaks: condense a comment, reshuffle conditions, and remove unwanted one
      tweaks: condense a fragment of code
      tweaks: condense two fragments of code
      tweaks: convert integers to bytes in one place instead of two
      tweaks: copy and store a deleted character in a conciser manner
      tweaks: correct a typo, improve two indentations, and rewrap a line
      tweaks: correct two typos in a changelog, and drop a doubled word
      tweaks: create an undo item earlier, and discard it when needed
      tweaks: don't bother reallocating the line data when undoing a line join
      tweaks: do some text alignments properly: with spaces, not tabs
      tweaks: drop a check for something that will not occur
      tweaks: drop two comments that contain variable names
      tweaks: elide a function call, by copying a byte directly
      tweaks: elide an intermediate copy of a character during injection, twice
      tweaks: elide an intermediate copy of an added character
      tweaks: elide a parameter, and rename a variable
      tweaks: elide a supporting variable, to make four loops slightly faster
      tweaks: elide a variable and an unneeded iteration
      tweaks: elide one variable and three gotos
      tweaks: elide three unneeded #defines
      tweaks: elide two variables and their two assignments
      tweaks: exclude a function when compiled without spell-checking support
      tweaks: extend the undo data for deleting and backspacing more directly
      tweaks: factor out a three-line condition into a separate function
      tweaks: frob a statement, rewrap two lines, and remove a pair of braces
      tweaks: frob two statements, condense another, and add a comment
      tweaks: highlight keystrokes in the documentation more consistently
      tweaks: improve four comments, and condense two fragments of code
      tweaks: improve three comments, and reshuffle two declarations
      tweaks: improve two comments
      tweaks: improve two comments, and remove an unneeded one
      tweaks: inject the entire burst of bytes at once into the edit buffer
      tweaks: instead of swapping the end points later, assign them correctly
      tweaks: invert the logic of a symbol, to make more sense
      tweaks: make prompt-bar input more similar to edit-buffer input
      tweaks: make two conditions more direct, and thus elide two functions
      tweaks: mesh two bits of code together
      tweaks: move a function to after the one that it calls
      tweaks: move a function to before the one that calls it
      tweaks: move a function to before the one that calls it
      tweaks: move a function to its proper place in the order of things
      tweaks: move a function to where it is used
      tweaks: move another function to where it is used
      tweaks: move some definitions closer to where they are used
      tweaks: move two functions to before the ones that call them
      tweaks: normalize a translator hint, update one, and add another
      tweaks: normalize the indentation after the previous change
      tweaks: normalize the indentation after the previous change
      tweaks: normalize the indentation after the previous two changes
      tweaks: pull the NUL-terminating of a string into a function
      tweaks: rearrange a case item, so that PASTE is always after CUT
      tweaks: rearrange some conditions, for compactness
      tweaks: relocate a function to before its callers
      tweaks: relocate eleven functions to before they are called
      tweaks: remove a now-unused helper function
      tweaks: remove an unneeded indirection
      tweaks: remove a redundant assignment
      tweaks: remove a redundant statement, a spurious reference to 'cutbottom'
      tweaks: remove a superfluous assignment, and reshuffle a call
      tweaks: remove non-UTF-8 code from three more functions
      tweaks: remove some redundant filtering, and thus elide a parameter
      tweaks: remove some unneeded braces, not used elsewhere either
      tweaks: remove two redundant case labels
      tweaks: remove two superfluous checks
      tweaks: remove two superfluous conditions
      tweaks: rename a constant, and rename and relocate a function
      tweaks: rename a function, and condense a few comments
      tweaks: rename a function, and split a variable into two separate ones
      tweaks: rename a function, to be more fitting, and improve some comments
      tweaks: rename a function, to remove an obscuring abbreviation
      tweaks: rename another function, to remove the obscuring abbreviation
      tweaks: rename a parameter and a variable, and reword two comments
      tweaks: rename a symbol, to match the corresponding renamed option
      tweaks: rename a variable, and add a helping one
      tweaks: rename a variable, and reshuffle a declaration
      tweaks: rename a variable, away from a single letter
      tweaks: rename a variable, away from a single letter
      tweaks: rename a variable, for aptness
      tweaks: rename a variable, reshuffle an assignment, and change a code
      tweaks: rename a variable, to be a bit clearer
      tweaks: rename a variable, to get out of the way of a later rename
      tweaks: rename a variable, to not be a substring of a function name
      tweaks: rename four more functions, to get rid of an abbreviation
      tweaks: rename four parameters, to be more distinct and telling
      tweaks: rename four variables, to be a bit more telling
      tweaks: rename to the same name two variables that have the same role
      tweaks: rename two elements of an undo record, to be more telling
      tweaks: rename two functions, for shortness
      tweaks: rename two functions, to match the style of others
      tweaks: rename two more elements of an undo record, for symmetry
      tweaks: rename two more functions, to match the style of others
      tweaks: rename two more variables, to harmonize with two others
      tweaks: rename two parameters, to not overlap with other names
      tweaks: rename two symbols, to be more precise
      tweaks: rename two variables, and frob four comments
      tweaks: rename two variables, and reshuffle a few things
      tweaks: rename two variables, for distinctiveness
      tweaks: rename two variables, to be different or for more contrast
      tweaks: rename two variables, to harmonize with two others
      tweaks: rename two variables, to suit both the marked and unmarked case
      tweaks: reorder a case item, to have SPLIT_BEGIN always before SPLIT_END
      tweaks: reshuffle a condition, for compacter code
      tweaks: reshuffle a condition, for compactness
      tweaks: reshuffle a few declarations and assignments
      tweaks: reshuffle an assignment and a free()
      tweaks: reshuffle some code, in preparation for improving it
      tweaks: reshuffle some stuff, to have related things together
      tweaks: reshuffle the setting of the starting point of a cut
      tweaks: reshuffle the trimming of leading whitespace, for compactness
      tweaks: reshuffle two declarations plus a fragment of code
      tweaks: simplify the undoing and redoing of an <Enter>
      tweaks: strip a parameter that is equivalent to 'openfile' for both calls
      tweaks: strip a parameter that is TRUE for both calls
      tweaks: swap the use of 'head' and 'tail' for CUT and PASTE undo items
      tweaks: trim an unnecessary detail from an error message
      tweaks: unabbreviate the name of a variable
      tweaks: unwrap four lines, and use explicit codes where possible
      tweaks: update several comments after the previous changes
      tweaks: update some comments after the previous changes
      tweaks: use a symbol instead of a number, and drop two unneeded casts
      tweaks: use spaces when aligning things, not tabs
      tweaks: use the variable that suits 'END' better
      tweaks: weld two fragments together, twice, by eliding an unneeded 'if'
      tweaks: when appropriate, move starting point of justified region back
      tweaks: when extending the marked region, include also exotic blanks
      tweaks: when undoing an addition or redoing a deletion, do not reallocate
      undo: do not mark the buffer as modified when pasting back nothing
      undo: do not try to copy a cutbuffer that is NULL
      undo: do not try to paste back an empty cutbuffer
      undo: for an automatic hard-wrap, store the correct previous buffer size
      undo: store the cursor row, for redoing filtering & justification better
      undo: treat a cut-until-end-of-buffer like a backward marked region
      undo: use the correct original fusion point when unjoining two lines
      undo: when undoing a paste or an insertion, remove an added magic line
      usage: improve the description of --softwrap

Neal Gompa (1):
      syntax: spec: add some keywords that were added in RPM 4.15 and 4.13

Saagar Jha (1):
      rcfile: fix an out-of-bounds read on empty lines


Changes between v4.7 and v4.8:
------------------------------

Benno Schulenberg (166):
      bindings: allow to bind shifted Meta+letter combinations with Sh-M-X
      bindings: allow to rebind also ^`, although it is synonymous with ^Space
      bindings: do not show the Full-Justify keystroke when in View mode
      bindings: force the first letter in a key name to uppercase
      build: exclude bracketed pasting from the tiny version
      build: exclude option '-g' when configured without browser and help
      build: exclude the escape sequences for F13...F16 from the tiny version
      build: fix compilation for --enable-{tiny,help,multibuffer}
      build: restrict the use of --with-slang to together with --enable-tiny
      bump version numbers and add a news item for the 4.8 release
      copyright: update the years for significantly changed files
      copyright: update the years for the FSF
      display: adjust line and column count upon a resize also when using Slang
      display: clear the help lines before a briefly shown warning
      display: don't let a message write over the second help line
      display: ensure the guiding stripe can be shown when not softwrapping
      display: exclude a bit of feedback from the tiny version
      display: show the cursor during suspension also when built with Slang
      display: skip zero-width characters on a Linux console, to avoid a mess
      docs: add a FAQ item about a self-compiled nano not reading /etc/nanorc
      docs: document the new -f/--rcfile option
      docs: document the new Sh-M-X format for binding <Shift+Meta+letter>
      docs: for the alternative bindings, rebind ^C only in the main menu
      docs: improve the description of which rc-files are read during startup
      docs: mention in the FAQ that auto-indentation is suppressed when pasting
      docs: mention that -D/--boldtext gets overridden by some nanorc options
      docs: put the three new behaviors in a bulleted list, to catch the eye
      docs: stop saying that 'set fill' enables hard-wrapping -- it does not
      docs: use more generally available arrows in the cheatsheet
      feedback: ask a clearer question when a valid lock file is encountered
      feedback: report Ctrl+Alt keystrokes as unbindable
      feedback: restore a message that can occur in help viewer or file browser
      files: alert the user afterward when an overwritten file is being edited
      files: revert the previous commit, as the extra warning is annoying
      files: warn doubly when the user is about to overwrite an existing file
      files: write a lock file also for a new file and when the name changed
      gnulib: update to its current upstream state
      help: don't waste the last column in the help viewer on narrow terminals
      help: increase the minimum help-text width from 24 to 32 columns
      help: prevent double spaces from protruding across the right edge
      help: when a key description wraps, indent its wrapped part
      input: consume and ignore the raw escape sequences for F17 to F24
      input: correct the escape sequence for PageUp/PageDown on Eterm/Urxvt
      input: Ctrl+arrow is "Esc O x" on Eterm, as on rxvt -- not "Esc o x"
      input: discard partial sequences that Slang produces for F17 to F24
      input: do not auto-indent when something is pasted into nano from outside
      input: don't discard the first keystroke after a resize when using Slang
      input: filter out Ctrl+Meta keystrokes, as they can never be shortcuts
      input: ignore bracketed pastes in help viewer and file browser
      input: ignore modifiers on a VT while executing a macro or a string bind
      input: prevent unintentional marking of text for shifted Meta keystrokes
      input: read in an external paste in one go, to allow undoing with one M-U
      input: recognize the raw escape sequences for F13 to F16 on xterm too
      locking: accept a minimal amount of data, enough for PID plus username
      locking: avoid crashing when there is a problem writing the lock file
      locking: check two magic bytes, to verify that it is a lock file
      locking: do not write a lock file when in view mode
      locking: when a lock file is unreadable, open the file itself anyway
      locking: when finding a lock file at startup, quit when user cancels
      new feature: allow specifying a custom nanorc file on the command line
      pasting: retain the mark's position when it was set at the cursor
      prompt: for a Yes-No-All, accept the first character of an external paste
      rcfile: do set the meta flag for plain <Meta+ASCII> combinations
      rcfile: require "bright", "start=", and "end=" to be in lowercase too
      rcfile: unbind keys by their key code instead of by their key string
      softwrap: suppress the guiding stripe on unaffected chunks
      speller: avoid messing up the screen when an unknown locale is used
      suspension: put in an extra terminal-initialization call for Slang
      syntax: nanohelp, nanorc: colorize the Sh-M-X format as a valid key name
      syntax: nanorc: colorize all-lowercase Meta key binds as valid too
      tweaks: add a little change that was overlooked in the previous commit
      tweaks: add an error message for something that should never occur
      tweaks: adjust or reword a few items in the FAQ
      tweaks: adjust the indentation after the previous change
      tweaks: allocate the lock data only when ready to write them
      tweaks: avoid analyzing the key string when the target key code is known
      tweaks: avoid determining the key code from the key string twice
      tweaks: avoid fiddling with the keybuffer when it's not needed
      tweaks: comment fully, so that all handled escape sequences are findable
      tweaks: condense a fragment of code
      tweaks: condense five more fragments of repetitious code
      tweaks: condense three comments to one, and do the masking more directly
      tweaks: condense three fragments of repetitious code
      tweaks: condense two comments, and reshuffle an #endif
      tweaks: correct a comment
      tweaks: correct a couple of comments about escape sequences
      tweaks: correct the description of what nano writes into the lock file
      tweaks: delete some fragments of code that have become irrelevant
      tweaks: do not leak a file descriptor when fdopen() fails
      tweaks: don't bother including Haiku escape sequences in the tiny version
      tweaks: don't enable bracketed pasting when not handling such pastes
      tweaks: drop a message that will never be seen
      tweaks: drop an unneeded call of keypad() -- we never read from topwin
      tweaks: drop a pointless suffix from two function names
      tweaks: elide a function that has become too small for its two calls
      tweaks: elide a helper function, in preparation for an improvement
      tweaks: elide an 'if', by moving the relevant code to a better place
      tweaks: elide a small function, as it's in fact needed just once
      tweaks: elide a somewhat costly call by remembering some state
      tweaks: elide a variable, and rename its sister
      tweaks: elide three checks of a shortcut's meta flag
      tweaks: ensure that editor name and user name are NUL terminated
      tweaks: exclude an unneeded fragment of code from the tiny version
      tweaks: exclude two unneeded fragments of code from the tiny version
      tweaks: free two strings as soon as they are no longer needed
      tweaks: frob a couple of indentations and white lines
      tweaks: fuse two nearly identical functions into a single one
      tweaks: gather four calls that are always done together into a function
      tweaks: harmonize the amount of lock data that we read and write
      tweaks: improve a comment by indirectly referring to the ncurses docs
      tweaks: in comments, reword "titlebar" and "statusbar" to two words each
      tweaks: initialize three booleans straightaway, when they are declared
      tweaks: initialize three more booleans straightaway, at declaration
      tweaks: judge from the key code itself whether it is a Meta keystroke
      tweaks: make a couple of comments more precise
      tweaks: move a function to after the one that it calls
      tweaks: move a function to be before the ones that call it
      tweaks: move a function to before the one that calls it
      tweaks: move a function to related ones, and after one that it calls
      tweaks: move a function to right before the one that calls it
      tweaks: move another function to after the one that it calls
      tweaks: move another function to before the one that calls it
      tweaks: move another function, to group the deleting ones together
      tweaks: move three functions to the file where they are mainly used
      tweaks: rearrange a few global variables, to group things better
      tweaks: recompute the wrapping point just once
      tweaks: reduce the scope of a variable, and reshuffle a declaration
      tweaks: reduce the scope of two constants and of four variables
      tweaks: reformat a comment, and resuffle a line to match byte order
      tweaks: remove a feedback message that is never shown
      tweaks: remove a redundant call, as there is nothing to free there
      tweaks: remove a superfluous check
      tweaks: remove some superfluous conditions for rewriting a lock file
      tweaks: remove the now-unneeded code related to bracketed pasting
      tweaks: remove the now-unused meta flag from 'keystruct'
      tweaks: remove two superfluous assignments, and rename a variable
      tweaks: rename a function and its parameter, to be more fitting
      tweaks: rename a function, to be a bit more expressive
      tweaks: rename a function, to make it not contain the name of another
      tweaks: rename a parameter and invert its logic, and correct a comment
      tweaks: rename five variables, away from a single letter
      tweaks: rename two functions, to make more sense
      tweaks: rename two parameters, to be more general and to sound shorter
      tweaks: rename two variables, to make more sense
      tweaks: renumber some FAQ items in preparation for adding another
      tweaks: reorder two symbols
      tweaks: reshuffle some assignments for a return value
      tweaks: reshuffle some declarations
      tweaks: reshuffle some declarations, and expand a few variable names
      tweaks: reshuffle some lines, to avoid tallying the menus when not needed
      tweaks: reshuffle some lines, to group all ignored keystrokes together
      tweaks: reshuffle three lines, to make the grouping tighther
      tweaks: reshuffle two lines, to do the linking first, then the content
      tweaks: reword two comments, and rewrap another
      tweaks: rewrap a comment and a line, and reshuffle a fragment of code
      tweaks: rewrap two lines, for consistency with similar lines
      tweaks: rewrite the same file name into the lock file as the first time
      tweaks: slightly condense a function by conflating case
      tweaks: stop recognizing escape sequences for a key without meaning
      tweaks: suggest a few more alternative key bindings and unbindings
      tweaks: take just one shot at reading the lock file, and correct a type
      tweaks: trim some excessive error checking and key-name frobbing
      tweaks: tumble three conditions, for consistency in comparisons
      tweaks: unabbreviate "argument" in the documentation
      tweaks: use a simple subtraction instead of a function call
      usage: improve the description of --restricted and --quickblank

Brand Huntsman (2):
      input: beep when invalid key is pressed at yesno prompt or in linter menu
      input: recognize the start and stop sequences of a bracketed paste


Changes between v4.6 and v4.7:
------------------------------

Benno Schulenberg (39):
      build: add the uploading of PDF and cheatsheet to the release script
      build: avoid three compiler warnings when using gcc-9.2 or newer
      build: fix compilation for --enable-tiny --enable-wrapping
      build: fix compilation on macOS, where 'st_mtim' is unknown
      build: fix compilation when configured with --disable-justify
      bump version numbers and add a news item for the 4.7 release
      display: don't color the space that separates line numbers from text
      docs: add or improve the 'description' meta tag in the two HTML pages
      docs: add the 'lang' attribute in the right place to the two HTML pages
      docs: mention that all keywords in a nanorc file should be in lowercase
      docs: mention that a negative number after "+" counts from the end
      gnulib: update to its current upstream state
      input: make <Tab> indent only when mark and cursor are on different lines
      justify: distinguish between tabs and spaces when comparing indentation
      justify: treat consecutive indentations that look the same as the same
      linter: beep when trying to go beyond first or last message
      rcfile: accept also function names and menu names only in lowercase
      rcfile: accept only keywords in all lowercase, for speed of comparison
      rcfile: demand that function 'exit' is bound in the file browser
      syntax: nanohelp: colorize also ^/ as a possible keystroke
      syntax: sh: recognize shell rc files also in dedicated directories
      tweaks: avoid using strlen() where it is not needed
      tweaks: drop M-Space and ^Space from the browser's key list
      tweaks: improve two comments and the ordering of some operands
      tweaks: move three functions to the file where they are used
      tweaks: optimize the trimming of trailing whitespace
      tweaks: remove a stray space
      tweaks: rename a function, to get out of the way for another rename
      tweaks: rename a function, to get rid of a useless suffix
      tweaks: reshuffle a few lines, for brevity or speed or consistency
      tweaks: reshuffle a few lines, for symmetry with the preceding function
      tweaks: reshuffle a fragment of code, for efficiency
      tweaks: reshuffle and rename a few things, to elide duplication
      tweaks: reshuffle an item, to avoid a lone 'else'
      tweaks: reshuffle two declarations, for compactness
      tweaks: slightly streamline the search for a possible wrapping point
      tweaks: trim or adjust some whitespace in HTML, and add two keywords
      tweaks: unwrap a few lines, and move some strings to among their peers
      wrapping: never break in the quoting part nor in the indentation part


Changes between v4.5 and v4.6:
------------------------------

Benno Schulenberg (128):
      bindings: allow to rebind ^/, even though it is synonymous with ^_
      bindings: don't hard-bind ^H in the help viewer or the file browser
      bindings: the 'all' keyword should encompass the browser menu too
      bindings: the 'all' keyword should include the browser menu always
      build: fix compilation for --enable-tiny --enable-histories
      build: fix compilation when configured with --disable-color
      build: slightly speed up the compilation of the tiny version
      bump version numbers and add a news item for the 4.6 release
      chars: add a faster version of the character-parsing function
      commands: rename 'fixer' to 'formatter', to be less misleading
      cutting: do nothing when trying to chop a word leftward at start of file
      display: do refresh the edit window when exiting from the help viewer
      docs: add a note saying that rebinding ^M or ^I is not advisable
      docs: add the M-F and M-N keystrokes to the cheatsheet
      docs: adjust the compilation instructions to two-digit version numbers
      docs: correct the description of the 'spell' menu
      docs: document the 'fixer' command, a per-syntax content arranger
      docs: mention that color rules are applied in the order they are listed
      docs: mention that 'hunspell' is now the first default spelling program
      docs: mention that the 'nopauses' option is obsolete
      docs: remove some excessive detail from the sample nanorc file
      docs: remove the note about the formatter having been removed
      feedback: say it when spell check or manipulation did not change anything
      files: distinguish between read error and write error when prepending
      files: don't mention the name of the temp file when reading goes wrong
      files: when opening a file for copying, it should NOT be created
      formatter: accept the formatted result also upon a nonzero exit status
      formatter: don't let output from the program pollute the screen
      gnulib: update to its current upstream state
      history: don't wait when there is something wrong with the history files
      linter: report it as an error when running the linting program fails
      rcfile: allow binding also F17...F24
      rcfile: process extensions to file-matching commands straightaway
      restored feature: a per-syntax 'fixer' command that processes the buffer
      softwrap: when switching to another buffer, re-align the starting column
      speller: prefer 'hunspell' over 'spell', because it can handle UTF-8
      speller: when 'spell' is not found, try running 'hunspell -l' instead
      statusbar: show only the first error message, with dots to indicate more
      syntax: c: recognize some C++ header files by their Emacs modeline
      syntax: default: don't colorize stuff between two pairs of brackets
      syntax: html: add a formatter command, making use of 'tidy'
      syntax: html: colorize only full attributes, and colorize strings later
      syntax: javascript: colorize also special values 'null' and 'undefined'
      syntax: javascript: colorize the boolean values 'true' and 'false' too
      syntax: nanorc: colorize all arguments of 'fixer' and 'linter' as valid
      syntax: nanorc: colorize in bright red everything that is invalid
      syntax: nanorc: colorize only lowercase keywords as valid
      syntax: nanorc: colorize the 'fixer' command as valid
      syntax: ruby: colorize also lowercase global/instance variables
      syntaxes: put the 'linter' and 'formatter' commands on a separate line
      tweaks: add a helper function without the ubiquitous NULL argument
      tweaks: add a local variable, for clarity, to not preuse another one
