less: add less v.418 help text doc. No code changes.

1 files changed, 209 insertions, 2 deletions

diff --git a/miscutils/less.c b/miscutils/less.c
index c66788007..1af9685bf 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -1488,7 +1488,7 @@ static void keypress_process(int keypress)
                 colon_process();
                 break;
 #if ENABLE_FEATURE_LESS_REWRAP
-        case '*':
+        case '*': /* Should be -N command / option */
                 option_mask32 ^= FLAG_N;
                 get_terminal_width_height(kbd_fd, &width, &max_displayed_line);
                 if (width < 20) /* 20: two tabstops + 4 */
@@ -1501,7 +1501,7 @@ static void keypress_process(int keypress)
                 re_wrap();
                 buffer_fill_and_print();
                 break;
-        case '&':
+        case '&': /* Should be -S command / option */
                 option_mask32 ^= LESS_STATE_NO_WRAP;
                 buffer_fill_and_print();
                 break;
@@ -1578,3 +1578,210 @@ int less_main(int argc, char **argv)
                 keypress_process(keypress);
         }
 }
+
+/*
+Help text of less version 418 is below.
+If you are implementing something, keeping
+key and/or command line switch compatibility is a good idea:
+
+
+                   SUMMARY OF LESS COMMANDS
+
+      Commands marked with * may be preceded by a number, N.
+      Notes in parentheses indicate the behavior if N is given.
+  h  H                 Display this help.
+  q  :q  Q  :Q  ZZ     Exit.
+ ---------------------------------------------------------------------------
+                           MOVING
+  e  ^E  j  ^N  CR  *  Forward  one line   (or N lines).
+  y  ^Y  k  ^K  ^P  *  Backward one line   (or N lines).
+  f  ^F  ^V  SPACE  *  Forward  one window (or N lines).
+  b  ^B  ESC-v      *  Backward one window (or N lines).
+  z                 *  Forward  one window (and set window to N).
+  w                 *  Backward one window (and set window to N).
+  ESC-SPACE         *  Forward  one window, but don't stop at end-of-file.
+  d  ^D             *  Forward  one half-window (and set half-window to N).
+  u  ^U             *  Backward one half-window (and set half-window to N).
+  ESC-)  RightArrow *  Left  one half screen width (or N positions).
+  ESC-(  LeftArrow  *  Right one half screen width (or N positions).
+  F                    Forward forever; like "tail -f".
+  r  ^R  ^L            Repaint screen.
+  R                    Repaint screen, discarding buffered input.
+        ---------------------------------------------------
+        Default "window" is the screen height.
+        Default "half-window" is half of the screen height.
+ ---------------------------------------------------------------------------
+                          SEARCHING
+  /pattern          *  Search forward for (N-th) matching line.
+  ?pattern          *  Search backward for (N-th) matching line.
+  n                 *  Repeat previous search (for N-th occurrence).
+  N                 *  Repeat previous search in reverse direction.
+  ESC-n             *  Repeat previous search, spanning files.
+  ESC-N             *  Repeat previous search, reverse dir. & spanning files.
+  ESC-u                Undo (toggle) search highlighting.
+        ---------------------------------------------------
+        Search patterns may be modified by one or more of:
+        ^N or !  Search for NON-matching lines.
+        ^E or *  Search multiple files (pass thru END OF FILE).
+        ^F or @  Start search at FIRST file (for /) or last file (for ?).
+        ^K       Highlight matches, but don't move (KEEP position).
+        ^R       Don't use REGULAR EXPRESSIONS.
+ ---------------------------------------------------------------------------
+                           JUMPING
+  g  <  ESC-<       *  Go to first line in file (or line N).
+  G  >  ESC->       *  Go to last line in file (or line N).
+  p  %              *  Go to beginning of file (or N percent into file).
+  t                 *  Go to the (N-th) next tag.
+  T                 *  Go to the (N-th) previous tag.
+  {  (  [           *  Find close bracket } ) ].
+  }  )  ]           *  Find open bracket { ( [.
+  ESC-^F <c1> <c2>  *  Find close bracket <c2>.
+  ESC-^B <c1> <c2>  *  Find open bracket <c1>
+        ---------------------------------------------------
+        Each "find close bracket" command goes forward to the close bracket
+          matching the (N-th) open bracket in the top line.
+        Each "find open bracket" command goes backward to the open bracket
+          matching the (N-th) close bracket in the bottom line.
+  m<letter>            Mark the current position with <letter>.
+  '<letter>            Go to a previously marked position.
+  ''                   Go to the previous position.
+  ^X^X                 Same as '.
+        ---------------------------------------------------
+        A mark is any upper-case or lower-case letter.
+        Certain marks are predefined:
+             ^  means  beginning of the file
+             $  means  end of the file
+ ---------------------------------------------------------------------------
+                        CHANGING FILES
+  :e [file]            Examine a new file.
+  ^X^V                 Same as :e.
+  :n                *  Examine the (N-th) next file from the command line.
+  :p                *  Examine the (N-th) previous file from the command line.
+  :x                *  Examine the first (or N-th) file from the command line.
+  :d                   Delete the current file from the command line list.
+  =  ^G  :f            Print current file name.
+ ---------------------------------------------------------------------------
+                    MISCELLANEOUS COMMANDS
+  -<flag>              Toggle a command line option [see OPTIONS below].
+  --<name>             Toggle a command line option, by name.
+  _<flag>              Display the setting of a command line option.
+  __<name>             Display the setting of an option, by name.
+  +cmd                 Execute the less cmd each time a new file is examined.
+  !command             Execute the shell command with $SHELL.
+  |Xcommand            Pipe file between current pos & mark X to shell command.
+  v                    Edit the current file with $VISUAL or $EDITOR.
+  V                    Print version number of "less".
+ ---------------------------------------------------------------------------
+                           OPTIONS
+        Most options may be changed either on the command line,
+        or from within less by using the - or -- command.
+        Options may be given in one of two forms: either a single
+        character preceded by a -, or a name preceeded by --.
+  -?  ........  --help
+                  Display help (from command line).
+  -a  ........  --search-skip-screen
+                  Forward search skips current screen.
+  -b [N]  ....  --buffers=[N]
+                  Number of buffers.
+  -B  ........  --auto-buffers
+                  Don't automatically allocate buffers for pipes.
+  -c  ........  --clear-screen
+                  Repaint by clearing rather than scrolling.
+  -d  ........  --dumb
+                  Dumb terminal.
+  -D [xn.n]  .  --color=xn.n
+                  Set screen colors. (MS-DOS only)
+  -e  -E  ....  --quit-at-eof  --QUIT-AT-EOF
+                  Quit at end of file.
+  -f  ........  --force
+                  Force open non-regular files.
+  -F  ........  --quit-if-one-screen
+                  Quit if entire file fits on first screen.
+  -g  ........  --hilite-search
+                  Highlight only last match for searches.
+  -G  ........  --HILITE-SEARCH
+                  Don't highlight any matches for searches.
+  -h [N]  ....  --max-back-scroll=[N]
+                  Backward scroll limit.
+  -i  ........  --ignore-case
+                  Ignore case in searches that do not contain uppercase.
+  -I  ........  --IGNORE-CASE
+                  Ignore case in all searches.
+  -j [N]  ....  --jump-target=[N]
+                  Screen position of target lines.
+  -J  ........  --status-column
+                  Display a status column at left edge of screen.
+  -k [file]  .  --lesskey-file=[file]
+                  Use a lesskey file.
+  -L  ........  --no-lessopen
+                  Ignore the LESSOPEN environment variable.
+  -m  -M  ....  --long-prompt  --LONG-PROMPT
+                  Set prompt style.
+  -n  -N  ....  --line-numbers  --LINE-NUMBERS
+                  Don't use line numbers.
+  -o [file]  .  --log-file=[file]
+                  Copy to log file (standard input only).
+  -O [file]  .  --LOG-FILE=[file]
+                  Copy to log file (unconditionally overwrite).
+  -p [pattern]  --pattern=[pattern]
+                  Start at pattern (from command line).
+  -P [prompt]   --prompt=[prompt]
+                  Define new prompt.
+  -q  -Q  ....  --quiet  --QUIET  --silent --SILENT
+                  Quiet the terminal bell.
+  -r  -R  ....  --raw-control-chars  --RAW-CONTROL-CHARS
+                  Output "raw" control characters.
+  -s  ........  --squeeze-blank-lines
+                  Squeeze multiple blank lines.
+  -S  ........  --chop-long-lines
+                  Chop long lines.
+  -t [tag]  ..  --tag=[tag]
+                  Find a tag.
+  -T [tagsfile] --tag-file=[tagsfile]
+                  Use an alternate tags file.
+  -u  -U  ....  --underline-special  --UNDERLINE-SPECIAL
+                  Change handling of backspaces.
+  -V  ........  --version
+                  Display the version number of "less".
+  -w  ........  --hilite-unread
+                  Highlight first new line after forward-screen.
+  -W  ........  --HILITE-UNREAD
+                  Highlight first new line after any forward movement.
+  -x [N[,...]]  --tabs=[N[,...]]
+                  Set tab stops.
+  -X  ........  --no-init
+                  Don't use termcap init/deinit strings.
+                --no-keypad
+                  Don't use termcap keypad init/deinit strings.
+  -y [N]  ....  --max-forw-scroll=[N]
+                  Forward scroll limit.
+  -z [N]  ....  --window=[N]
+                  Set size of window.
+  -" [c[c]]  .  --quotes=[c[c]]
+                  Set shell quote characters.
+  -~  ........  --tilde
+                  Don't display tildes after end of file.
+  -# [N]  ....  --shift=[N]
+                  Horizontal scroll amount (0 = one half screen width)
+
+ ---------------------------------------------------------------------------
+                          LINE EDITING
+        These keys can be used to edit text being entered
+        on the "command line" at the bottom of the screen.
+ RightArrow                       ESC-l     Move cursor right one character.
+ LeftArrow                        ESC-h     Move cursor left one character.
+ CNTL-RightArrow  ESC-RightArrow  ESC-w     Move cursor right one word.
+ CNTL-LeftArrow   ESC-LeftArrow   ESC-b     Move cursor left one word.
+ HOME                             ESC-0     Move cursor to start of line.
+ END                              ESC-$     Move cursor to end of line.
+ BACKSPACE                                  Delete char to left of cursor.
+ DELETE                           ESC-x     Delete char under cursor.
+ CNTL-BACKSPACE   ESC-BACKSPACE             Delete word to left of cursor.
+ CNTL-DELETE      ESC-DELETE      ESC-X     Delete word under cursor.
+ CNTL-U           ESC (MS-DOS only)         Delete entire line.
+ UpArrow                          ESC-k     Retrieve previous command line.
+ DownArrow                        ESC-j     Retrieve next command line.
+ TAB                                        Complete filename & cycle.
+ SHIFT-TAB                        ESC-TAB   Complete filename & reverse cycle.
+ CNTL-L                                     Complete filename, list all.
+*/