Vendor import of less v429vendor/less/v429

1 files changed, 436 insertions, 443 deletions

diff --git a/less.man b/less.man
index af19a477fac2..1135830eb3a8 100644
--- a/less.man
+++ b/less.man
@@ -195,8 +195,8 @@ LESS(1)                                                                LESS(1)
                      options.
 
               ^K     Highlight any text which matches the pattern on the  cur-
-                     rent  screen,  but  don't  move  to the first match (KEEP
-                     current position).
+                     rent screen, but don't move to the first match (KEEP cur-
+                     rent position).
 
               ^R     Don't interpret regular expression  metacharacters;  that
                      is, do a simple textual comparison.
@@ -257,95 +257,111 @@ LESS(1)                                                                LESS(1)
               (Highlighting can also be disabled by toggling the -G option; in
               that case search commands do not turn highlighting back on.)
 
+       &pattern
+              Display  only  lines which match the pattern; lines which do not
+              match the pattern are not displayed.  If pattern  is  empty  (if
+              you  type  &  immediately  followed  by ENTER), any filtering is
+              turned off, and all lines are displayed.  While filtering is  in
+              effect,  an  ampersand  is  displayed  at  the  beginning of the
+              prompt, as a reminder that some lines in the file may be hidden.
+
+              Certain characters are special as in the / command:
+
+              ^N or !
+                     Display only lines which do NOT match the pattern.
+
+              ^R     Don't  interpret  regular expression metacharacters; that
+                     is, do a simple textual comparison.
+
        :e [filename]
-              Examine  a  new file.  If the filename is missing, the "current"
-              file (see the :n and :p commands below) from the list  of  files
-              in  the  command line is re-examined.  A percent sign (%) in the
-              filename is replaced by the name of the current file.   A  pound
-              sign  (#)  is  replaced  by  the name of the previously examined
-              file.   However,  two  consecutive  percent  signs  are   simply
+              Examine a new file.  If the filename is missing,  the  "current"
+              file  (see  the :n and :p commands below) from the list of files
+              in the command line is re-examined.  A percent sign (%)  in  the
+              filename  is  replaced by the name of the current file.  A pound
+              sign (#) is replaced by the  name  of  the  previously  examined
+              file.    However,  two  consecutive  percent  signs  are  simply
               replaced with a single percent sign.  This allows you to enter a
-              filename that contains a percent sign in the  name.   Similarly,
-              two  consecutive  pound  signs  are replaced with a single pound
-              sign.  The filename is inserted into the command  line  list  of
-              files  so  that it can be seen by subsequent :n and :p commands.
+              filename  that  contains a percent sign in the name.  Similarly,
+              two consecutive pound signs are replaced  with  a  single  pound
+              sign.   The  filename  is inserted into the command line list of
+              files so that it can be seen by subsequent :n and  :p  commands.
               If the filename consists of several files, they are all inserted
-              into  the  list  of files and the first one is examined.  If the
+              into the list of files and the first one is  examined.   If  the
               filename contains one or more spaces, the entire filename should
               be enclosed in double quotes (also see the -" option).
 
        ^X^V or E
-              Same  as :e.  Warning: some systems use ^V as a special literal-
-              ization character.  On such systems, you may not be able to  use
+              Same as :e.  Warning: some systems use ^V as a special  literal-
+              ization  character.  On such systems, you may not be able to use
               ^V.
 
-       :n     Examine  the next file (from the list of files given in the com-
-              mand line).  If a number N is specified, the N-th next  file  is
+       :n     Examine the next file (from the list of files given in the  com-
+              mand  line).   If a number N is specified, the N-th next file is
               examined.
 
        :p     Examine the previous file in the command line list.  If a number
               N is specified, the N-th previous file is examined.
 
-       :x     Examine the first file in the command line list.  If a number  N
+       :x     Examine  the first file in the command line list.  If a number N
               is specified, the N-th file in the list is examined.
 
        :d     Remove the current file from the list of files.
 
-       t      Go  to the next tag, if there were more than one matches for the
+       t      Go to the next tag, if there were more than one matches for  the
               current tag.  See the -t option for more details about tags.
 
-       T      Go to the previous tag, if there were more than one matches  for
+       T      Go  to the previous tag, if there were more than one matches for
               the current tag.
 
        = or ^G or :f
-              Prints  some  information about the file being viewed, including
-              its name and the line number and byte offset of the bottom  line
-              being  displayed.  If possible, it also prints the length of the
-              file, the number of lines in the file and  the  percent  of  the
+              Prints some information about the file being  viewed,  including
+              its  name and the line number and byte offset of the bottom line
+              being displayed.  If possible, it also prints the length of  the
+              file,  the  number  of  lines in the file and the percent of the
               file above the last displayed line.
 
-       -      Followed  by one of the command line option letters (see OPTIONS
-              below), this will change the setting of that option and print  a
-              message  describing  the  new  setting.   If a ^P (CONTROL-P) is
+       -      Followed by one of the command line option letters (see  OPTIONS
+              below),  this will change the setting of that option and print a
+              message describing the new setting.   If  a  ^P  (CONTROL-P)  is
               entered immediately after the dash, the setting of the option is
-              changed  but  no message is printed.  If the option letter has a
-              numeric value (such as -b or -h), or a string value (such as  -P
-              or  -t), a new value may be entered after the option letter.  If
-              no new value is entered, a message describing the  current  set-
+              changed but no message is printed.  If the option letter  has  a
+              numeric  value (such as -b or -h), or a string value (such as -P
+              or -t), a new value may be entered after the option letter.   If
+              no  new  value is entered, a message describing the current set-
               ting is printed and nothing is changed.
 
-       --     Like  the  -  command, but takes a long option name (see OPTIONS
-              below) rather than a  single  option  letter.   You  must  press
+       --     Like the - command, but takes a long option  name  (see  OPTIONS
+              below)  rather  than  a  single  option  letter.  You must press
               RETURN after typing the option name.  A ^P immediately after the
-              second dash suppresses printing of a message describing the  new
+              second  dash suppresses printing of a message describing the new
               setting, as in the - command.
 
-       -+     Followed  by  one  of  the command line option letters this will
-              reset the option to its default  setting  and  print  a  message
-              describing  the  new  setting.  (The "-+X" command does the same
-              thing as "-+X" on the command line.)  This  does  not  work  for
+       -+     Followed by one of the command line  option  letters  this  will
+              reset  the  option  to  its  default setting and print a message
+              describing the new setting.  (The "-+X" command  does  the  same
+              thing  as  "-+X"  on  the command line.)  This does not work for
               string-valued options.
 
-       --+    Like  the -+ command, but takes a long option name rather than a
+       --+    Like the -+ command, but takes a long option name rather than  a
               single option letter.
 
-       -!     Followed by one of the command line option  letters,  this  will
-              reset  the  option  to the "opposite" of its default setting and
-              print a message describing the new setting.  This does not  work
+       -!     Followed  by  one  of the command line option letters, this will
+              reset the option to the "opposite" of its  default  setting  and
+              print  a message describing the new setting.  This does not work
               for numeric or string-valued options.
 
-       --!    Like  the -! command, but takes a long option name rather than a
+       --!    Like the -! command, but takes a long option name rather than  a
               single option letter.
 
-       _      (Underscore.)  Followed by one of the command line  option  let-
-              ters,  this  will print a message describing the current setting
+       _      (Underscore.)   Followed  by one of the command line option let-
+              ters, this will print a message describing the  current  setting
               of that option.  The setting of the option is not changed.
 
        __     (Double underscore.)  Like the _ (underscore) command, but takes
               a long option name rather than a single option letter.  You must
               press RETURN after typing the option name.
 
-       +cmd   Causes the specified cmd to be executed each time a new file  is
+       +cmd   Causes  the specified cmd to be executed each time a new file is
               examined.  For example, +G causes less to initially display each
               file starting at the end rather than the beginning.
 
@@ -354,51 +370,51 @@ LESS(1)                                                                LESS(1)
        q or Q or :q or :Q or ZZ
               Exits less.
 
-       The following four commands may or may not be valid, depending on  your
+       The  following four commands may or may not be valid, depending on your
        particular installation.
 
 
-       v      Invokes  an  editor  to edit the current file being viewed.  The
+       v      Invokes an editor to edit the current file  being  viewed.   The
               editor is taken from the environment variable VISUAL if defined,
-              or  EDITOR if VISUAL is not defined, or defaults to "vi" if nei-
-              ther VISUAL nor EDITOR is defined.  See also the  discussion  of
+              or EDITOR if VISUAL is not defined, or defaults to "vi" if  nei-
+              ther  VISUAL  nor EDITOR is defined.  See also the discussion of
               LESSEDIT under the section on PROMPTS below.
 
        ! shell-command
-              Invokes  a shell to run the shell-command given.  A percent sign
-              (%) in the command is replaced by the name of the current  file.
+              Invokes a shell to run the shell-command given.  A percent  sign
+              (%)  in the command is replaced by the name of the current file.
               A pound sign (#) is replaced by the name of the previously exam-
-              ined file.  "!!" repeats the last shell command.   "!"  with  no
-              shell  command  simply  invokes  a  shell.  On Unix systems, the
-              shell is taken from the environment variable SHELL, or  defaults
-              to  "sh".   On  MS-DOS and OS/2 systems, the shell is the normal
+              ined  file.   "!!"  repeats the last shell command.  "!" with no
+              shell command simply invokes a  shell.   On  Unix  systems,  the
+              shell  is taken from the environment variable SHELL, or defaults
+              to "sh".  On MS-DOS and OS/2 systems, the shell  is  the  normal
               command processor.
 
        | <m> shell-command
-              <m> represents any mark letter.  Pipes a section  of  the  input
-              file  to the given shell command.  The section of the file to be
-              piped is between the first line on the current  screen  and  the
-              position  marked by the letter.  <m> may also be ^ or $ to indi-
+              <m>  represents  any  mark letter.  Pipes a section of the input
+              file to the given shell command.  The section of the file to  be
+              piped  is  between  the first line on the current screen and the
+              position marked by the letter.  <m> may also be ^ or $ to  indi-
               cate beginning or end of file respectively.  If <m> is . or new-
               line, the current screen is piped.
 
        s filename
-              Save  the  input  to  a file.  This only works if the input is a
+              Save the input to a file.  This only works if  the  input  is  a
               pipe, not an ordinary file.
 
 
 OPTIONS
-       Command line options are described below.  Most options may be  changed
+       Command  line options are described below.  Most options may be changed
        while less is running, via the "-" command.
 
-       Most  options  may be given in one of two forms: either a dash followed
-       by a single letter, or two dashes followed by a long  option  name.   A
-       long  option  name  may  be  abbreviated as long as the abbreviation is
+       Most options may be given in one of two forms: either a  dash  followed
+       by  a  single  letter, or two dashes followed by a long option name.  A
+       long option name may be abbreviated as  long  as  the  abbreviation  is
        unambiguous.  For example, --quit-at-eof may be abbreviated --quit, but
        not --qui, since both --quit-at-eof and --quiet begin with --qui.  Some
-       long option names are in uppercase, such as --QUIT-AT-EOF, as  distinct
-       from  --quit-at-eof.  Such option names need only have their first let-
-       ter capitalized; the remainder of the name may be in either case.   For
+       long  option names are in uppercase, such as --QUIT-AT-EOF, as distinct
+       from --quit-at-eof.  Such option names need only have their first  let-
+       ter  capitalized; the remainder of the name may be in either case.  For
        example, --Quit-at-eof is equivalent to --QUIT-AT-EOF.
 
        Options are also taken from the environment variable "LESS".  For exam-
@@ -411,57 +427,57 @@ LESS(1)                                                                LESS(1)
 
        LESS="-options"; export LESS
 
-       On  MS-DOS,  you don't need the quotes, but you should replace any per-
+       On MS-DOS, you don't need the quotes, but you should replace  any  per-
        cent signs in the options string by double percent signs.
 
-       The environment variable is parsed before the command line, so  command
-       line  options  override  the  LESS  environment variable.  If an option
-       appears in the LESS variable, it can be reset to its default  value  on
+       The  environment variable is parsed before the command line, so command
+       line options override the LESS  environment  variable.   If  an  option
+       appears  in  the LESS variable, it can be reset to its default value on
        the command line by beginning the command line option with "-+".
 
-       For  options like -P or -D which take a following string, a dollar sign
-       ($) must be used to signal the end of the string.  For example, to  set
-       two  -D  options  on  MS-DOS, you must have a dollar sign between them,
+       For options like -P or -D which take a following string, a dollar  sign
+       ($)  must be used to signal the end of the string.  For example, to set
+       two -D options on MS-DOS, you must have a  dollar  sign  between  them,
        like this:
 
        LESS="-Dn9.1$-Ds4.1"
 
 
        -? or --help
-              This option displays a summary of the commands accepted by  less
-              (the  same  as  the  h  command).   (Depending on how your shell
-              interprets the question mark, it may be necessary to  quote  the
+              This  option displays a summary of the commands accepted by less
+              (the same as the h  command).   (Depending  on  how  your  shell
+              interprets  the  question mark, it may be necessary to quote the
               question mark, thus: "-\?".)
 
        -a or --search-skip-screen
-              Causes  searches  to  start after the last line displayed on the
-              screen, thus skipping all lines displayed  on  the  screen.   By
-              default,  searches  start  at  the second line on the screen (or
+              Causes searches to start after the last line  displayed  on  the
+              screen,  thus  skipping  all  lines displayed on the screen.  By
+              default, searches start at the second line  on  the  screen  (or
               after the last found line; see the -j option).
 
        -bn or --buffers=n
-              Specifies the amount of buffer space  less  will  use  for  each
-              file,  in  units  of  kilobytes (1024 bytes).  By default 64K of
-              buffer space is used for each file (unless the file is  a  pipe;
-              see  the  -B  option).   The  -b option specifies instead that n
+              Specifies  the  amount  of  buffer  space less will use for each
+              file, in units of kilobytes (1024 bytes).   By  default  64K  of
+              buffer  space  is used for each file (unless the file is a pipe;
+              see the -B option).  The -b  option  specifies  instead  that  n
               kilobytes of buffer space should be used for each file.  If n is
-              -1,  buffer  space is unlimited; that is, the entire file can be
+              -1, buffer space is unlimited; that is, the entire file  can  be
               read into memory.
 
        -B or --auto-buffers
               By default, when data is read from a pipe, buffers are allocated
               automatically as needed.  If a large amount of data is read from
-              the pipe, this can cause a large amount of memory  to  be  allo-
-              cated.   The  -B  option  disables  this automatic allocation of
-              buffers for pipes, so that only 64K  (or  the  amount  of  space
-              specified  by the -b option) is used for the pipe.  Warning: use
-              of -B can result in  erroneous  display,  since  only  the  most
-              recently  viewed  part  of the piped data is kept in memory; any
+              the  pipe,  this  can cause a large amount of memory to be allo-
+              cated.  The -B option  disables  this  automatic  allocation  of
+              buffers  for  pipes,  so  that  only 64K (or the amount of space
+              specified by the -b option) is used for the pipe.  Warning:  use
+              of  -B  can  result  in  erroneous  display, since only the most
+              recently viewed part of the piped data is kept  in  memory;  any
               earlier data is lost.
 
        -c or --clear-screen
-              Causes full screen repaints to be  painted  from  the  top  line
-              down.   By  default,  full screen repaints are done by scrolling
+              Causes  full  screen  repaints  to  be painted from the top line
+              down.  By default, full screen repaints are  done  by  scrolling
               from the bottom of the screen.
 
        -C or --CLEAR-SCREEN
@@ -469,23 +485,24 @@ LESS(1)                                                                LESS(1)
 
        -d or --dumb
               The -d option suppresses the error message normally displayed if
-              the  terminal is dumb; that is, lacks some important capability,
+              the terminal is dumb; that is, lacks some important  capability,
               such as the ability to clear the screen or scroll backward.  The
-              -d  option  does  not otherwise change the behavior of less on a
+              -d option does not otherwise change the behavior of  less  on  a
               dumb terminal.
 
        -Dxcolor or --color=xcolor
               [MS-DOS only] Sets the color of the text displayed.  x is a sin-
-              gle  character  which  selects  the  type of text whose color is
-              being set: n=normal, s=standout, d=bold, u=underlined,  k=blink.
-              color  is  a  pair  of numbers separated by a period.  The first
-              number selects the foreground color and the second  selects  the
-              background  color of the text.  A single number N is the same as
-              N.0.
+              gle character which selects the type  of  text  whose  color  is
+              being  set: n=normal, s=standout, d=bold, u=underlined, k=blink.
+              color is a pair of numbers separated by  a  period.   The  first
+              number  selects  the foreground color and the second selects the
+              background color of the text.  A single number N is the same  as
+              N.M, where M is the normal background color.
+
 
        -e or --quit-at-eof
-              Causes less to automatically exit the  second  time  it  reaches
-              end-of-file.   By  default, the only way to exit less is via the
+              Causes  less  to  automatically  exit the second time it reaches
+              end-of-file.  By default, the only way to exit less is  via  the
               "q" command.
 
        -E or --QUIT-AT-EOF
@@ -494,7 +511,7 @@ LESS(1)                                                                LESS(1)
 
        -f or --force
               Forces non-regular files to be opened.  (A non-regular file is a
-              directory or a device special file.)  Also suppresses the  warn-
+              directory  or a device special file.)  Also suppresses the warn-
               ing message when a binary file is opened.  By default, less will
               refuse to open non-regular files.  Note that some operating sys-
               tems will not allow directories to be read, even if -f is set.
@@ -504,283 +521,283 @@ LESS(1)                                                                LESS(1)
               played on the first screen.
 
        -g or --hilite-search
-              Normally, less will highlight ALL strings which match  the  last
-              search  command.   The  -g option changes this behavior to high-
-              light only the particular string which was  found  by  the  last
+              Normally,  less  will highlight ALL strings which match the last
+              search command.  The -g option changes this  behavior  to  high-
+              light  only  the  particular  string which was found by the last
               search command.  This can cause less to run somewhat faster than
               the default.
 
        -G or --HILITE-SEARCH
-              The -G option suppresses all highlighting of  strings  found  by
+              The  -G  option  suppresses all highlighting of strings found by
               search commands.
 
        -hn or --max-back-scroll=n
-              Specifies  a  maximum number of lines to scroll backward.  If it
+              Specifies a maximum number of lines to scroll backward.   If  it
               is necessary to scroll backward more than n lines, the screen is
               repainted in a forward direction instead.  (If the terminal does
               not have the ability to scroll backward, -h0 is implied.)
 
        -i or --ignore-case
               Causes searches to ignore case; that is, uppercase and lowercase
-              are  considered identical.  This option is ignored if any upper-
-              case letters appear in the search pattern; in other words, if  a
-              pattern  contains  uppercase  letters, then that search does not
+              are considered identical.  This option is ignored if any  upper-
+              case  letters appear in the search pattern; in other words, if a
+              pattern contains uppercase letters, then that  search  does  not
               ignore case.
 
        -I or --IGNORE-CASE
-              Like -i, but searches ignore case even if the  pattern  contains
+              Like  -i,  but searches ignore case even if the pattern contains
               uppercase letters.
 
        -jn or --jump-target=n
-              Specifies  a line on the screen where the "target" line is to be
-              positioned.  The target line is the line specified by  any  com-
-              mand  to  search for a pattern, jump to a line number, jump to a
+              Specifies a line on the screen where the "target" line is to  be
+              positioned.   The  target line is the line specified by any com-
+              mand to search for a pattern, jump to a line number, jump  to  a
               file percentage or jump to a tag.  The screen line may be speci-
-              fied  by  a number: the top line on the screen is 1, the next is
+              fied by a number: the top line on the screen is 1, the  next  is
               2, and so on.  The number may be negative to specify a line rel-
               ative to the bottom of the screen: the bottom line on the screen
-              is -1, the second to the bottom is -2, and so on.   Alternately,
-              the  screen line may be specified as a fraction of the height of
-              the screen, starting with a decimal point: .5 is in  the  middle
-              of  the screen, .3 is three tenths down from the first line, and
-              so on.  If the line is specified as a fraction, the actual  line
-              number  is  recalculated  if  the terminal window is resized, so
-              that the target line remains at the specified  fraction  of  the
-              screen  height.   If  any form of the -j option is used, forward
-              searches begin at the line immediately after  the  target  line,
+              is  -1, the second to the bottom is -2, and so on.  Alternately,
+              the screen line may be specified as a fraction of the height  of
+              the  screen,  starting with a decimal point: .5 is in the middle
+              of the screen, .3 is three tenths down from the first line,  and
+              so  on.  If the line is specified as a fraction, the actual line
+              number is recalculated if the terminal  window  is  resized,  so
+              that  the  target  line remains at the specified fraction of the
+              screen height.  If any form of the -j option  is  used,  forward
+              searches  begin  at  the line immediately after the target line,
               and backward searches begin at the target line.  For example, if
               "-j4" is used, the target line is the fourth line on the screen,
               so forward searches begin at the fifth line on the screen.
 
        -J or --status-column
-              Displays  a  status  column at the left edge of the screen.  The
-              status column shows the lines that matched the  current  search.
-              The  status  column  is  also  used if the -w or -W option is in
+              Displays a status column at the left edge of  the  screen.   The
+              status  column  shows the lines that matched the current search.
+              The status column is also used if the -w  or  -W  option  is  in
               effect.
 
        -kfilename or --lesskey-file=filename
-              Causes less to open and interpret the named file  as  a  lesskey
+              Causes  less  to  open and interpret the named file as a lesskey
               (1) file.  Multiple -k options may be specified.  If the LESSKEY
-              or LESSKEY_SYSTEM environment variable is set, or if  a  lesskey
+              or  LESSKEY_SYSTEM  environment variable is set, or if a lesskey
               file is found in a standard place (see KEY BINDINGS), it is also
               used as a lesskey file.
 
        -K or --quit-on-intr
-              Causes less to exit  immediately  when  an  interrupt  character
-              (usually  ^C) is typed.  Normally, an interrupt character causes
-              less to stop whatever it is doing  and  return  to  its  command
-              prompt.   Note  that  use  of this option makes it impossible to
+              Causes  less  to  exit  immediately  when an interrupt character
+              (usually ^C) is typed.  Normally, an interrupt character  causes
+              less  to  stop  whatever  it  is doing and return to its command
+              prompt.  Note that use of this option  makes  it  impossible  to
               return to the command prompt from the "F" command.
 
        -L or --no-lessopen
-              Ignore the LESSOPEN environment variable (see the INPUT  PREPRO-
-              CESSOR section below).  This option can be set from within less,
-              but it will apply only to files opened subsequently, not to  the
-              file which is currently open.
+              Ignore  the  LESSOPEN  environment  variable (see the INPUT PRE-
+              PROCESSOR section below).  This option can be  set  from  within
+              less,  but  it will apply only to files opened subsequently, not
+              to the file which is currently open.
 
        -m or --long-prompt
-              Causes  less  to  prompt verbosely (like more), with the percent
+              Causes less to prompt verbosely (like more),  with  the  percent
               into the file.  By default, less prompts with a colon.
 
        -M or --LONG-PROMPT
               Causes less to prompt even more verbosely than more.
 
        -n or --line-numbers
-              Suppresses line numbers.  The default (to use line numbers)  may
-              cause  less  to run more slowly in some cases, especially with a
-              very large input file.  Suppressing line  numbers  with  the  -n
-              option  will  avoid this problem.  Using line numbers means: the
+              Suppresses  line numbers.  The default (to use line numbers) may
+              cause less to run more slowly in some cases, especially  with  a
+              very  large  input  file.   Suppressing line numbers with the -n
+              option will avoid this problem.  Using line numbers  means:  the
               line number will be displayed in the verbose prompt and in the =
-              command,  and the v command will pass the current line number to
-              the editor (see also  the  discussion  of  LESSEDIT  in  PROMPTS
+              command, and the v command will pass the current line number  to
+              the  editor  (see  also  the  discussion  of LESSEDIT in PROMPTS
               below).
 
        -N or --LINE-NUMBERS
-              Causes  a  line  number to be displayed at the beginning of each
+              Causes a line number to be displayed at the  beginning  of  each
               line in the display.
 
        -ofilename or --log-file=filename
-              Causes less to copy its input to the named file as it  is  being
+              Causes  less  to copy its input to the named file as it is being
               viewed.  This applies only when the input file is a pipe, not an
-              ordinary file.  If the file already exists, less  will  ask  for
+              ordinary  file.   If  the file already exists, less will ask for
               confirmation before overwriting it.
 
        -Ofilename or --LOG-FILE=filename
               The -O option is like -o, but it will overwrite an existing file
               without asking for confirmation.
 
-              If no log file has been specified, the -o and -O options can  be
-              used  from  within  less  to specify a log file.  Without a file
+              If  no log file has been specified, the -o and -O options can be
+              used from within less to specify a log  file.   Without  a  file
               name, they will simply report the name of the log file.  The "s"
               command is equivalent to specifying -o from within less.
 
        -ppattern or --pattern=pattern
-              The  -p  option  on the command line is equivalent to specifying
-              +/pattern; that is, it tells less to start at the  first  occur-
+              The -p option on the command line is  equivalent  to  specifying
+              +/pattern;  that  is, it tells less to start at the first occur-
               rence of pattern in the file.
 
        -Pprompt or --prompt=prompt
-              Provides  a  way  to  tailor the three prompt styles to your own
+              Provides a way to tailor the three prompt  styles  to  your  own
               preference.  This option would normally be put in the LESS envi-
               ronment variable, rather than being typed in with each less com-
               mand.  Such an option must either be the last option in the LESS
-              variable,  or be terminated by a dollar sign.  -Ps followed by a
-              string changes the default (short) prompt to that  string.   -Pm
-              changes  the  medium  (-m)  prompt.   -PM  changes the long (-M)
-              prompt.  -Ph changes  the  prompt  for  the  help  screen.   -P=
-              changes  the  message printed by the = command.  -Pw changes the
-              message printed while waiting for data (in the F command).   All
-              prompt  strings  consist  of  a  sequence of letters and special
-              escape sequences.  See the section on PROMPTS for more  details.
+              variable, or be terminated by a dollar sign.  -Ps followed by  a
+              string  changes  the default (short) prompt to that string.  -Pm
+              changes the medium (-m)  prompt.   -PM  changes  the  long  (-M)
+              prompt.   -Ph  changes  the  prompt  for  the  help screen.  -P=
+              changes the message printed by the = command.  -Pw  changes  the
+              message  printed while waiting for data (in the F command).  All
+              prompt strings consist of a  sequence  of  letters  and  special
+              escape  sequences.  See the section on PROMPTS for more details.
 
        -q or --quiet or --silent
-              Causes  moderately  "quiet"  operation: the terminal bell is not
+              Causes moderately "quiet" operation: the terminal  bell  is  not
               rung if an attempt is made to scroll past the end of the file or
               before the beginning of the file.  If the terminal has a "visual
-              bell", it is used instead.  The bell will  be  rung  on  certain
-              other  errors, such as typing an invalid character.  The default
+              bell",  it  is  used  instead.  The bell will be rung on certain
+              other errors, such as typing an invalid character.  The  default
               is to ring the terminal bell in all such cases.
 
        -Q or --QUIET or --SILENT
-              Causes totally "quiet" operation: the  terminal  bell  is  never
+              Causes  totally  "quiet"  operation:  the terminal bell is never
               rung.
 
        -r or --raw-control-chars
               Causes "raw" control characters to be displayed.  The default is
-              to display control characters  using  the  caret  notation;  for
+              to  display  control  characters  using  the caret notation; for
               example, a control-A (octal 001) is displayed as "^A".  Warning:
               when the -r option is used, less cannot keep track of the actual
-              appearance  of  the screen (since this depends on how the screen
+              appearance of the screen (since this depends on how  the  screen
               responds to each type of control character).  Thus, various dis-
-              play  problems may result, such as long lines being split in the
+              play problems may result, such as long lines being split in  the
               wrong place.
 
        -R or --RAW-CONTROL-CHARS
-              Like -r, but only ANSI "color" escape sequences  are  output  in
+              Like  -r,  but  only ANSI "color" escape sequences are output in
               "raw" form.  Unlike -r, the screen appearance is maintained cor-
               rectly  in  most  cases.   ANSI  "color"  escape  sequences  are
               sequences of the form:
 
                    ESC [ ... m
 
-              where  the  "..." is zero or more color specification characters
-              For the purpose of keeping  track  of  screen  appearance,  ANSI
-              color  escape sequences are assumed to not move the cursor.  You
-              can make less think that characters other than "m" can end  ANSI
-              color  escape  sequences  by  setting  the  environment variable
+              where the "..." is zero or more color  specification  characters
+              For  the  purpose  of  keeping  track of screen appearance, ANSI
+              color escape sequences are assumed to not move the cursor.   You
+              can  make less think that characters other than "m" can end ANSI
+              color escape  sequences  by  setting  the  environment  variable
               LESSANSIENDCHARS to the list of characters which can end a color
-              escape  sequence.   And  you can make less think that characters
-              other than the standard ones may appear between the ESC and  the
-              m  by  setting  the environment variable LESSANSIMIDCHARS to the
+              escape sequence.  And you can make less  think  that  characters
+              other  than the standard ones may appear between the ESC and the
+              m by setting the environment variable  LESSANSIMIDCHARS  to  the
               list of characters which can appear.
 
        -s or --squeeze-blank-lines
-              Causes consecutive blank lines to  be  squeezed  into  a  single
+              Causes  consecutive  blank  lines  to  be squeezed into a single
               blank line.  This is useful when viewing nroff output.
 
        -S or --chop-long-lines
-              Causes  lines  longer than the screen width to be chopped rather
-              than folded.  That is, the portion of a long line that does  not
-              fit  in  the  screen width is not shown.  The default is to fold
+              Causes lines longer than the screen width to be  chopped  rather
+              than  folded.  That is, the portion of a long line that does not
+              fit in the screen width is not shown.  The default  is  to  fold
               long lines; that is, display the remainder on the next line.
 
        -ttag or --tag=tag
               The -t option, followed immediately by a TAG, will edit the file
-              containing  that tag.  For this to work, tag information must be
-              available; for example, there may  be  a  file  in  the  current
+              containing that tag.  For this to work, tag information must  be
+              available;  for  example,  there  may  be  a file in the current
               directory called "tags", which was previously built by ctags (1)
               or an equivalent command.  If the environment variable LESSGLOB-
-              ALTAGS  is set, it is taken to be the name of a command compati-
-              ble with global (1), and that command is executed  to  find  the
+              ALTAGS is set, it is taken to be the name of a command  compati-
+              ble  with  global  (1), and that command is executed to find the
               tag.  (See http://www.gnu.org/software/global/global.html).  The
-              -t option may also be specified from within less  (using  the  -
-              command)  as a way of examining a new file.  The command ":t" is
+              -t  option  may  also be specified from within less (using the -
+              command) as a way of examining a new file.  The command ":t"  is
               equivalent to specifying -t from within less.
 
        -Ttagsfile or --tag-file=tagsfile
               Specifies a tags file to be used instead of "tags".
 
        -u or --underline-special
-              Causes backspaces and carriage returns to be treated  as  print-
-              able  characters;  that  is,  they are sent to the terminal when
+              Causes  backspaces  and carriage returns to be treated as print-
+              able characters; that is, they are sent  to  the  terminal  when
               they appear in the input.
 
        -U or --UNDERLINE-SPECIAL
-              Causes backspaces, tabs and carriage returns to  be  treated  as
-              control  characters;  that  is, they are handled as specified by
+              Causes  backspaces,  tabs  and carriage returns to be treated as
+              control characters; that is, they are handled  as  specified  by
               the -r option.
 
-              By default, if neither -u nor  -U  is  given,  backspaces  which
-              appear  adjacent  to  an  underscore  character are treated spe-
-              cially: the underlined text is displayed  using  the  terminal's
-              hardware  underlining capability.  Also, backspaces which appear
-              between two identical  characters  are  treated  specially:  the
-              overstruck  text  is printed using the terminal's hardware bold-
-              face capability.  Other backspaces are deleted, along  with  the
+              By  default,  if  neither  -u  nor -U is given, backspaces which
+              appear adjacent to an  underscore  character  are  treated  spe-
+              cially:  the  underlined  text is displayed using the terminal's
+              hardware underlining capability.  Also, backspaces which  appear
+              between  two  identical  characters  are  treated specially: the
+              overstruck text is printed using the terminal's  hardware  bold-
+              face  capability.   Other backspaces are deleted, along with the
               preceding character.  Carriage returns immediately followed by a
-              newline are deleted.  other  carriage  returns  are  handled  as
-              specified  by the -r option.  Text which is overstruck or under-
+              newline  are  deleted.   other  carriage  returns are handled as
+              specified by the -r option.  Text which is overstruck or  under-
               lined can be searched for if neither -u nor -U is in effect.
 
        -V or --version
               Displays the version number of less.
 
        -w or --hilite-unread
-              Temporarily highlights the first  "new"  line  after  a  forward
+              Temporarily  highlights  the  first  "new"  line after a forward
               movement of a full page.  The first "new" line is the line imme-
-              diately following the line  previously  at  the  bottom  of  the
+              diately  following  the  line  previously  at  the bottom of the
               screen.  Also highlights the target line after a g or p command.
-              The highlight is removed at the next command which causes  move-
-              ment.   The  entire line is highlighted, unless the -J option is
-              in effect, in which case only the status column is  highlighted.
+              The  highlight is removed at the next command which causes move-
+              ment.  The entire line is highlighted, unless the -J  option  is
+              in  effect, in which case only the status column is highlighted.
 
        -W or --HILITE-UNREAD
               Like -w, but temporarily highlights the first new line after any
               forward movement command larger than one line.
 
        -xn,... or --tabs=n,...
-              Sets tab stops.  If only one n is specified, tab stops  are  set
-              at  multiples  of n.  If multiple values separated by commas are
-              specified, tab stops are set at those positions, and  then  con-
-              tinue  with  the  same  spacing  as  the last two.  For example,
-              -x9,17 will set tabs at positions  9,  17,  25,  33,  etc.   The
+              Sets  tab  stops.  If only one n is specified, tab stops are set
+              at multiples of n.  If multiple values separated by  commas  are
+              specified,  tab  stops are set at those positions, and then con-
+              tinue with the same spacing  as  the  last  two.   For  example,
+              -x9,17  will  set  tabs  at  positions  9, 17, 25, 33, etc.  The
               default for n is 8.
 
        -X or --no-init
               Disables sending the termcap initialization and deinitialization
-              strings to the terminal.  This is  sometimes  desirable  if  the
-              deinitialization  string does something unnecessary, like clear-
+              strings  to  the  terminal.   This is sometimes desirable if the
+              deinitialization string does something unnecessary, like  clear-
               ing the screen.
 
        -yn or --max-forw-scroll=n
               Specifies a maximum number of lines to scroll forward.  If it is
-              necessary  to  scroll  forward  more than n lines, the screen is
-              repainted instead.  The -c or -C option may be used  to  repaint
-              from  the top of the screen if desired.  By default, any forward
+              necessary to scroll forward more than n  lines,  the  screen  is
+              repainted  instead.   The -c or -C option may be used to repaint
+              from the top of the screen if desired.  By default, any  forward
               movement causes scrolling.
 
        -[z]n or --window=n
-              Changes the default scrolling  window  size  to  n  lines.   The
+              Changes  the  default  scrolling  window  size  to n lines.  The
               default is one screenful.  The z and w commands can also be used
-              to change the window size.  The "z" may be omitted for  compati-
+              to  change the window size.  The "z" may be omitted for compati-
               bility with some versions of more.  If the number n is negative,
-              it indicates n lines less than the  current  screen  size.   For
+              it  indicates  n  lines  less than the current screen size.  For
               example, if the screen is 24 lines, -z-4 sets the scrolling win-
-              dow to 20 lines.  If the screen is  resized  to  40  lines,  the
+              dow  to  20  lines.   If  the screen is resized to 40 lines, the
               scrolling window automatically changes to 36 lines.
 
        -"cc or --quotes=cc
-              Changes  the  filename quoting character.  This may be necessary
-              if you are trying to name a file which contains both spaces  and
-              quote  characters.  Followed by a single character, this changes
-              the quote character to that character.  Filenames  containing  a
+              Changes the filename quoting character.  This may  be  necessary
+              if  you are trying to name a file which contains both spaces and
+              quote characters.  Followed by a single character, this  changes
+              the  quote  character to that character.  Filenames containing a
               space should then be surrounded by that character rather than by
-              double quotes.  Followed by two  characters,  changes  the  open
-              quote  to the first character, and the close quote to the second
+              double  quotes.   Followed  by  two characters, changes the open
+              quote to the first character, and the close quote to the  second
               character.  Filenames containing a space should then be preceded
-              by  the  open  quote  character  and followed by the close quote
-              character.  Note  that  even  after  the  quote  characters  are
-              changed,  this  option  remains  -" (a dash followed by a double
+              by the open quote character and  followed  by  the  close  quote
+              character.   Note  that  even  after  the  quote  characters are
+              changed, this option remains -" (a dash  followed  by  a  double
               quote).
 
        -~ or --tilde
@@ -790,53 +807,54 @@ LESS(1)                                                                LESS(1)
 
        -# or --shift
               Specifies the default number of positions to scroll horizontally
-              in  the RIGHTARROW and LEFTARROW commands.  If the number speci-
-              fied is zero, it sets the default number  of  positions  to  one
+              in the RIGHTARROW and LEFTARROW commands.  If the number  speci-
+              fied  is  zero,  it  sets the default number of positions to one
               half of the screen width.
 
        --no-keypad
-              Disables  sending the keypad initialization and deinitialization
+              Disables sending the keypad initialization and  deinitialization
               strings to the terminal.  This is sometimes useful if the keypad
               strings make the numeric keypad behave in an undesirable manner.
 
        --follow-name
-              Normally, if the input file is renamed while  an  F  command  is
-              executing,  less  will  continue  to display the contents of the
-              original file despite its  name  change.   If  --follow-name  is
+              Normally,  if  the  input  file is renamed while an F command is
+              executing, less will continue to display  the  contents  of  the
+              original  file  despite  its  name  change.  If --follow-name is
               specified, during an F command less will periodically attempt to
               reopen the file by name.  If the reopen succeeds and the file is
-              a  different file from the original (which means that a new file
-              has been created  with  the  same  name  as  the  original  (now
+              a different file from the original (which means that a new  file
+              has  been  created  with  the  same  name  as  the original (now
               renamed) file), less will display the contents of that new file.
 
-       --     A command line argument of "--" marks the end  of  option  argu-
-              ments.   Any  arguments  following this are interpreted as file-
+       --     A  command  line  argument of "--" marks the end of option argu-
+              ments.  Any arguments following this are  interpreted  as  file-
               names.  This can be useful when viewing a file whose name begins
               with a "-" or "+".
 
-       +      If  a  command  line option begins with +, the remainder of that
-              option is taken to be an initial command to less.  For  example,
-              +G  tells  less  to start at the end of the file rather than the
-              beginning, and +/xyz tells it to start at the  first  occurrence
-              of  "xyz"  in  the file.  As a special case, +<number> acts like
+       +      If a command line option begins with +, the  remainder  of  that
+              option  is taken to be an initial command to less.  For example,
+              +G tells less to start at the end of the file  rather  than  the
+              beginning,  and  +/xyz tells it to start at the first occurrence
+              of "xyz" in the file.  As a special case,  +<number>  acts  like
               +<number>g; that is, it starts the display at the specified line
-              number  (however,  see  the caveat under the "g" command above).
-              If the option starts with ++, the  initial  command  applies  to
-              every  file being viewed, not just the first one.  The + command
+              number (however, see the caveat under the  "g"  command  above).
+              If  the  option  starts  with ++, the initial command applies to
+              every file being viewed, not just the first one.  The +  command
               described previously may also be used to set (or change) an ini-
               tial command for every file.
 
 
 LINE EDITING
-       When  entering command line at the bottom of the screen (for example, a
+       When entering command line at the bottom of the screen (for example,  a
        filename for the :e command, or the pattern for a search command), cer-
-       tain  keys  can  be used to manipulate the command line.  Most commands
-       have an alternate form in [ brackets ] which can be used if a key  does
-       not  exist  on a particular keyboard.  (The bracketed forms do not work
-       in the MS-DOS version.)  Any of these special keys may be entered  lit-
-       erally  by  preceding it with the "literal" character, either ^V or ^A.
-       A backslash itself may also be entered literally by entering two  back-
-       slashes.
+       tain keys can be used to manipulate the command  line.   Most  commands
+       have  an alternate form in [ brackets ] which can be used if a key does
+       not exist on a particular keyboard.  (Note  that  the  forms  beginning
+       with  ESC do not work in some MS-DOS and Windows systems because ESC is
+       the line erase character.)  Any of these special keys  may  be  entered
+       literally  by  preceding  it with the "literal" character, either ^V or
+       ^A.  A backslash itself may also be entered literally by  entering  two
+       backslashes.
 
        LEFTARROW [ ESC-h ]
               Move the cursor one space to the left.
@@ -1021,6 +1039,11 @@ LESS(1)                                                                LESS(1)
        is no replacement file to clean up.  In this case, the replacement file
        name passed to the LESSCLOSE postprocessor is "-".
 
+       For compatibility with previous versions of less, the input pipe is not
+       used  if  less  is  viewing  standard input.  However, if the character
+       after the vertical bar is a dash (-), the input pipe is used  on  stan-
+       dard input as well as other files.
+
 
 NATIONAL CHARACTER SETS
        There are three types of characters in the input file:
@@ -1029,25 +1052,25 @@ LESS(1)                                                                LESS(1)
               can be displayed directly to the screen.
 
        control characters
-              should not be displayed directly, but are expected to  be  found
+              should  not  be displayed directly, but are expected to be found
               in ordinary text files (such as backspace and tab).
 
        binary characters
-              should  not  be  displayed  directly  and are not expected to be
+              should not be displayed directly and  are  not  expected  to  be
               found in text files.
 
        A "character set" is simply a description of which characters are to be
-       considered  normal,  control,  and binary.  The LESSCHARSET environment
-       variable may be used to select a character set.   Possible  values  for
+       considered normal, control, and binary.   The  LESSCHARSET  environment
+       variable  may  be  used to select a character set.  Possible values for
        LESSCHARSET are:
 
-       ascii  BS,  TAB, NL, CR, and formfeed are control characters, all chars
-              with values between 32 and 126 are normal, and  all  others  are
+       ascii  BS, TAB, NL, CR, and formfeed are control characters, all  chars
+              with  values  between  32 and 126 are normal, and all others are
               binary.
 
        iso8859
-              Selects  an  ISO 8859 character set.  This is the same as ASCII,
-              except characters between 160 and  255  are  treated  as  normal
+              Selects an ISO 8859 character set.  This is the same  as  ASCII,
+              except  characters  between  160  and  255 are treated as normal
               characters.
 
        latin1 Same as iso8859.
@@ -1059,8 +1082,8 @@ LESS(1)                                                                LESS(1)
        ebcdic Selects an EBCDIC character set.
 
        IBM-1047
-              Selects  an  EBCDIC  character set used by OS/390 Unix Services.
-              This is the EBCDIC analogue of latin1.  You get similar  results
+              Selects an EBCDIC character set used by  OS/390  Unix  Services.
+              This  is the EBCDIC analogue of latin1.  You get similar results
               by setting either LESSCHARSET=IBM-1047 or LC_CTYPE=en_US in your
               environment.
 
@@ -1068,29 +1091,29 @@ LESS(1)                                                                LESS(1)
 
        next   Selects a character set appropriate for NeXT computers.
 
-       utf-8  Selects the UTF-8 encoding  of  the  ISO  10646  character  set.
-              UTF-8  is  special  in that it supports multi-byte characters in
-              the input file.  It is the  only  character  set  that  supports
+       utf-8  Selects  the  UTF-8  encoding  of  the  ISO 10646 character set.
+              UTF-8 is special in that it supports  multi-byte  characters  in
+              the  input  file.   It  is  the only character set that supports
               multi-byte characters.
 
        windows
-              Selects  a  character  set appropriate for Microsoft Windows (cp
+              Selects a character set appropriate for  Microsoft  Windows  (cp
               1251).
 
-       In special cases, it may be desired to tailor less to use  a  character
-       set  other  than  the ones definable by LESSCHARSET.  In this case, the
-       environment variable LESSCHARDEF can be used to define a character set.
-       It  should be set to a string where each character in the string repre-
-       sents one character in the character set.  The character  "."  is  used
-       for a normal character, "c" for control, and "b" for binary.  A decimal
-       number may be used for repetition.  For example, "bccc4b."  would  mean
-       character  0  is  binary,  1,  2  and  3 are control, 4, 5, 6 and 7 are
+       In  rare cases, it may be desired to tailor less to use a character set
+       other than the ones definable by LESSCHARSET.  In this case, the  envi-
+       ronment variable LESSCHARDEF can be used to define a character set.  It
+       should be set to a string where each character in the string represents
+       one  character  in  the character set.  The character "." is used for a
+       normal character, "c" for control, and "b" for binary.  A decimal  num-
+       ber  may  be  used  for  repetition.  For example, "bccc4b." would mean
+       character 0 is binary, 1, 2 and 3 are  control,  4,  5,  6  and  7  are
        binary, and 8 is normal.  All characters after the last are taken to be
-       the  same  as  the  last,  so characters 9 through 255 would be normal.
-       (This is an example, and does not necessarily represent any real  char-
+       the same as the last, so characters 9  through  255  would  be  normal.
+       (This  is an example, and does not necessarily represent any real char-
        acter set.)
 
-       This  table  shows the value of LESSCHARDEF which is equivalent to each
+       This table shows the value of LESSCHARDEF which is equivalent  to  each
        of the possible values for LESSCHARSET:
 
             ascii     8bcccbcc18b95.b
@@ -1104,66 +1127,66 @@ LESS(1)                                                                LESS(1)
             latin1    8bcccbcc18b95.33b.
             next      8bcccbcc18b95.bb125.bb
 
-       If neither LESSCHARSET nor LESSCHARDEF is set, but any of  the  strings
-       "UTF-8",  "UTF8",  "utf-8" or "utf8" is found in the LC_ALL, LC_TYPE or
+       If  neither  LESSCHARSET nor LESSCHARDEF is set, but any of the strings
+       "UTF-8", "UTF8", "utf-8" or "utf8" is found in the LC_ALL,  LC_TYPE  or
        LANG environment variables, then the default character set is utf-8.
 
-       If that string is not found, but your  system  supports  the  setlocale
-       interface,  less  will  use  setlocale  to determine the character set.
-       setlocale is controlled by setting the  LANG  or  LC_CTYPE  environment
+       If  that  string  is  not found, but your system supports the setlocale
+       interface, less will use setlocale  to  determine  the  character  set.
+       setlocale  is  controlled  by  setting the LANG or LC_CTYPE environment
        variables.
 
-       Finally,  if the setlocale interface is also not available, the default
+       Finally, if the setlocale interface is also not available, the  default
        character set is latin1.
 
-       Control and  binary  characters  are  displayed  in  standout  (reverse
+       Control  and  binary  characters  are  displayed  in  standout (reverse
        video).  Each such character is displayed in caret notation if possible
-       (e.g. ^A for control-A).  Caret notation is used only if inverting  the
+       (e.g.  ^A for control-A).  Caret notation is used only if inverting the
        0100 bit results in a normal printable character.  Otherwise, the char-
-       acter is displayed as a hex number in angle brackets.  This format  can
-       be  changed by setting the LESSBINFMT environment variable.  LESSBINFMT
+       acter  is displayed as a hex number in angle brackets.  This format can
+       be changed by setting the LESSBINFMT environment variable.   LESSBINFMT
        may begin with a "*" and one character to select the display attribute:
-       "*k"  is  blinking, "*d" is bold, "*u" is underlined, "*s" is standout,
-       and "*n" is normal.  If LESSBINFMT does not begin with  a  "*",  normal
-       attribute  is  assumed.   The remainder of LESSBINFMT is a string which
-       may include one printf-style escape sequence (a % followed by x, X,  o,
-       d,  etc.).   For  example, if LESSBINFMT is "*u[%x]", binary characters
-       are displayed in underlined hexadecimal surrounded  by  brackets.   The
-       default  if  no LESSBINFMT is specified is "*s<%X>".  The default if no
-       LESSBINFMT is specified is "*s<%02X>".  Warning: the result of  expand-
+       "*k" is blinking, "*d" is bold, "*u" is underlined, "*s"  is  standout,
+       and  "*n"  is  normal.  If LESSBINFMT does not begin with a "*", normal
+       attribute is assumed.  The remainder of LESSBINFMT is  a  string  which
+       may  include one printf-style escape sequence (a % followed by x, X, o,
+       d, etc.).  For example, if LESSBINFMT is  "*u[%x]",  binary  characters
+       are  displayed  in  underlined hexadecimal surrounded by brackets.  The
+       default if no LESSBINFMT is specified is "*s<%X>".  The default  if  no
+       LESSBINFMT  is specified is "*s<%02X>".  Warning: the result of expand-
        ing the character via LESSBINFMT must be less than 31 characters.
 
        When the character set is utf-8, the LESSUTFBINFMT environment variable
        acts similarly to LESSBINFMT but it applies to Unicode code points that
-       were  successfully  decoded but are unsuitable for display (e.g., unas-
-       signed code points).  Its default  value  is  "<U+%04lX>".   Note  that
-       LESSUTFBINFMT  and  LESSBINFMT  share  their  display attribute setting
-       ("*x") so specifying one will affect both; LESSUTFBINFMT is read  after
-       LESSBINFMT  so  its  setting,  if any, will have priority.  Problematic
-       octets in a UTF-8 file (octets of a truncated  sequence,  octets  of  a
-       complete  but  non-shortest  form  sequence,  illegal octets, and stray
-       trailing octets) are displayed individually using LESSBINFMT so  as  to
+       were successfully decoded but are unsuitable for display  (e.g.,  unas-
+       signed  code  points).   Its  default  value is "<U+%04lX>".  Note that
+       LESSUTFBINFMT and LESSBINFMT  share  their  display  attribute  setting
+       ("*x")  so specifying one will affect both; LESSUTFBINFMT is read after
+       LESSBINFMT so its setting, if any,  will  have  priority.   Problematic
+       octets  in  a  UTF-8  file (octets of a truncated sequence, octets of a
+       complete but non-shortest form  sequence,  illegal  octets,  and  stray
+       trailing  octets)  are displayed individually using LESSBINFMT so as to
        facilitate diagnostic of how the UTF-8 file is ill-formed.
 
 
 PROMPTS
-       The  -P option allows you to tailor the prompt to your preference.  The
-       string given to the -P option replaces  the  specified  prompt  string.
+       The -P option allows you to tailor the prompt to your preference.   The
+       string  given  to  the  -P option replaces the specified prompt string.
        Certain characters in the string are interpreted specially.  The prompt
-       mechanism is rather complicated to provide flexibility, but  the  ordi-
-       nary  user need not understand the details of constructing personalized
+       mechanism  is  rather complicated to provide flexibility, but the ordi-
+       nary user need not understand the details of constructing  personalized
        prompt strings.
 
-       A percent sign followed by a single character is expanded according  to
+       A  percent sign followed by a single character is expanded according to
        what the following character is:
 
-       %bX    Replaced  by the byte offset into the current input file.  The b
+       %bX    Replaced by the byte offset into the current input file.  The  b
               is followed by a single character (shown as X above) which spec-
-              ifies  the line whose byte offset is to be used.  If the charac-
-              ter is a "t", the byte offset of the top line in the display  is
+              ifies the line whose byte offset is to be used.  If the  charac-
+              ter  is a "t", the byte offset of the top line in the display is
               used, an "m" means use the middle line, a "b" means use the bot-
-              tom line, a "B" means use the line just after the  bottom  line,
-              and  a  "j"  means use the "target" line, as specified by the -j
+              tom  line,  a "B" means use the line just after the bottom line,
+              and a "j" means use the "target" line, as specified  by  the  -j
               option.
 
        %B     Replaced by the size of the current input file.
@@ -1171,39 +1194,39 @@ LESS(1)                                                                LESS(1)
        %c     Replaced by the column number of the text appearing in the first
               column of the screen.
 
-       %dX    Replaced  by  the  page number of a line in the input file.  The
+       %dX    Replaced by the page number of a line in the  input  file.   The
               line to be used is determined by the X, as with the %b option.
 
-       %D     Replaced by the number of pages in the input  file,  or  equiva-
+       %D     Replaced  by  the  number of pages in the input file, or equiva-
               lently, the page number of the last line in the input file.
 
-       %E     Replaced  by the name of the editor (from the VISUAL environment
-              variable, or the EDITOR environment variable if  VISUAL  is  not
+       %E     Replaced by the name of the editor (from the VISUAL  environment
+              variable,  or  the  EDITOR environment variable if VISUAL is not
               defined).  See the discussion of the LESSEDIT feature below.
 
        %f     Replaced by the name of the current input file.
 
-       %i     Replaced  by  the index of the current file in the list of input
+       %i     Replaced by the index of the current file in the list  of  input
               files.
 
-       %lX    Replaced by the line number of a line in the  input  file.   The
+       %lX    Replaced  by  the  line number of a line in the input file.  The
               line to be used is determined by the X, as with the %b option.
 
-       %L     Replaced  by the line number of the last line in the input file.
+       %L     Replaced by the line number of the last line in the input  file.
 
        %m     Replaced by the total number of input files.
 
-       %pX    Replaced by the percent into the current input  file,  based  on
-              byte  offsets.  The line used is determined by the X as with the
+       %pX    Replaced  by  the  percent into the current input file, based on
+              byte offsets.  The line used is determined by the X as with  the
               %b option.
 
-       %PX    Replaced by the percent into the current input  file,  based  on
-              line  numbers.  The line used is determined by the X as with the
+       %PX    Replaced  by  the  percent into the current input file, based on
+              line numbers.  The line used is determined by the X as with  the
               %b option.
 
        %s     Same as %B.
 
-       %t     Causes any trailing spaces to be removed.  Usually used  at  the
+       %t     Causes  any  trailing spaces to be removed.  Usually used at the
               end of the string, but may appear anywhere.
 
        %x     Replaced by the name of the next input file in the list.
@@ -1211,18 +1234,18 @@ LESS(1)                                                                LESS(1)
        If any item is unknown (for example, the file size if input is a pipe),
        a question mark is printed instead.
 
-       The format of the prompt string can be  changed  depending  on  certain
-       conditions.   A  question mark followed by a single character acts like
-       an "IF": depending on the following character, a  condition  is  evalu-
-       ated.   If the condition is true, any characters following the question
-       mark and condition character, up to  a  period,  are  included  in  the
-       prompt.   If  the condition is false, such characters are not included.
-       A colon appearing between the question mark and the period can be  used
+       The  format  of  the  prompt string can be changed depending on certain
+       conditions.  A question mark followed by a single character  acts  like
+       an  "IF":  depending  on the following character, a condition is evalu-
+       ated.  If the condition is true, any characters following the  question
+       mark  and  condition  character,  up  to  a period, are included in the
+       prompt.  If the condition is false, such characters are  not  included.
+       A  colon appearing between the question mark and the period can be used
        to establish an "ELSE": any characters between the colon and the period
-       are included in the string if and only if the IF  condition  is  false.
+       are  included  in  the string if and only if the IF condition is false.
        Condition characters (which follow a question mark) may be:
 
-       ?a     True  if any characters have been included in the prompt so far.
+       ?a     True if any characters have been included in the prompt so  far.
 
        ?bX    True if the byte offset of the specified line is known.
 
@@ -1234,7 +1257,7 @@ LESS(1)                                                                LESS(1)
 
        ?e     True if at end-of-file.
 
-       ?f     True if there is an input filename (that is, if input is  not  a
+       ?f     True  if  there is an input filename (that is, if input is not a
               pipe).
 
        ?lX    True if the line number of the specified line is known.
@@ -1245,46 +1268,46 @@ LESS(1)                                                                LESS(1)
 
        ?n     True if this is the first prompt in a new input file.
 
-       ?pX    True  if  the percent into the current input file, based on byte
+       ?pX    True if the percent into the current input file, based  on  byte
               offsets, of the specified line is known.
 
-       ?PX    True if the percent into the current input file, based  on  line
+       ?PX    True  if  the percent into the current input file, based on line
               numbers, of the specified line is known.
 
        ?s     Same as "?B".
 
-       ?x     True  if  there  is  a  next input file (that is, if the current
+       ?x     True if there is a next input file  (that  is,  if  the  current
               input file is not the last one).
 
-       Any characters other than  the  special  ones  (question  mark,  colon,
-       period,  percent,  and  backslash) become literally part of the prompt.
-       Any of the special characters may be included in the  prompt  literally
+       Any  characters  other  than  the  special  ones (question mark, colon,
+       period, percent, and backslash) become literally part  of  the  prompt.
+       Any  of  the special characters may be included in the prompt literally
        by preceding it with a backslash.
 
        Some examples:
 
        ?f%f:Standard input.
 
-       This  prompt prints the filename, if known; otherwise the string "Stan-
+       This prompt prints the filename, if known; otherwise the string  "Stan-
        dard input".
 
        ?f%f .?ltLine %lt:?pt%pt\%:?btByte %bt:-...
 
-       This prompt would print the filename, if known.  The filename  is  fol-
-       lowed  by  the  line  number, if known, otherwise the percent if known,
-       otherwise the byte offset if known.   Otherwise,  a  dash  is  printed.
-       Notice  how  each  question  mark  has a matching period, and how the %
+       This  prompt  would print the filename, if known.  The filename is fol-
+       lowed by the line number, if known, otherwise  the  percent  if  known,
+       otherwise  the  byte  offset  if  known.  Otherwise, a dash is printed.
+       Notice how each question mark has a matching  period,  and  how  the  %
        after the %pt is included literally by escaping it with a backslash.
 
        ?n?f%f .?m(file %i of %m) ..?e(END) ?x- Next\: %x..%t
 
-       This prints the filename if this is the first prompt in  a  file,  fol-
-       lowed  by  the  "file  N  of N" message if there is more than one input
-       file.  Then, if we are at end-of-file, the string  "(END)"  is  printed
-       followed  by  the name of the next file, if there is one.  Finally, any
+       This  prints  the  filename if this is the first prompt in a file, fol-
+       lowed by the "file N of N" message if there  is  more  than  one  input
+       file.   Then,  if  we are at end-of-file, the string "(END)" is printed
+       followed by the name of the next file, if there is one.   Finally,  any
        trailing spaces are truncated.  This is the default prompt.  For refer-
-       ence,  here  are  the  defaults  for  the  other two prompts (-m and -M
-       respectively).  Each is broken into  two  lines  here  for  readability
+       ence, here are the defaults for  the  other  two  prompts  (-m  and  -M
+       respectively).   Each  is  broken  into  two lines here for readability
        only.
 
        ?n?f%f .?m(file %i of %m) ..?e(END) ?x- Next\: %x.:
@@ -1298,22 +1321,22 @@ LESS(1)                                                                LESS(1)
        ?f%f .?m(file %i of %m) .?ltlines %lt-%lb?L/%L. .
             byte %bB?s/%s. ?e(END) :?pB%pB\%..%t
 
-       The  prompt expansion features are also used for another purpose: if an
-       environment variable LESSEDIT is defined, it is used as the command  to
-       be  executed  when  the  v  command is invoked.  The LESSEDIT string is
-       expanded in the same way as the prompt strings.  The default value  for
+       The prompt expansion features are also used for another purpose: if  an
+       environment  variable LESSEDIT is defined, it is used as the command to
+       be executed when the v command is  invoked.   The  LESSEDIT  string  is
+       expanded  in the same way as the prompt strings.  The default value for
        LESSEDIT is:
 
             %E ?lm+%lm. %f
 
        Note that this expands to the editor name, followed by a + and the line
-       number, followed by the file name.  If your editor does not accept  the
-       "+linenumber"  syntax,  or  has other differences in invocation syntax,
+       number,  followed by the file name.  If your editor does not accept the
+       "+linenumber" syntax, or has other differences  in  invocation  syntax,
        the LESSEDIT variable can be changed to modify this default.
 
 
 SECURITY
-       When the environment variable LESSSECURE is set to 1, less  runs  in  a
+       When  the  environment  variable LESSSECURE is set to 1, less runs in a
        "secure" mode.  This means these features are disabled:
 
               !      the shell command
@@ -1339,54 +1362,54 @@ LESS(1)                                                                LESS(1)
 
 COMPATIBILITY WITH MORE
        If the environment variable LESS_IS_MORE is set to 1, or if the program
-       is invoked via a file link named "more", less behaves (mostly) in  con-
-       formance  with  the  POSIX "more" command specification.  In this mode,
+       is  invoked via a file link named "more", less behaves (mostly) in con-
+       formance with the POSIX "more" command specification.   In  this  mode,
        less behaves differently in these ways:
 
-       The -e option works differently.  If the -e option  is  not  set,  less
-       behaves  as  if  the -E option were set.  If the -e option is set, less
+       The  -e  option  works  differently.  If the -e option is not set, less
+       behaves as if the -E option were set.  If the -e option  is  set,  less
        behaves as if the -e and -F options were set.
 
-       The -m option works differently.  If the -m  option  is  not  set,  the
-       medium  prompt  is used, and it is prefixed with the string "--More--".
+       The  -m  option  works  differently.   If the -m option is not set, the
+       medium prompt is used, and it is prefixed with the  string  "--More--".
        If the -m option is set, the short prompt is used.
 
-       The -n option acts like the -z option.  The normal behavior of  the  -n
+       The  -n  option acts like the -z option.  The normal behavior of the -n
        option is unavailable in this mode.
 
-       The  parameter  to  the  -p option is taken to be a less command rather
+       The parameter to the -p option is taken to be  a  less  command  rather
        than a search pattern.
 
-       The LESS environment variable is  ignored,  and  the  MORE  environment
+       The  LESS  environment  variable  is  ignored, and the MORE environment
        variable is used in its place.
 
 
 ENVIRONMENT VARIABLES
        Environment variables may be specified either in the system environment
-       as usual, or in a lesskey  (1)  file.   If  environment  variables  are
-       defined  in  more  than one place, variables defined in a local lesskey
-       file take precedence over variables defined in the system  environment,
+       as  usual,  or  in  a  lesskey  (1) file.  If environment variables are
+       defined in more than one place, variables defined in  a  local  lesskey
+       file  take precedence over variables defined in the system environment,
        which take precedence over variables defined in the system-wide lesskey
        file.
 
        COLUMNS
               Sets the number of columns on the screen.  Takes precedence over
-              the  number  of columns specified by the TERM variable.  (But if
+              the number of columns specified by the TERM variable.   (But  if
               you  have  a  windowing  system  which  supports  TIOCGWINSZ  or
-              WIOCGETD,  the  window  system's  idea  of the screen size takes
+              WIOCGETD, the window system's idea  of  the  screen  size  takes
               precedence over the LINES and COLUMNS environment variables.)
 
        EDITOR The name of the editor (used for the v command).
 
-       HOME   Name of the user's home directory (used to find a  lesskey  file
+       HOME   Name  of  the user's home directory (used to find a lesskey file
               on Unix and OS/2 systems).
 
        HOMEDRIVE, HOMEPATH
-              Concatenation  of  the  HOMEDRIVE and HOMEPATH environment vari-
+              Concatenation of the HOMEDRIVE and  HOMEPATH  environment  vari-
               ables is the name of the user's home directory if the HOME vari-
               able is not set (only in the Windows version).
 
-       INIT   Name  of  the user's init directory (used to find a lesskey file
+       INIT   Name of the user's init directory (used to find a  lesskey  file
               on OS/2 systems).
 
        LANG   Language for determining the character set.
@@ -1397,12 +1420,12 @@ LESS(1)                                                                LESS(1)
        LESS   Options which are passed to less automatically.
 
        LESSANSIENDCHARS
-              Characters which may end an ANSI color escape sequence  (default
+              Characters  which may end an ANSI color escape sequence (default
               "m").
 
        LESSANSIMIDCHARS
-              Characters  which  may  appear between the ESC character and the
-              end  character  in  an  ANSI  color  escape  sequence   (default
+              Characters which may appear between the ESC  character  and  the
+              end   character  in  an  ANSI  color  escape  sequence  (default
               "0123456789;[?!"'#%()*+ ".
 
        LESSBINFMT
@@ -1419,24 +1442,24 @@ LESS(1)                                                                LESS(1)
 
        LESSECHO
               Name of the lessecho program (default "lessecho").  The lessecho
-              program is needed to expand metacharacters, such as * and ?,  in
+              program  is needed to expand metacharacters, such as * and ?, in
               filenames on Unix systems.
 
        LESSEDIT
-              Editor  prototype  string (used for the v command).  See discus-
+              Editor prototype string (used for the v command).   See  discus-
               sion under PROMPTS.
 
        LESSGLOBALTAGS
-              Name of the command used by the -t option to find  global  tags.
+              Name  of  the command used by the -t option to find global tags.
               Normally should be set to "global" if your system has the global
               (1) command.  If not set, global tags are not used.
 
        LESSHISTFILE
-              Name of the history file used to remember  search  commands  and
-              shell  commands  between  invocations of less.  If set to "-" or
-              "/dev/null", a  history  file  is  not  used.   The  default  is
-              "$HOME/.lesshst"  on  Unix  systems, "$HOME/_lesshst" on DOS and
-              Windows systems, or "$HOME/lesshst.ini"  or  "$INIT/lesshst.ini"
+              Name  of  the  history file used to remember search commands and
+              shell commands between invocations of less.  If set  to  "-"  or
+              "/dev/null",  a  history  file  is  not  used.   The  default is
+              "$HOME/.lesshst" on Unix systems, "$HOME/_lesshst"  on  DOS  and
+              Windows  systems,  or "$HOME/lesshst.ini" or "$INIT/lesshst.ini"
               on OS/2 systems.
 
        LESSHISTSIZE
@@ -1450,13 +1473,13 @@ LESS(1)                                                                LESS(1)
               Name of the default system-wide lesskey(1) file.
 
        LESSMETACHARS
-              List of characters which are considered "metacharacters" by  the
+              List  of characters which are considered "metacharacters" by the
               shell.
 
        LESSMETAESCAPE
-              Prefix  which  less will add before each metacharacter in a com-
-              mand sent to the shell.  If LESSMETAESCAPE is an  empty  string,
-              commands  containing  metacharacters  will  not be passed to the
+              Prefix which less will add before each metacharacter in  a  com-
+              mand  sent  to the shell.  If LESSMETAESCAPE is an empty string,
+              commands containing metacharacters will not  be  passed  to  the
               shell.
 
        LESSOPEN
@@ -1466,7 +1489,7 @@ LESS(1)                                                                LESS(1)
               Runs less in "secure" mode.  See discussion under SECURITY.
 
        LESSSEPARATOR
-              String to be appended to a directory name  in  filename  comple-
+              String  to  be  appended to a directory name in filename comple-
               tion.
 
        LESSUTFBINFMT
@@ -1475,16 +1498,16 @@ LESS(1)                                                                LESS(1)
        LESS_IS_MORE
               Emulate the more (1) command.
 
-       LINES  Sets  the  number of lines on the screen.  Takes precedence over
+       LINES  Sets the number of lines on the screen.  Takes  precedence  over
               the number of lines specified by the TERM variable.  (But if you
-              have  a  windowing system which supports TIOCGWINSZ or WIOCGETD,
-              the window system's idea of the  screen  size  takes  precedence
+              have a windowing system which supports TIOCGWINSZ  or  WIOCGETD,
+              the  window  system's  idea  of the screen size takes precedence
               over the LINES and COLUMNS environment variables.)
 
-       PATH   User's  search  path  (used to find a lesskey file on MS-DOS and
+       PATH   User's search path (used to find a lesskey file  on  MS-DOS  and
               OS/2 systems).
 
-       SHELL  The shell used to execute the ! command, as well  as  to  expand
+       SHELL  The  shell  used  to execute the ! command, as well as to expand
               filenames.
 
        TERM   The type of terminal on which less is being run.
@@ -1496,59 +1519,29 @@ LESS(1)                                                                LESS(1)
        lesskey(1)
 
 
-WARNINGS
-       The  =  command and prompts (unless changed by -P) report the line num-
-       bers of the lines at the top and bottom of the screen, but the byte and
-       percent of the line after the one at the bottom of the screen.
-
-       On  certain  older  terminals (the so-called "magic cookie" terminals),
-       search highlighting will cause an erroneous display.   On  such  termi-
-       nals,  search  highlighting  is  disabled  by default to avoid possible
-       problems.
-
-       When searching in a binary file, text which follows a null byte may not
-       be  found.   This  problem  does  not occur when searching with regular
-       expressions turned off via ^R, and also does not  occur  when  less  is
-       compiled to use the PCRE regular expression library.
-
-       In certain cases, when search highlighting is enabled and a search pat-
-       tern begins with a ^, more text than the matching string may  be  high-
-       lighted.  (This problem does not occur when less is compiled to use the
-       POSIX regular expression package.)
-
-       On some systems, setlocale claims that ASCII characters 0 thru  31  are
-       control  characters rather than binary characters.  This causes less to
-       treat some binary files as ordinary, non-binary files.   To  workaround
-       this  problem,  set the environment variable LESSCHARSET to "ascii" (or
-       whatever character set is appropriate).
-
-       This manual is too long.
-
-       See http://www.greenwoodsoftware.com/less for the latest list of  known
-       bugs in less.
-
-
 COPYRIGHT
-       Copyright (C) 1984-2007  Mark Nudelman
+       Copyright (C) 1984-2008  Mark Nudelman
 
-       less  is  part of the GNU project and is free software.  You can redis-
-       tribute it and/or modify it under the terms of either (1) the GNU  Gen-
-       eral  Public  License  as published by the Free Software Foundation; or
+       less is part of the GNU project and is free software.  You  can  redis-
+       tribute  it and/or modify it under the terms of either (1) the GNU Gen-
+       eral Public License as published by the Free  Software  Foundation;  or
        (2) the Less License.  See the file README in the less distribution for
        more details regarding redistribution.  You should have received a copy
-       of the GNU General Public License along with the source for  less;  see
-       the  file  COPYING.   If not, write to the Free Software Foundation, 59
-       Temple Place, Suite 330, Boston, MA  02111-1307, USA.  You should  also
+       of  the  GNU General Public License along with the source for less; see
+       the file COPYING.  If not, write to the Free  Software  Foundation,  59
+       Temple  Place, Suite 330, Boston, MA  02111-1307, USA.  You should also
        have received a copy of the Less License; see the file LICENSE.
 
        less is distributed in the hope that it will be useful, but WITHOUT ANY
-       WARRANTY; without even the implied warranty of MERCHANTABILITY or  FIT-
-       NESS  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+       WARRANTY;  without even the implied warranty of MERCHANTABILITY or FIT-
+       NESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License  for
        more details.
 
 
 AUTHOR
        Mark Nudelman <markn@greenwoodsoftware.com>
+       See http://www.greenwoodsoftware.com/less/bugs.html for the latest list
+       of known bugs in less.
        Send bug reports or comments to the above address or to
        bug-less@gnu.org.
        For more information, see the less homepage at
@@ -1556,4 +1549,4 @@ LESS(1)                                                                LESS(1)
 
 
 
-                           Version 416: 22 Nov 2007                    LESS(1)
+                           Version 429: 11 Apr 2009                    LESS(1)