svn commit: r250590 - vendor/less/dist
Xin LI
delphij at FreeBSD.org
Wed May 15 05:27:48 UTC 2013
Author: delphij
Date: Mon May 13 05:27:43 2013
New Revision: 250590
URL: http://svnweb.freebsd.org/changeset/base/250590
Log:
Vendor import of less v458.
Modified:
vendor/less/dist/NEWS
vendor/less/dist/README
vendor/less/dist/cmdbuf.c
vendor/less/dist/help.c
vendor/less/dist/less.hlp
vendor/less/dist/less.man
vendor/less/dist/less.nro
vendor/less/dist/lessecho.man
vendor/less/dist/lessecho.nro
vendor/less/dist/lesskey.man
vendor/less/dist/lesskey.nro
vendor/less/dist/option.c
vendor/less/dist/opttbl.c
vendor/less/dist/version.c
Modified: vendor/less/dist/NEWS
==============================================================================
--- vendor/less/dist/NEWS Mon May 13 04:47:26 2013 (r250589)
+++ vendor/less/dist/NEWS Mon May 13 05:27:43 2013 (r250590)
@@ -11,9 +11,10 @@
======================================================================
- Major changes between "less" versions 451 and 456
+ Major changes between "less" versions 451 and 458
-* Allow backslash escaping of metacharacters in LESS environment variable.
+* Allow backslash escaping of metacharacters in LESS environment variable
+ after the --use-backslash option.
* Don't quit if syntax errors are found in command line options.
@@ -25,6 +26,8 @@
* Fix Win32 attribute display bug.
+* Fix display bug when using up/down arrow on the command line.
+
======================================================================
Major changes between "less" versions 444 and 451
Modified: vendor/less/dist/README
==============================================================================
--- vendor/less/dist/README Mon May 13 04:47:26 2013 (r250589)
+++ vendor/less/dist/README Mon May 13 05:27:43 2013 (r250590)
@@ -1,7 +1,7 @@
- Less, version 456
+ Less, version 458
- This is the distribution of less, version 456, released 08 Nov 2012.
+ This is the distribution of less, version 458, released 04 Apr 2013.
This program is part of the GNU project (http://www.gnu.org).
This program is free software. You may redistribute it and/or
Modified: vendor/less/dist/cmdbuf.c
==============================================================================
--- vendor/less/dist/cmdbuf.c Mon May 13 04:47:26 2013 (r250589)
+++ vendor/less/dist/cmdbuf.c Mon May 13 05:27:43 2013 (r250590)
@@ -727,9 +727,9 @@ cmd_updown(action)
s = ml->string;
if (s == NULL)
s = "";
- strcpy(cmdbuf, s);
cmd_home();
clear_eol();
+ strcpy(cmdbuf, s);
for (cp = cmdbuf; *cp != '\0'; )
cmd_right();
return (CC_OK);
Modified: vendor/less/dist/help.c
==============================================================================
--- vendor/less/dist/help.c Mon May 13 04:47:26 2013 (r250589)
+++ vendor/less/dist/help.c Mon May 13 05:27:43 2013 (r250590)
@@ -110,7 +110,7 @@ constant char helpdata[] = {
' ',' ',' ',' ',' ',' ',' ',' ','M','o','s','t',' ','o','p','t','i','o','n','s',' ','m','a','y',' ','b','e',' ','c','h','a','n','g','e','d',' ','e','i','t','h','e','r',' ','o','n',' ','t','h','e',' ','c','o','m','m','a','n','d',' ','l','i','n','e',',','\n',
' ',' ',' ',' ',' ',' ',' ',' ','o','r',' ','f','r','o','m',' ','w','i','t','h','i','n',' ','l','e','s','s',' ','b','y',' ','u','s','i','n','g',' ','t','h','e',' ','-',' ','o','r',' ','-','-',' ','c','o','m','m','a','n','d','.','\n',
' ',' ',' ',' ',' ',' ',' ',' ','O','p','t','i','o','n','s',' ','m','a','y',' ','b','e',' ','g','i','v','e','n',' ','i','n',' ','o','n','e',' ','o','f',' ','t','w','o',' ','f','o','r','m','s',':',' ','e','i','t','h','e','r',' ','a',' ','s','i','n','g','l','e','\n',
-' ',' ',' ',' ',' ',' ',' ',' ','c','h','a','r','a','c','t','e','r',' ','p','r','e','c','e','d','e','d',' ','b','y',' ','a',' ','-',',',' ','o','r',' ','a',' ','n','a','m','e',' ','p','r','e','c','e','e','d','e','d',' ','b','y',' ','-','-','.','\n',
+' ',' ',' ',' ',' ',' ',' ',' ','c','h','a','r','a','c','t','e','r',' ','p','r','e','c','e','d','e','d',' ','b','y',' ','a',' ','-',',',' ','o','r',' ','a',' ','n','a','m','e',' ','p','r','e','c','e','d','e','d',' ','b','y',' ','-','-','.','\n',
'\n',
' ',' ','-','?',' ',' ','.','.','.','.','.','.','.','.',' ',' ','-','-','h','e','l','p','\n',
' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','D','i','s','p','l','a','y',' ','h','e','l','p',' ','(','f','r','o','m',' ','c','o','m','m','a','n','d',' ','l','i','n','e',')','.','\n',
Modified: vendor/less/dist/less.hlp
==============================================================================
--- vendor/less/dist/less.hlp Mon May 13 04:47:26 2013 (r250589)
+++ vendor/less/dist/less.hlp Mon May 13 05:27:43 2013 (r250590)
@@ -107,7 +107,7 @@
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 --.
+ character preceded by a -, or a name preceded by --.
-? ........ --help
Display help (from command line).
Modified: vendor/less/dist/less.man
==============================================================================
--- vendor/less/dist/less.man Mon May 13 04:47:26 2013 (r250589)
+++ vendor/less/dist/less.man Mon May 13 05:27:43 2013 (r250590)
@@ -444,58 +444,61 @@ LESS(1)
LESS="Dn9.1$Ds4.1"
- A dollar sign or backslash may be included literally in an option
- string by preceding it with a backslash.
+ If the --use-backslash option appears earlier in the options, then a
+ dollar sign or backslash may be included literally in an option string
+ by preceding it with a backslash. If the --use-backslash option is not
+ in effect, then backslashes are not treated specially, and there is no
+ way to include a dollar sign in the option string.
-? or --help
- This option displays a summary of the commands accepted by [4mless[0m
- (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 [4mless[0m
+ (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
- By default, forward searches start at the top of the displayed
- screen and backwards searches start at the bottom of the dis-
- played screen (except for repeated searches invoked by the n or
- N commands, which start after or before the "target" line
+ By default, forward searches start at the top of the displayed
+ screen and backwards searches start at the bottom of the dis-
+ played screen (except for repeated searches invoked by the n or
+ N commands, which start after or before the "target" line
respectively; see the -j option for more about the target line).
- The -a option causes forward searches to instead start at the
- bottom of the screen and backward searches to start at the top
+ The -a option causes forward searches to instead start at the
+ bottom of the screen and backward searches to start at the top
of the screen, thus skipping all lines displayed on the screen.
-A or --SEARCH-SKIP-SCREEN
- Causes all forward searches (not just non-repeated searches) to
- start just after the target line, and all backward searches to
- start just before the target line. Thus, forward searches will
+ Causes all forward searches (not just non-repeated searches) to
+ start just after the target line, and all backward searches to
+ start just before the target line. Thus, forward searches will
skip part of the displayed screen (from the first line up to and
- including the target line). Similarly backwards searches will
+ including the target line). Similarly backwards searches will
skip the displayed screen from the last line up to and including
the target line. This was the default behavior in less versions
prior to 441.
-b[4mn[24m or --buffers=[4mn[0m
- Specifies the amount of buffer space [4mless[24m 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 [4mn[0m
+ Specifies the amount of buffer space [4mless[24m 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 [4mn[0m
kilobytes of buffer space should be used for each file. If [4mn[24m 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-
+ the pipe, this can cause a large amount of memory to be allo-
cated. The -B option disables this automatic allocation of buf-
- fers for pipes, so that only 64K (or the amount of space speci-
+ fers for pipes, so that only 64K (or the amount of space speci-
fied 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
+ 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
@@ -503,24 +506,24 @@ 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 [4mless[24m on a
+ -d option does not otherwise change the behavior of [4mless[24m on a
dumb terminal.
-D[1mx[4m[22mcolor[24m or --color=[1mx[4m[22mcolor[0m
[MS-DOS only] Sets the color of the text displayed. [1mx [22mis 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.
- [4mcolor[24m 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 [4mN[24m is the same as
+ gle character which selects the type of text whose color is
+ being set: n=normal, s=standout, d=bold, u=underlined, k=blink.
+ [4mcolor[24m 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 [4mN[24m is the same as
[4mN.M[24m, where [4mM[24m is the normal background color.
-e or --quit-at-eof
- Causes [4mless[24m to automatically exit the second time it reaches
- end-of-file. By default, the only way to exit [4mless[24m is via the
+ Causes [4mless[24m to automatically exit the second time it reaches
+ end-of-file. By default, the only way to exit [4mless[24m is via the
"q" command.
-E or --QUIT-AT-EOF
@@ -529,7 +532,7 @@ 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, [4mless[24m 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.
@@ -539,236 +542,236 @@ LESS(1)
played on the first screen.
-g or --hilite-search
- Normally, [4mless[24m 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, [4mless[24m 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 [4mless[24m 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.
-h[4mn[24m or --max-back-scroll=[4mn[0m
- 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 [4mn[24m 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.
-j[4mn[24m or --jump-target=[4mn[0m
- 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,
- and backward searches begin at the target line, unless changed
- by -a or -A. For example, if "-j4" is used, the target line is
- the fourth line on the screen, so forward searches begin at the
+ 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, unless changed
+ by -a or -A. 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.
-k[4mfilename[24m or --lesskey-file=[4mfilename[0m
- Causes [4mless[24m to open and interpret the named file as a [4mlesskey[0m
+ Causes [4mless[24m to open and interpret the named file as a [4mlesskey[0m
(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 [4mlesskey[24m file.
-K or --quit-on-intr
- Causes [4mless[24m to exit immediately (with status 2) when an inter-
- rupt character (usually ^C) is typed. Normally, an interrupt
+ Causes [4mless[24m to exit immediately (with status 2) when an inter-
+ rupt character (usually ^C) is typed. Normally, an interrupt
character causes [4mless[24m to stop whatever it is doing and return to
- its command prompt. Note that use of this option makes it
+ 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 PRE-
- PROCESSOR section below). This option can be set from within
- [4mless[24m, but it will apply only to files opened subsequently, not
+ Ignore the LESSOPEN environment variable (see the INPUT PRE-
+ PROCESSOR section below). This option can be set from within
+ [4mless[24m, but it will apply only to files opened subsequently, not
to the file which is currently open.
-m or --long-prompt
- Causes [4mless[24m to prompt verbosely (like [4mmore[24m), with the percent
+ Causes [4mless[24m to prompt verbosely (like [4mmore[24m), with the percent
into the file. By default, [4mless[24m prompts with a colon.
-M or --LONG-PROMPT
Causes [4mless[24m to prompt even more verbosely than [4mmore.[0m
-n or --line-numbers
- Suppresses line numbers. The default (to use line numbers) may
- cause [4mless[24m 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 [4mless[24m 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.
-o[4mfilename[24m or --log-file=[4mfilename[0m
- Causes [4mless[24m to copy its input to the named file as it is being
+ Causes [4mless[24m 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, [4mless[24m will ask for
+ ordinary file. If the file already exists, [4mless[24m will ask for
confirmation before overwriting it.
-O[4mfilename[24m or --LOG-FILE=[4mfilename[0m
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 [4mless[24m 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 [4mless[24m 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 [4mless.[0m
-p[4mpattern[24m or --pattern=[4mpattern[0m
- The -p option on the command line is equivalent to specifying
- +/[4mpattern[24m; that is, it tells [4mless[24m to start at the first occur-
+ The -p option on the command line is equivalent to specifying
+ +/[4mpattern[24m; that is, it tells [4mless[24m to start at the first occur-
rence of [4mpattern[24m in the file.
-P[4mprompt[24m or --prompt=[4mprompt[0m
- 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 [4mless[24m 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
+ 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, [4mless[24m 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 [4mless[24m 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 [4mless[24m 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 [4mless[24m 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 [4mless[24m 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 [4mnroff[24m output.
-S or --chop-long-lines
- Causes lines longer than the screen width to be chopped (trun-
+ Causes lines longer than the screen width to be chopped (trun-
cated) rather than wrapped. That is, the portion of a long line
that does not fit in the screen width is not shown. The default
- is to wrap long lines; that is, display the remainder on the
+ is to wrap long lines; that is, display the remainder on the
next line.
-t[4mtag[24m or --tag=[4mtag[0m
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 [4mctags[24m (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 [4mglobal[24m (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 [4mglobal[24m (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 [4mless[24m (using the -
- command) as a way of examining a new file. The command ":t" is
+ -t option may also be specified from within [4mless[24m (using the -
+ command) as a way of examining a new file. The command ":t" is
equivalent to specifying -t from within [4mless.[0m
-T[4mtagsfile[24m or --tag-file=[4mtagsfile[0m
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 [4mless.[0m
-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
+ 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
@@ -776,48 +779,48 @@ LESS(1)
forward movement command larger than one line.
-x[4mn[24m,... or --tabs=[4mn[24m,...
- Sets tab stops. If only one [4mn[24m is specified, tab stops are set
- at multiples of [4mn[24m. 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,
- [4m-x9,17[24m will set tabs at positions 9, 17, 25, 33, etc. The
+ Sets tab stops. If only one [4mn[24m is specified, tab stops are set
+ at multiples of [4mn[24m. 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,
+ [4m-x9,17[24m will set tabs at positions 9, 17, 25, 33, etc. The
default for [4mn[24m 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.
-y[4mn[24m or --max-forw-scroll=[4mn[0m
Specifies a maximum number of lines to scroll forward. If it is
- necessary to scroll forward more than [4mn[24m 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 [4mn[24m 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][4mn[24m or --window=[4mn[0m
- Changes the default scrolling window size to [4mn[24m lines. The
+ Changes the default scrolling window size to [4mn[24m 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 [4mmore.[24m If the number [4mn[24m is negative,
- it indicates [4mn[24m lines less than the current screen size. For
+ it indicates [4mn[24m lines less than the current screen size. For
example, if the screen is 24 lines, [4m-z-4[24m 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.
-[4m"cc[24m or --quotes=[4mcc[0m
- 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
@@ -827,60 +830,67 @@ 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. Alternately, the number may be speci-
- fied as a fraction of the width of the screen, starting with a
- decimal point: .5 is half of the screen width, .3 is three
- tenths of the screen width, and so on. If the number is speci-
- fied as a fraction, the actual number of scroll positions is
- recalculated if the terminal window is resized, so that the
- actual scroll remains at the specified fraction of the screen
+ fied as a fraction of the width of the screen, starting with a
+ decimal point: .5 is half of the screen width, .3 is three
+ tenths of the screen width, and so on. If the number is speci-
+ fied as a fraction, the actual number of scroll positions is
+ recalculated if the terminal window is resized, so that the
+ actual scroll remains at the specified fraction of the screen
width.
+ --follow-name
+ Normally, if the input file is renamed while an F command is
+ executing, [4mless[24m will continue to display the contents of the
+ original file despite its name change. If --follow-name is
+ specified, during an F command [4mless[24m 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
+ renamed) file), [4mless[24m will display the contents of that new file.
+
--no-keypad
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, [4mless[24m will continue to display the contents of the
- original file despite its name change. If --follow-name is
- specified, during an F command [4mless[24m 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
- renamed) file), [4mless[24m will display the contents of that new file.
+ --use-backslash
+ This option changes the interpretations of options which follow
+ this one. After the --use-backslash option, any backslash in an
+ option string is removed and the following character is taken
+ literally. This allows a dollar sign to be included in option
+ strings.
- -- 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 [1m+[22m, the remainder of that
- option is taken to be an initial command to [4mless.[24m For example,
- +G tells [4mless[24m 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 [1m+[22m, the remainder of that
+ option is taken to be an initial command to [4mless.[24m For example,
+ +G tells [4mless[24m 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.
[1mLINE EDITING[0m
- 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. (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
+ 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 ]
@@ -890,7 +900,7 @@ LESS(1)
Move the cursor one space to the right.
^LEFTARROW [ ESC-b or ESC-LEFTARROW ]
- (That is, CONTROL and LEFTARROW simultaneously.) Move the cur-
+ (That is, CONTROL and LEFTARROW simultaneously.) Move the cur-
sor one word to the left.
^RIGHTARROW [ ESC-w or ESC-RIGHTARROW ]
@@ -904,48 +914,48 @@ LESS(1)
Move the cursor to the end of the line.
BACKSPACE
- Delete the character to the left of the cursor, or cancel the
+ Delete the character to the left of the cursor, or cancel the
command if the command line is empty.
DELETE or [ ESC-x ]
Delete the character under the cursor.
^BACKSPACE [ ESC-BACKSPACE ]
- (That is, CONTROL and BACKSPACE simultaneously.) Delete the
+ (That is, CONTROL and BACKSPACE simultaneously.) Delete the
word to the left of the cursor.
^DELETE [ ESC-X or ESC-DELETE ]
- (That is, CONTROL and DELETE simultaneously.) Delete the word
+ (That is, CONTROL and DELETE simultaneously.) Delete the word
under the cursor.
UPARROW [ ESC-k ]
- Retrieve the previous command line. If you first enter some
- text and then press UPARROW, it will retrieve the previous com-
+ Retrieve the previous command line. If you first enter some
+ text and then press UPARROW, it will retrieve the previous com-
mand which begins with that text.
DOWNARROW [ ESC-j ]
- Retrieve the next command line. If you first enter some text
- and then press DOWNARROW, it will retrieve the next command
+ Retrieve the next command line. If you first enter some text
+ and then press DOWNARROW, it will retrieve the next command
which begins with that text.
- TAB Complete the partial filename to the left of the cursor. If it
- matches more than one filename, the first match is entered into
- the command line. Repeated TABs will cycle thru the other
+ TAB Complete the partial filename to the left of the cursor. If it
+ matches more than one filename, the first match is entered into
+ the command line. Repeated TABs will cycle thru the other
matching filenames. If the completed filename is a directory, a
- "/" is appended to the filename. (On MS-DOS systems, a "\" is
- appended.) The environment variable LESSSEPARATOR can be used
+ "/" is appended to the filename. (On MS-DOS systems, a "\" is
+ appended.) The environment variable LESSSEPARATOR can be used
to specify a different character to append to a directory name.
BACKTAB [ ESC-TAB ]
Like, TAB, but cycles in the reverse direction thru the matching
filenames.
- ^L Complete the partial filename to the left of the cursor. If it
+ ^L Complete the partial filename to the left of the cursor. If it
matches more than one filename, all matches are entered into the
command line (if they fit).
^U (Unix and OS/2) or ESC (MS-DOS)
- Delete the entire command line, or cancel the command if the
+ Delete the entire command line, or cancel the command if the
command line is empty. If you have changed your line-kill char-
acter in Unix to something other than ^U, that character is used
instead of ^U.
@@ -954,72 +964,72 @@ LESS(1)
[1mKEY BINDINGS[0m
- You may define your own [4mless[24m commands by using the program [4mlesskey[24m (1)
- to create a lesskey file. This file specifies a set of command keys
- and an action associated with each key. You may also use [4mlesskey[24m to
+ You may define your own [4mless[24m commands by using the program [4mlesskey[24m (1)
+ to create a lesskey file. This file specifies a set of command keys
+ and an action associated with each key. You may also use [4mlesskey[24m to
change the line-editing keys (see LINE EDITING), and to set environment
- variables. If the environment variable LESSKEY is set, [4mless[24m uses that
- as the name of the lesskey file. Otherwise, [4mless[24m looks in a standard
- place for the lesskey file: On Unix systems, [4mless[24m looks for a lesskey
- file called "$HOME/.less". On MS-DOS and Windows systems, [4mless[24m looks
- for a lesskey file called "$HOME/_less", and if it is not found there,
+ variables. If the environment variable LESSKEY is set, [4mless[24m uses that
+ as the name of the lesskey file. Otherwise, [4mless[24m looks in a standard
+ place for the lesskey file: On Unix systems, [4mless[24m looks for a lesskey
+ file called "$HOME/.less". On MS-DOS and Windows systems, [4mless[24m looks
+ for a lesskey file called "$HOME/_less", and if it is not found there,
then looks for a lesskey file called "_less" in any directory specified
- in the PATH environment variable. On OS/2 systems, [4mless[24m looks for a
- lesskey file called "$HOME/less.ini", and if it is not found, then
- looks for a lesskey file called "less.ini" in any directory specified
+ in the PATH environment variable. On OS/2 systems, [4mless[24m looks for a
+ lesskey file called "$HOME/less.ini", and if it is not found, then
+ looks for a lesskey file called "less.ini" in any directory specified
in the INIT environment variable, and if it not found there, then looks
- for a lesskey file called "less.ini" in any directory specified in the
- PATH environment variable. See the [4mlesskey[24m manual page for more
+ for a lesskey file called "less.ini" in any directory specified in the
+ PATH environment variable. See the [4mlesskey[24m manual page for more
details.
- A system-wide lesskey file may also be set up to provide key bindings.
+ A system-wide lesskey file may also be set up to provide key bindings.
If a key is defined in both a local lesskey file and in the system-wide
- file, key bindings in the local file take precedence over those in the
- system-wide file. If the environment variable LESSKEY_SYSTEM is set,
+ file, key bindings in the local file take precedence over those in the
+ system-wide file. If the environment variable LESSKEY_SYSTEM is set,
[4mless[24m uses that as the name of the system-wide lesskey file. Otherwise,
- [4mless[24m looks in a standard place for the system-wide lesskey file: On
- Unix systems, the system-wide lesskey file is /usr/local/etc/sysless.
- (However, if [4mless[24m was built with a different sysconf directory than
+ [4mless[24m looks in a standard place for the system-wide lesskey file: On
+ Unix systems, the system-wide lesskey file is /usr/local/etc/sysless.
+ (However, if [4mless[24m was built with a different sysconf directory than
/usr/local/etc, that directory is where the sysless file is found.) On
- MS-DOS and Windows systems, the system-wide lesskey file is c:\_sys-
+ MS-DOS and Windows systems, the system-wide lesskey file is c:\_sys-
less. On OS/2 systems, the system-wide lesskey file is c:\sysless.ini.
[1mINPUT PREPROCESSOR[0m
- You may define an "input preprocessor" for [4mless.[24m Before [4mless[24m opens a
+ You may define an "input preprocessor" for [4mless.[24m Before [4mless[24m opens a
file, it first gives your input preprocessor a chance to modify the way
- the contents of the file are displayed. An input preprocessor is sim-
- ply an executable program (or shell script), which writes the contents
+ the contents of the file are displayed. An input preprocessor is sim-
+ ply an executable program (or shell script), which writes the contents
of the file to a different file, called the replacement file. The con-
- tents of the replacement file are then displayed in place of the con-
- tents of the original file. However, it will appear to the user as if
- the original file is opened; that is, [4mless[24m will display the original
+ tents of the replacement file are then displayed in place of the con-
+ tents of the original file. However, it will appear to the user as if
+ the original file is opened; that is, [4mless[24m will display the original
filename as the name of the current file.
- An input preprocessor receives one command line argument, the original
- filename, as entered by the user. It should create the replacement
- file, and when finished, print the name of the replacement file to its
- standard output. If the input preprocessor does not output a replace-
- ment filename, [4mless[24m uses the original file, as normal. The input pre-
- processor is not called when viewing standard input. To set up an
- input preprocessor, set the LESSOPEN environment variable to a command
- line which will invoke your input preprocessor. This command line
- should include one occurrence of the string "%s", which will be
- replaced by the filename when the input preprocessor command is
+ An input preprocessor receives one command line argument, the original
+ filename, as entered by the user. It should create the replacement
+ file, and when finished, print the name of the replacement file to its
+ standard output. If the input preprocessor does not output a replace-
+ ment filename, [4mless[24m uses the original file, as normal. The input pre-
+ processor is not called when viewing standard input. To set up an
+ input preprocessor, set the LESSOPEN environment variable to a command
+ line which will invoke your input preprocessor. This command line
+ should include one occurrence of the string "%s", which will be
+ replaced by the filename when the input preprocessor command is
invoked.
When [4mless[24m closes a file opened in such a way, it will call another pro-
- gram, called the input postprocessor, which may perform any desired
- clean-up action (such as deleting the replacement file created by
+ gram, called the input postprocessor, which may perform any desired
+ clean-up action (such as deleting the replacement file created by
LESSOPEN). This program receives two command line arguments, the orig-
- inal filename as entered by the user, and the name of the replacement
- file. To set up an input postprocessor, set the LESSCLOSE environment
- variable to a command line which will invoke your input postprocessor.
- It may include two occurrences of the string "%s"; the first is
- replaced with the original name of the file and the second with the
+ inal filename as entered by the user, and the name of the replacement
+ file. To set up an input postprocessor, set the LESSCLOSE environment
+ variable to a command line which will invoke your input postprocessor.
+ It may include two occurrences of the string "%s"; the first is
+ replaced with the original name of the file and the second with the
name of the replacement file, which was output by LESSOPEN.
- For example, on many Unix systems, these two scripts will allow you to
+ For example, on many Unix systems, these two scripts will allow you to
keep files in compressed format, but still let [4mless[24m view them directly:
lessopen.sh:
@@ -1038,25 +1048,25 @@ LESS(1)
#! /bin/sh
rm $2
- To use these scripts, put them both where they can be executed and set
+ To use these scripts, put them both where they can be executed and set
LESSOPEN="lessopen.sh %s", and LESSCLOSE="lessclose.sh %s %s". More
- complex LESSOPEN and LESSCLOSE scripts may be written to accept other
+ complex LESSOPEN and LESSCLOSE scripts may be written to accept other
types of compressed files, and so on.
- It is also possible to set up an input preprocessor to pipe the file
- data directly to [4mless,[24m rather than putting the data into a replacement
+ It is also possible to set up an input preprocessor to pipe the file
+ data directly to [4mless,[24m rather than putting the data into a replacement
file. This avoids the need to decompress the entire file before start-
ing to view it. An input preprocessor that works this way is called an
- input pipe. An input pipe, instead of writing the name of a replace-
- ment file on its standard output, writes the entire contents of the
- replacement file on its standard output. If the input pipe does not
- write any characters on its standard output, then there is no replace-
- ment file and [4mless[24m uses the original file, as normal. To use an input
- pipe, make the first character in the LESSOPEN environment variable a
- vertical bar (|) to signify that the input preprocessor is an input
+ input pipe. An input pipe, instead of writing the name of a replace-
+ ment file on its standard output, writes the entire contents of the
+ replacement file on its standard output. If the input pipe does not
+ write any characters on its standard output, then there is no replace-
+ ment file and [4mless[24m uses the original file, as normal. To use an input
+ pipe, make the first character in the LESSOPEN environment variable a
+ vertical bar (|) to signify that the input preprocessor is an input
pipe.
- For example, on many Unix systems, this script will work like the pre-
+ For example, on many Unix systems, this script will work like the pre-
vious example scripts:
lesspipe.sh:
@@ -1071,30 +1081,30 @@ LESS(1)
To use this script, put it where it can be executed and set
LESSOPEN="|lesspipe.sh %s".
- Note that a preprocessor cannot output an empty file, since that is
- interpreted as meaning there is no replacement, and the original file
+ Note that a preprocessor cannot output an empty file, since that is
+ interpreted as meaning there is no replacement, and the original file
is used. To avoid this, if LESSOPEN starts with two vertical bars, the
- exit status of the script becomes meaningful. If the exit status is
- zero, the output is considered to be replacement text, even if it
- empty. If the exit status is nonzero, any output is ignored and the
- original file is used. For compatibility with previous versions of
+ exit status of the script becomes meaningful. If the exit status is
+ zero, the output is considered to be replacement text, even if it
+ empty. If the exit status is nonzero, any output is ignored and the
+ original file is used. For compatibility with previous versions of
[4mless,[24m if LESSOPEN starts with only one vertical bar, the exit status of
the preprocessor is ignored.
- When an input pipe is used, a LESSCLOSE postprocessor can be used, but
+ When an input pipe is used, a LESSCLOSE postprocessor can be used, but
it is usually not necessary since there is no replacement file to clean
- up. In this case, the replacement file name passed to the LESSCLOSE
+ up. In this case, the replacement file name passed to the LESSCLOSE
postprocessor is "-".
- For compatibility with previous versions of [4mless,[24m the input preproces-
+ For compatibility with previous versions of [4mless,[24m the input preproces-
sor or pipe is not used if [4mless[24m is viewing standard input. However, if
- the first character of LESSOPEN is a dash (-), the input preprocessor
- is used on standard input as well as other files. In this case, the
- dash is not considered to be part of the preprocessor command. If
+ the first character of LESSOPEN is a dash (-), the input preprocessor
+ is used on standard input as well as other files. In this case, the
+ dash is not considered to be part of the preprocessor command. If
standard input is being viewed, the input preprocessor is passed a file
- name consisting of a single dash. Similarly, if the first two charac-
- ters of LESSOPEN are vertical bar and dash (|-) or two vertical bars
- and a dash (||-), the input pipe is used on standard input as well as
+ name consisting of a single dash. Similarly, if the first two charac-
+ ters of LESSOPEN are vertical bar and dash (|-) or two vertical bars
+ and a dash (||-), the input pipe is used on standard input as well as
other files. Again, in this case the dash is not considered to be part
of the input pipe command.
@@ -1106,25 +1116,25 @@ 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
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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