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| author | Xin LI <delphij@FreeBSD.org> | 2007-06-04 01:42:54 +0000 |
|---|---|---|
| committer | Xin LI <delphij@FreeBSD.org> | 2007-06-04 01:42:54 +0000 |
| commit | 7f074f9c8f37a841d4ed3a3947143d83c9972f81 (patch) | |
| tree | ee770081db4ef1d4b6022e0608a222ea35319caa /contrib/less/less.man | |
| parent | 6dcb072b3021f88118ab758d851d01be270f36b2 (diff) | |
| download | src-7f074f9c8f37a841d4ed3a3947143d83c9972f81.tar.gz src-7f074f9c8f37a841d4ed3a3947143d83c9972f81.zip | |
/home/delphij/m
Notes
Notes:
svn path=/vendor/less/dist/; revision=170256
Diffstat (limited to 'contrib/less/less.man')
| -rw-r--r-- | contrib/less/less.man | 621 |
1 files changed, 328 insertions, 293 deletions
diff --git a/contrib/less/less.man b/contrib/less/less.man index 8548f5500244..18a1227f02cd 100644 --- a/contrib/less/less.man +++ b/contrib/less/less.man @@ -2,39 +2,39 @@ LESS(1) LESS(1) -NNAAMMEE +[1mNAME[0m less - opposite of more -SSYYNNOOPPSSIISS - lleessss --?? - lleessss ----hheellpp - lleessss --VV - lleessss ----vveerrssiioonn - lleessss [[--[[++]]aaBBccCCddeeEEffFFggGGiiIIJJKKLLmmMMnnNNqqQQrrRRssSSuuUUVVwwWWXX~~]] - [[--bb _s_p_a_c_e]] [[--hh _l_i_n_e_s]] [[--jj _l_i_n_e]] [[--kk _k_e_y_f_i_l_e]] - [[--{{ooOO}} _l_o_g_f_i_l_e]] [[--pp _p_a_t_t_e_r_n]] [[--PP _p_r_o_m_p_t]] [[--tt _t_a_g]] - [[--TT _t_a_g_s_f_i_l_e]] [[--xx _t_a_b,,......]] [[--yy _l_i_n_e_s]] [[--[[zz]] _l_i_n_e_s]] - [[--## _s_h_i_f_t]] [[++[[++]]_c_m_d]] [[----]] [[_f_i_l_e_n_a_m_e]]...... +[1mSYNOPSIS[0m + [1mless -?[0m + [1mless --help[0m + [1mless -V[0m + [1mless --version[0m + [1mless [-[+]aBcCdeEfFgGiIJKLmMnNqQrRsSuUVwWX~][0m + [1m[-b [4m[22mspace[24m[1m] [-h [4m[22mlines[24m[1m] [-j [4m[22mline[24m[1m] [-k [4m[22mkeyfile[24m[1m][0m + [1m[-{oO} [4m[22mlogfile[24m[1m] [-p [4m[22mpattern[24m[1m] [-P [4m[22mprompt[24m[1m] [-t [4m[22mtag[24m[1m][0m + [1m[-T [4m[22mtagsfile[24m[1m] [-x [4m[22mtab[24m[1m,...] [-y [4m[22mlines[24m[1m] [-[z] [4m[22mlines[24m[1m][0m + [1m[-# [4m[22mshift[24m[1m] [+[+][4m[22mcmd[24m[1m] [--] [[4m[22mfilename[24m[1m]...[0m (See the OPTIONS section for alternate option syntax with long option names.) -DDEESSCCRRIIPPTTIIOONN - _L_e_s_s is a program similar to _m_o_r_e (1), but which allows backward move- - ment in the file as well as forward movement. Also, _l_e_s_s does not have +[1mDESCRIPTION[0m + [4mLess[24m is a program similar to [4mmore[24m (1), but which allows backward move- + ment in the file as well as forward movement. Also, [4mless[24m does not have to read the entire input file before starting, so with large input - files it starts up faster than text editors like _v_i (1). _L_e_s_s uses + files it starts up faster than text editors like [4mvi[24m (1). [4mLess[24m uses termcap (or terminfo on some systems), so it can run on a variety of terminals. There is even limited support for hardcopy terminals. (On a hardcopy terminal, lines which should be printed at the top of the screen are prefixed with a caret.) - Commands are based on both _m_o_r_e and _v_i_. Commands may be preceded by a + Commands are based on both [4mmore[24m and [4mvi.[24m Commands may be preceded by a decimal number, called N in the descriptions below. The number is used by some commands, as indicated. -CCOOMMMMAANNDDSS +[1mCOMMANDS[0m In the following descriptions, ^X means control-X. ESC stands for the ESCAPE key; for example ESC-v means the two character sequence "ESCAPE", then "v". @@ -117,7 +117,9 @@ CCOOMMMMAANNDDSS and standard input, rather than a file, is being read.) p or % Go to a position N percent into the file. N should be between 0 - and 100. + and 100, and may contain a decimal point. + + P Go to the line containing byte offset N in the file. { If a left curly bracket appears in the top line displayed on the screen, the { command will go to the matching right curly @@ -193,8 +195,8 @@ CCOOMMMMAANNDDSS options. ^K Highlight any text which matches the pattern on the cur- - rent screen, but don't move to the first match (KEEP cur- - rent position). + rent screen, but don't move to the first match (KEEP + current position). ^R Don't interpret regular expression metacharacters; that is, do a simple textual comparison. @@ -320,8 +322,8 @@ CCOOMMMMAANNDDSS -+ 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 + describing the new setting. (The "-+[4mX[24m" command does the same + thing as "-+[4mX[24m" on the command line.) This does not work for string-valued options. --+ Like the -+ command, but takes a long option name rather than a @@ -344,13 +346,13 @@ CCOOMMMMAANNDDSS press RETURN after typing the option name. +cmd Causes the specified cmd to be executed each time a new file is - examined. For example, +G causes _l_e_s_s to initially display each + examined. For example, +G causes [4mless[24m to initially display each file starting at the end rather than the beginning. - V Prints the version number of _l_e_s_s being run. + V Prints the version number of [4mless[24m being run. q or Q or :q or :Q or ZZ - Exits _l_e_s_s_. + Exits [4mless.[0m The following four commands may or may not be valid, depending on your particular installation. @@ -385,9 +387,9 @@ CCOOMMMMAANNDDSS pipe, not an ordinary file. -OOPPTTIIOONNSS +[1mOPTIONS[0m Command line options are described below. Most options may be changed - while _l_e_s_s is running, via the "-" command. + while [4mless[24m 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 @@ -395,17 +397,17 @@ OOPPTTIIOONNSS 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 - letter capitalized; the remainder of the name may be in either case. - For example, --Quit-at-eof is equivalent to --QUIT-AT-EOF. + 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- - ple, to avoid typing "less -options ..." each time _l_e_s_s is invoked, you - might tell _c_s_h_: + ple, to avoid typing "less -options ..." each time [4mless[24m is invoked, you + might tell [4mcsh:[0m setenv LESS "-options" - or if you use _s_h_: + or if you use [4msh:[0m LESS="-options"; export LESS @@ -426,7 +428,7 @@ OOPPTTIIOONNSS -? or --help - This option displays a summary of the commands accepted by _l_e_s_s + 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: "-\?".) @@ -437,12 +439,12 @@ OOPPTTIIOONNSS default, searches start at the second line on the screen (or after the last found line; see the -j option). - -b_n or --buffers=_n - Specifies the amount of buffer space _l_e_s_s will use for each + -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 _n - kilobytes of buffer space should be used for each file. If _n is + 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 is read into memory. @@ -463,58 +465,58 @@ OOPPTTIIOONNSS from the bottom of the screen. -C or --CLEAR-SCREEN - The -C option is like -c, but the screen is cleared before it is - repainted. + Same as -c, for compatibility with older versions of [4mless.[0m -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 _l_e_s_s on a + -d option does not otherwise change the behavior of [4mless[24m on a dumb terminal. - -Dxx_c_o_l_o_r or --color=xx_c_o_l_o_r - [MS-DOS only] Sets the color of the text displayed. xx 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. - _c_o_l_o_r 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. + -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 + [4mN.0[24m. -e or --quit-at-eof - Causes _l_e_s_s to automatically exit the second time it reaches - end-of-file. By default, the only way to exit _l_e_s_s 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 - Causes _l_e_s_s to automatically exit the first time it reaches end- + Causes [4mless[24m to automatically exit the first time it reaches end- of-file. -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- - ing message when a binary file is opened. By default, _l_e_s_s will - refuse to open non-regular files. + 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. -F or --quit-if-one-screen - Causes _l_e_s_s to automatically exit if the entire file can be dis- + Causes [4mless[24m to automatically exit if the entire file can be dis- played on the first screen. -g or --hilite-search - Normally, _l_e_s_s will highlight ALL strings which match 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 _l_e_s_s to run somewhat faster than + 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 search commands. - -h_n or --max-back-scroll=_n + -h[4mn[24m or --max-back-scroll=[4mn[0m Specifies a maximum number of lines to scroll backward. If it - is necessary to scroll backward more than _n lines, the screen is + 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.) @@ -529,19 +531,25 @@ OOPPTTIIOONNSS Like -i, but searches ignore case even if the pattern contains uppercase letters. - -j_n or --jump-target=_n + -j[4mn[24m or --jump-target=[4mn[0m Specifies a line on the screen where the "target" line is to be positioned. A target line is the object of a text search, tag search, jump to a line number, jump to a file percentage, or - jump to a marked position. The screen line is specified by a - number: the top line on the screen is 1, the next is 2, and so + jump to a marked position. The screen line may be specified 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 relative to the bottom of the screen: the bottom line on the screen is -1, - the second to the bottom is -2, and so on. If the -j option is - used, searches begin at the line immediately after the target - line. For example, if "-j4" is used, the target line is the - fourth line on the screen, so searches begin at the fifth line - on the screen. + 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 the -j option is used, searches begin at the + line immediately after the target line. For example, if "-j4" + is used, the target line is the fourth line on the screen, so + 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 @@ -549,35 +557,35 @@ OOPPTTIIOONNSS The status column is also used if the -w or -W option is in effect. - -k_f_i_l_e_n_a_m_e or --lesskey-file=_f_i_l_e_n_a_m_e - Causes _l_e_s_s to open and interpret the named file as a _l_e_s_s_k_e_y + -k[4mfilename[24m or --lesskey-file=[4mfilename[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 file is found in a standard place (see KEY BINDINGS), it is also - used as a _l_e_s_s_k_e_y file. + used as a [4mlesskey[24m file. -K or --quit-on-intr - Causes _l_e_s_s to exit immediately when an interrupt character + Causes [4mless[24m to exit immediately when an interrupt character (usually ^C) is typed. Normally, an interrupt character causes - _l_e_s_s to stop whatever it is doing and return to its command + [4mless[24m to stop whatever it is doing and return to its command prompt. -L or --no-lessopen Ignore the LESSOPEN environment variable (see the INPUT PREPRO- - CESSOR section below). This option can be set from within _l_e_s_s, + CESSOR 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 _l_e_s_s to prompt verbosely (like _m_o_r_e), with the percent - into the file. By default, _l_e_s_s prompts with a colon. + 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 _l_e_s_s to prompt even more verbosely than _m_o_r_e_. + 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 _l_e_s_s to run more slowly in some cases, especially with a + 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 = @@ -589,30 +597,30 @@ OOPPTTIIOONNSS Causes a line number to be displayed at the beginning of each line in the display. - -o_f_i_l_e_n_a_m_e or --log-file=_f_i_l_e_n_a_m_e - Causes _l_e_s_s to copy its input to the named file as it is being + -o[4mfilename[24m or --log-file=[4mfilename[0m + 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, _l_e_s_s will ask for + ordinary file. If the file already exists, [4mless[24m will ask for confirmation before overwriting it. - -O_f_i_l_e_n_a_m_e or --LOG-FILE=_f_i_l_e_n_a_m_e + -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 _l_e_s_s to specify a log file. Without a file + 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 _l_e_s_s_. + command is equivalent to specifying -o from within [4mless.[0m - -p_p_a_t_t_e_r_n or --pattern=_p_a_t_t_e_r_n + -p[4mpattern[24m or --pattern=[4mpattern[0m The -p option on the command line is equivalent to specifying - +/_p_a_t_t_e_r_n; that is, it tells _l_e_s_s to start at the first occur- - rence of _p_a_t_t_e_r_n in the file. + +/[4mpattern[24m; that is, it tells [4mless[24m to start at the first occur- + rence of [4mpattern[24m in the file. - -P_p_r_o_m_p_t or --prompt=_p_r_o_m_p_t + -P[4mprompt[24m or --prompt=[4mprompt[0m 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 _l_e_s_s com- + 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 @@ -639,7 +647,7 @@ OOPPTTIIOONNSS Causes "raw" control characters to be displayed. The default is 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, _l_e_s_s cannot keep track of the actual + 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 responds to each type of control character). Thus, various dis- play problems may result, such as long lines being split in the @@ -656,17 +664,17 @@ OOPPTTIIOONNSS 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 _l_e_s_s think that characters other than "m" can end ANSI + 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 _l_e_s_s think that characters + 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 - blank line. This is useful when viewing _n_r_o_f_f output. + 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 rather @@ -674,20 +682,20 @@ OOPPTTIIOONNSS fit in the screen width is not shown. The default is to fold long lines; that is, display the remainder on the next line. - -t_t_a_g or --tag=_t_a_g + -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 - directory called "tags", which was previously built by _c_t_a_g_s (1) + 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 _g_l_o_b_a_l (1), and that command is executed to find the + 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 _l_e_s_s (using 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 - equivalent to specifying -t from within _l_e_s_s_. + equivalent to specifying -t from within [4mless.[0m - -T_t_a_g_s_f_i_l_e or --tag-file=_t_a_g_s_f_i_l_e + -T[4mtagsfile[24m or --tag-file=[4mtagsfile[0m Specifies a tags file to be used instead of "tags". -u or --underline-special @@ -713,7 +721,7 @@ OOPPTTIIOONNSS lined can be searched for if neither -u nor -U is in effect. -V or --version - Displays the version number of _l_e_s_s_. + Displays the version number of [4mless.[0m -w or --hilite-unread Temporarily highlights the first "new" line after a forward @@ -728,13 +736,13 @@ OOPPTTIIOONNSS Like -w, but temporarily highlights the first new line after any forward movement command larger than one line. - -x_n,... 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, - _-_x_9_,_1_7 will set tabs at positions 9, 17, 25, 33, etc. The - default for _n is 8. + -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 + continue 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 @@ -747,24 +755,24 @@ OOPPTTIIOONNSS strings to the terminal. This is sometimes useful if the keypad strings make the numeric keypad behave in an undesirable manner. - -y_n or --max-forw-scroll=_n + -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 _n lines, the screen 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 movement causes scrolling. - -[z]_n or --window=_n - Changes the default scrolling window size to _n lines. The + -[z][4mn[24m or --window=[4mn[0m + 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- - bility with _m_o_r_e_. If the number _n is negative, it indicates _n - lines less than the current screen size. For example, if the - screen is 24 lines, _-_z_-_4 sets the scrolling window to 20 lines. - If the screen is resized to 40 lines, the scrolling window auto- - matically changes to 36 lines. + 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 + 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 + scrolling window automatically changes to 36 lines. - -_"_c_c or --quotes=_c_c + -[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 @@ -794,9 +802,9 @@ OOPPTTIIOONNSS 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 _l_e_s_s_. For example, - +G tells _l_e_s_s to start at the end of the file rather than the + + 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 @@ -807,10 +815,10 @@ OOPPTTIIOONNSS tial command for every file. -LLIINNEE EEDDIITTIINNGG +[1mLINE EDITING[0m 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), - certain keys can be used to manipulate the command line. Most commands + 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- @@ -882,54 +890,54 @@ LLIINNEE EEDDIITTIINNGG instead of ^U. -KKEEYY BBIINNDDIINNGGSS - You may define your own _l_e_s_s commands by using the program _l_e_s_s_k_e_y (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 _l_e_s_s_k_e_y to + 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, _l_e_s_s uses that - as the name of the lesskey file. Otherwise, _l_e_s_s looks in a standard - place for the lesskey file: On Unix systems, _l_e_s_s looks for a lesskey - file called "$HOME/.less". On MS-DOS and Windows systems, _l_e_s_s looks + variables. If the environment variable LESSKEY is set, [4mless[24m uses that + as the name of the lesskey file. Otherwise, [4mless[24m looks in a standard + place for the lesskey file: On Unix systems, [4mless[24m looks for a lesskey + file called "$HOME/.less". On MS-DOS and Windows systems, [4mless[24m looks for a lesskey file called "$HOME/_less", and if it is not found there, then looks for a lesskey file called "_less" in any directory specified - in the PATH environment variable. On OS/2 systems, _l_e_s_s looks for a + in the PATH environment variable. On OS/2 systems, [4mless[24m looks for a lesskey file called "$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 _l_e_s_s_k_e_y manual page for more + 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. 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, - _l_e_s_s uses that as the name of the system-wide lesskey file. Otherwise, - _l_e_s_s looks in a standard place for the system-wide lesskey file: On + [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 _l_e_s_s was built with a different sysconf directory than + (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- less. On OS/2 systems, the system-wide lesskey file is c:\sysless.ini. -IINNPPUUTT PPRREEPPRROOCCEESSSSOORR - You may define an "input preprocessor" for _l_e_s_s_. Before _l_e_s_s opens a +[1mINPUT PREPROCESSOR[0m + 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 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, _l_e_s_s will display the original + 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, _l_e_s_s uses the original file, as normal. The input pre- + 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 @@ -937,7 +945,7 @@ IINNPPUUTT PPRREEPPRROOCCEESSSSOORR replaced by the filename when the input preprocessor command is invoked. - When _l_e_s_s closes a file opened in such a way, it will call another pro- + 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 LESSOPEN). This program receives two command line arguments, the orig- @@ -949,7 +957,7 @@ IINNPPUUTT PPRREEPPRROOCCEESSSSOORR name of the replacement file, which was output by LESSOPEN. For example, on many Unix systems, these two scripts will allow you to - keep files in compressed format, but still let _l_e_s_s view them directly: + keep files in compressed format, but still let [4mless[24m view them directly: lessopen.sh: #! /bin/sh @@ -973,14 +981,14 @@ IINNPPUUTT PPRREEPPRROOCCEESSSSOORR types of compressed files, and so on. It is also possible to set up an input preprocessor to pipe the file - data directly to _l_e_s_s_, rather than putting the data into a replacement + 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 _l_e_s_s uses the original file, as normal. To use an input + 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. @@ -1002,7 +1010,7 @@ IINNPPUUTT PPRREEPPRROOCCEESSSSOORR name passed to the LESSCLOSE postprocessor is "-". -NNAATTIIOONNAALL CCHHAARRAACCTTEERR SSEETTSS +[1mNATIONAL CHARACTER SETS[0m There are three types of characters in the input file: normal characters @@ -1048,26 +1056,29 @@ NNAATTIIOONNAALL CCHHAARRAACCTTEERR SSEETTSS next Selects a character set appropriate for NeXT computers. - utf-8 Selects the UTF-8 encoding of the ISO 10646 character set. + 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 _l_e_s_s to use a character - set other than the ones definable by LESSCHARSET. In this case, the + In special cases, it may be desired to tailor [4mless[24m 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 + 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 + 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 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 @@ -1081,66 +1092,66 @@ NNAATTIIOONNAALL CCHHAARRAACCTTEERR SSEETTSS 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 _s_e_t_l_o_c_a_l_e - interface, _l_e_s_s 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 [4msetlocale[0m + interface, [4mless[24m will use setlocale to determine the character set. + setlocale is controlled by setting the LANG or LC_CTYPE environment variables. - Finally, if the _s_e_t_l_o_c_a_l_e interface is also not available, the default + Finally, if the [4msetlocale[24m 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. -PPRROOMMPPTTSS - The -P option allows you to tailor the prompt to your preference. The - string given to the -P option replaces the specified prompt string. +[1mPROMPTS[0m + 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: - %b_X 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 + %b[4mX[24m Replaced by the byte offset into the current input file. The b + is followed by a single character (shown as [4mX[24m 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 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. @@ -1148,39 +1159,39 @@ PPRROOMMPPTTSS %c Replaced by the column number of the text appearing in the first column of the screen. - %d_X 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[4mX[24m Replaced by the page number of a line in the input file. The + line to be used is determined by the [4mX[24m, 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. - %l_X 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[4mX[24m Replaced by the line number of a line in the input file. The + line to be used is determined by the [4mX[24m, 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. - %p_X Replaced by the percent into the current input file, based on - byte offsets. The line used is determined by the _X as with the + %p[4mX[24m Replaced by the percent into the current input file, based on + byte offsets. The line used is determined by the [4mX[24m as with the %b option. - %P_X Replaced by the percent into the current input file, based on - line numbers. The line used is determined by the _X as with the + %P[4mX[24m Replaced by the percent into the current input file, based on + line numbers. The line used is determined by the [4mX[24m 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. @@ -1188,33 +1199,33 @@ PPRROOMMPPTTSS 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. - ?b_X True if the byte offset of the specified line is known. + ?b[4mX[24m True if the byte offset of the specified line is known. ?B True if the size of current input file is known. ?c True if the text is horizontally shifted (%c is not zero). - ?d_X True if the page number of the specified line is known. + ?d[4mX[24m True if the page number of the specified line is known. ?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). - ?l_X True if the line number of the specified line is known. + ?l[4mX[24m True if the line number of the specified line is known. ?L True if the line number of the last line in the file is known. @@ -1222,46 +1233,46 @@ PPRROOMMPPTTSS ?n True if this is the first prompt in a new input file. - ?p_X True if the percent into the current input file, based on byte + ?p[4mX[24m True if the percent into the current input file, based on byte offsets, of the specified line is known. - ?P_X True if the percent into the current input file, based on line + ?P[4mX[24m 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.: @@ -1275,22 +1286,22 @@ PPRROOMMPPTTSS ?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. -SSEECCUURRIITTYY - When the environment variable LESSSECURE is set to 1, _l_e_s_s runs in a +[1mSECURITY[0m + When the environment variable LESSSECURE is set to 1, [4mless[24m runs in a "secure" mode. This means these features are disabled: ! the shell command @@ -1314,32 +1325,56 @@ SSEECCUURRIITTYY Less can also be compiled to be permanently in "secure" mode. -EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS +[1mCOMPATIBILITY WITH MORE[0m + If the environment variable LESS_IS_MORE is set to 1, or if the program + is invoked via a file link named "more", [4mless[24m 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, [4mless[0m + behaves as if the -E option were set. If the -e option is set, [4mless[0m + 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--". + 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 + option is unavailable in this mode. + + The parameter to the -p option is taken to be a [4mless[24m command rather + than a search pattern. + + The LESS environment variable is ignored, and the MORE environment + variable is used in its place. + + +[1mENVIRONMENT VARIABLES[0m Environment variables may be specified either in the system environment - as usual, or in a _l_e_s_s_k_e_y (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 [4mlesskey[24m (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. @@ -1347,15 +1382,15 @@ EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS LC_CTYPE Language for determining the character set. - LESS Options which are passed to _l_e_s_s automatically. + LESS Options which are passed to [4mless[24m 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 @@ -1372,24 +1407,25 @@ EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS 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. - Normally should be set to "global" if your system has the _g_l_o_b_a_l + Name of the command used by the -t option to find global tags. + Normally should be set to "global" if your system has the [4mglobal[0m (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 _l_e_s_s_. If set to "-", 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. + Name of the history file used to remember search commands and + shell commands between invocations of [4mless.[24m 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 The maximum number of commands to save in the history file. The @@ -1424,6 +1460,9 @@ EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS LESSUTFBINFMT Format for displaying non-printable Unicode code points. + LESS_IS_MORE + Emulate the [4mmore[24m (1) command. + 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, @@ -1436,53 +1475,49 @@ EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS SHELL The shell used to execute the ! command, as well as to expand filenames. - TERM The type of terminal on which _l_e_s_s is being run. + TERM The type of terminal on which [4mless[24m is being run. VISUAL The name of the editor (used for the v command). -SSEEEE AALLSSOO +[1mSEE ALSO[0m lesskey(1) -WWAARRNNIINNGGSS +[1mWARNINGS[0m 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. - If the :e command is used to name more than one file, and one of the - named files has been viewed previously, the new files may be entered - into the list in an unexpected order. - 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 [4mless[24m 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- + 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.) - When viewing text containing ANSI color escape sequences using the -R - option, searching will not find text containing an embedded escape - sequence. Also, search highlighting may change the color of some of - the text which follows the highlighted text. - - On some systems, _s_e_t_l_o_c_a_l_e claims that ASCII characters 0 thru 31 are - control characters rather than binary characters. This causes _l_e_s_s to + On some systems, [4msetlocale[24m claims that ASCII characters 0 thru 31 are + control characters rather than binary characters. This causes [4mless[24m 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 list of known bugs in - all versions of less. + See http://www.greenwoodsoftware.com/less for the latest list of known + bugs in less. -CCOOPPYYRRIIGGHHTT - Copyright (C) 1984-2005 Mark Nudelman +[1mCOPYRIGHT[0m + Copyright (C) 1984-2007 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- @@ -1500,13 +1535,13 @@ CCOOPPYYRRIIGGHHTT more details. -AAUUTTHHOORR +[1mAUTHOR[0m Mark Nudelman <markn@greenwoodsoftware.com> - Send bug reports or comments to the above address or to bug- - less@gnu.org. - For more information, see the less homepage at http://www.greenwood- - software.com/less. + Send bug reports or comments to the above address or to + bug-less@gnu.org. + For more information, see the less homepage at + http://www.greenwoodsoftware.com/less. - Version 394: 03 Dec 2005 LESS(1) + Version 403: 25 May 2007 LESS(1) |