Virgin import of less v416.
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Xin LI
parent
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/vendor/less/dist/; revision=173932 svn path=/vendor/less/v416/; revision=173934; tag=vendor/less/v416
@ -13,7 +13,7 @@
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======================================================================
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Major changes between "less" versions 409 and 415
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Major changes between "less" versions 409 and 416
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* New --follow-name option makes F command follow the name of a file
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rather than the file descriptor if an open file is renamed.
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@ -1,7 +1,7 @@
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Less, version 415
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Less, version 416
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This is the distribution of less, version 415, released 15 Nov 2007.
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This is the distribution of less, version 416, released 22 Nov 2007.
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This program is part of the GNU project (http://www.gnu.org).
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This program is free software. You may redistribute it and/or
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@ -445,8 +445,8 @@ LESS(1) LESS(1)
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buffer space is used for each file (unless the file is a pipe;
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see the -B option). The -b option specifies instead that [4mn[0m
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kilobytes of buffer space should be used for each file. If [4mn[24m is
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-1, buffer space is unlimited; that is, the entire file is read
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into memory.
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-1, buffer space is unlimited; that is, the entire file can be
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read into memory.
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-B or --auto-buffers
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By default, when data is read from a pipe, buffers are allocated
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@ -456,8 +456,8 @@ LESS(1) LESS(1)
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buffers for pipes, so that only 64K (or the amount of space
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specified by the -b option) is used for the pipe. Warning: use
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of -B can result in erroneous display, since only the most
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recently viewed part of the file is kept in memory; any earlier
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data is lost.
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recently viewed part of the piped data is kept in memory; any
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earlier data is lost.
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-c or --clear-screen
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Causes full screen repaints to be painted from the top line
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@ -533,42 +533,44 @@ LESS(1) LESS(1)
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-j[4mn[24m or --jump-target=[4mn[0m
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Specifies a line on the screen where the "target" line is to be
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positioned. A target line is the object of a text search, tag
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search, jump to a line number, jump to a file percentage, or
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jump to a marked position. The screen line may be specified by
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a number: the top line on the screen is 1, the next is 2, and so
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on. The number may be negative to specify a line relative to
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the bottom of the screen: the bottom line on the screen is -1,
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the second to the bottom is -2, and so on. Alternately, the
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screen line may be specified as a fraction of the height of the
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screen, starting with a decimal point: .5 is in the middle of
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the screen, .3 is three tenths down from the first line, and so
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on. If the line is specified as a fraction, the actual line
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positioned. The target line is the line specified by any com-
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mand to search for a pattern, jump to a line number, jump to a
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file percentage or jump to a tag. The screen line may be speci-
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fied by a number: the top line on the screen is 1, the next is
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2, and so on. The number may be negative to specify a line rel-
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ative to the bottom of the screen: the bottom line on the screen
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is -1, the second to the bottom is -2, and so on. Alternately,
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the screen line may be specified as a fraction of the height of
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the screen, starting with a decimal point: .5 is in the middle
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of the screen, .3 is three tenths down from the first line, and
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so on. If the line is specified as a fraction, the actual line
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number is recalculated if the terminal window is resized, so
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that the target line remains at the specified fraction of the
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screen height. If the -j option is used, searches begin at the
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line immediately after the target line. For example, if "-j4"
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is used, the target line is the fourth line on the screen, so
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searches begin at the fifth line on the screen.
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screen height. If any form of the -j option is used, forward
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searches begin at the line immediately after the target line,
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and backward searches begin at the target line. For example, if
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"-j4" is used, the target line is the fourth line on the screen,
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so forward searches begin at the fifth line on the screen.
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-J or --status-column
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Displays a status column at the left edge of the screen. The
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status column shows the lines that matched the current search.
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The status column is also used if the -w or -W option is in
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Displays a status column at the left edge of the screen. The
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status column shows the lines that matched the current search.
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The status column is also used if the -w or -W option is in
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effect.
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-k[4mfilename[24m or --lesskey-file=[4mfilename[0m
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Causes [4mless[24m to open and interpret the named file as a [4mlesskey[0m
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Causes [4mless[24m to open and interpret the named file as a [4mlesskey[0m
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(1) file. Multiple -k options may be specified. If the LESSKEY
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or LESSKEY_SYSTEM environment variable is set, or if a lesskey
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or LESSKEY_SYSTEM environment variable is set, or if a lesskey
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file is found in a standard place (see KEY BINDINGS), it is also
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used as a [4mlesskey[24m file.
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-K or --quit-on-intr
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Causes [4mless[24m to exit immediately when an interrupt character
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(usually ^C) is typed. Normally, an interrupt character causes
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[4mless[24m to stop whatever it is doing and return to its command
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prompt.
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Causes [4mless[24m to exit immediately when an interrupt character
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(usually ^C) is typed. Normally, an interrupt character causes
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[4mless[24m to stop whatever it is doing and return to its command
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prompt. Note that use of this option makes it impossible to
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return to the command prompt from the "F" command.
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-L or --no-lessopen
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Ignore the LESSOPEN environment variable (see the INPUT PREPRO-
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@ -739,8 +741,8 @@ LESS(1) LESS(1)
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-x[4mn[24m,... or --tabs=[4mn[24m,...
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Sets tab stops. If only one [4mn[24m is specified, tab stops are set
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at multiples of [4mn[24m. If multiple values separated by commas are
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specified, tab stops are set at those positions, and then
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continue with the same spacing as the last two. For example,
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specified, tab stops are set at those positions, and then con-
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tinue with the same spacing as the last two. For example,
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[4m-x9,17[24m will set tabs at positions 9, 17, 25, 33, etc. The
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default for [4mn[24m is 8.
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@ -1159,10 +1161,10 @@ LESS(1) LESS(1)
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is followed by a single character (shown as [4mX[24m above) which spec-
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ifies the line whose byte offset is to be used. If the charac-
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ter is a "t", the byte offset of the top line in the display is
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used, an "m" means use the middle line, a "b" means use the
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bottom line, a "B" means use the line just after the bottom
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line, and a "j" means use the "target" line, as specified by the
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-j option.
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used, an "m" means use the middle line, a "b" means use the bot-
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tom line, a "B" means use the line just after the bottom line,
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and a "j" means use the "target" line, as specified by the -j
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option.
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%B Replaced by the size of the current input file.
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@ -1509,10 +1511,10 @@ LESS(1) LESS(1)
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expressions turned off via ^R, and also does not occur when [4mless[24m is
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compiled to use the PCRE regular expression library.
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In certain cases, when search highlighting is enabled and a search
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pattern begins with a ^, more text than the matching string may be
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highlighted. (This problem does not occur when less is compiled to use
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the POSIX regular expression package.)
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In certain cases, when search highlighting is enabled and a search pat-
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tern begins with a ^, more text than the matching string may be high-
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lighted. (This problem does not occur when less is compiled to use the
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POSIX regular expression package.)
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On some systems, [4msetlocale[24m claims that ASCII characters 0 thru 31 are
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control characters rather than binary characters. This causes [4mless[24m to
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@ -1554,4 +1556,4 @@ LESS(1) LESS(1)
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Version 415: 15 Nov 2007 LESS(1)
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Version 416: 22 Nov 2007 LESS(1)
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@ -1,4 +1,4 @@
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.TH LESS 1 "Version 415: 15 Nov 2007"
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.TH LESS 1 "Version 416: 22 Nov 2007"
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.SH NAME
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less \- opposite of more
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.SH SYNOPSIS
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@ -462,7 +462,7 @@ By default 64K of buffer space is used for each file
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The \-b option specifies instead that \fIn\fP kilobytes of
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buffer space should be used for each file.
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If \fIn\fP is \-1, buffer space is unlimited; that is,
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the entire file is read into memory.
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the entire file can be read into memory.
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.IP "\-B or \-\-auto-buffers"
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By default, when data is read from a pipe,
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buffers are allocated automatically as needed.
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@ -473,7 +473,7 @@ so that only 64K
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(or the amount of space specified by the \-b option)
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is used for the pipe.
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Warning: use of \-B can result in erroneous display, since only the
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most recently viewed part of the file is kept in memory;
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most recently viewed part of the piped data is kept in memory;
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any earlier data is lost.
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.IP "\-c or \-\-clear-screen"
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Causes full screen repaints to be painted from the top line down.
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@ -555,9 +555,9 @@ the pattern contains uppercase letters.
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.IP "\-j\fIn\fP or \-\-jump-target=\fIn\fP"
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Specifies a line on the screen where the "target" line
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is to be positioned.
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A target line is the object of a text search,
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tag search, jump to a line number,
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jump to a file percentage, or jump to a marked position.
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The target line is the line specified by any command to
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search for a pattern, jump to a line number,
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jump to a file percentage or jump to a tag.
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The screen line may be specified by a number: the top line on the screen
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is 1, the next is 2, and so on.
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The number may be negative to specify a line relative to the bottom
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@ -569,10 +569,11 @@ screen, .3 is three tenths down from the first line, and so on.
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If the line is specified as a fraction, the actual line number
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is recalculated if the terminal window is resized, so that the
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target line remains at the specified fraction of the screen height.
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If the \-j option is used, searches begin at the line immediately
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after the target line.
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If any form of the \-j option is used,
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forward searches begin at the line immediately after the target line,
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and backward searches begin at the target line.
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For example, if "\-j4" is used, the target line is the
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fourth line on the screen, so searches begin at the fifth line
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fourth line on the screen, so forward searches begin at the fifth line
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on the screen.
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.IP "\-J or \-\-status-column"
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Displays a status column at the left edge of the screen.
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@ -597,6 +598,8 @@ to exit immediately when an interrupt character (usually ^C) is typed.
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Normally, an interrupt character causes
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.I less
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to stop whatever it is doing and return to its command prompt.
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Note that use of this option makes it impossible to return to the
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command prompt from the "F" command.
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.IP "\-L or \-\-no-lessopen"
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Ignore the LESSOPEN environment variable
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(see the INPUT PREPROCESSOR section below).
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@ -46,4 +46,4 @@ LESSECHO(1) LESSECHO(1)
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Version 415: 15 Nov 2007 LESSECHO(1)
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Version 416: 22 Nov 2007 LESSECHO(1)
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@ -1,4 +1,4 @@
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.TH LESSECHO 1 "Version 415: 15 Nov 2007"
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.TH LESSECHO 1 "Version 416: 22 Nov 2007"
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.SH NAME
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lessecho \- expand metacharacters
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.SH SYNOPSIS
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@ -357,4 +357,4 @@ LESSKEY(1) LESSKEY(1)
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Version 415: 15 Nov 2007 LESSKEY(1)
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Version 416: 22 Nov 2007 LESSKEY(1)
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@ -1,4 +1,4 @@
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.TH LESSKEY 1 "Version 415: 15 Nov 2007"
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.TH LESSKEY 1 "Version 416: 22 Nov 2007"
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.SH NAME
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lesskey \- specify key bindings for less
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.SH SYNOPSIS
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@ -118,13 +118,16 @@ cvt_length(len, ops)
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int len;
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int ops;
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{
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if (utf_mode && (ops & CVT_TO_LC))
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if (utf_mode)
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/*
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* Converting case can cause a UTF-8 string to increase in length.
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* Multiplying by 3 is the worst case.
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* Just copying a string in UTF-8 mode can cause it to grow
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* in length.
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* Six output bytes for one input byte is the worst case
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* (and unfortunately is far more than is needed in any
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* non-pathological situation, so this is very wasteful).
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*/
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len *= 3;
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return len+1;
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len *= 6;
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return len + 1;
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}
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/*
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@ -701,6 +701,7 @@ v412 11/6/07 Use symbolic SEEK constants.
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v413 11/6/07 Fix search highlight bug with non-ASCII text.
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v414 11/6/07 Fix display bug with no-wrap terminals.
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v415 11/14/07 Add --follow-name option.
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v416 11/22/07 Fix crash when searching text with invalid UTF-8 sequences.
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*/
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char version[] = "415";
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char version[] = "416";
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