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diff --git a/doc/html/man/tabs.1.html b/doc/html/man/tabs.1.html index 8a785fc..0833c81 100644 --- a/doc/html/man/tabs.1.html +++ b/doc/html/man/tabs.1.html @@ -1,6 +1,6 @@ -<!-- +<!-- **************************************************************************** - * Copyright 2018-2019,2020 Thomas E. Dickey * + * Copyright 2018-2020,2021 Thomas E. Dickey * * Copyright 2008-2016,2017 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * @@ -27,7 +27,7 @@ * sale, use or other dealings in this Software without prior written * * authorization. * **************************************************************************** - * @Id: tabs.1,v 1.27 2020/02/02 23:34:34 tom Exp @ + * @Id: tabs.1,v 1.32 2021/10/16 13:37:43 tom Exp @ --> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML> @@ -63,20 +63,21 @@ stty tab0 Like <STRONG><A HREF="clear.1.html">clear(1)</A></STRONG>, <STRONG>tabs</STRONG> writes to the standard output. You can redirect - the standard output to a file (which prevents <STRONG>tabs</STRONG> from actually chang- - ing the tabstops), and later <STRONG>cat</STRONG> the file to the screen, setting tab- - stops at that point. - - These are hardware tabs, which cannot be queried rapidly by applica- - tions running in the terminal, if at all. Curses and other full-screen - applications may use hardware tabs in optimizing their output to the - terminal. If the hardware tabstops differ from the information in the - terminal database, the result is unpredictable. Before running curses - programs, you should either reset tab-stops to the standard interval + the standard output to a file (which prevents <STRONG>tabs</STRONG> from actually + changing the tabstops), and later <STRONG>cat</STRONG> the file to the screen, setting + tabstops at that point. + + These are hardware tabs, which cannot be queried rapidly by + applications running in the terminal, if at all. Curses and other + full-screen applications may use hardware tabs in optimizing their + output to the terminal. If the hardware tabstops differ from the + information in the terminal database, the result is unpredictable. + Before running curses programs, you should either reset tab-stops to + the standard interval tabs -8 - or use the <STRONG>reset</STRONG> program, since the normal initialization sequences do + or use the <STRONG>reset</STRONG> program, since the normal initialization sequences do not ensure that tab-stops are reset. @@ -84,29 +85,29 @@ </PRE><H3><a name="h3-General-Options">General Options</a></H3><PRE> <STRONG>-T</STRONG><EM>name</EM> - Tell <STRONG>tabs</STRONG> which terminal type to use. If this option is not - given, <STRONG>tabs</STRONG> will use the <STRONG>$TERM</STRONG> environment variable. If that is + Tell <STRONG>tabs</STRONG> which terminal type to use. If this option is not + given, <STRONG>tabs</STRONG> will use the <STRONG>$TERM</STRONG> environment variable. If that is not set, it will use the <EM>ansi+tabs</EM> entry. - <STRONG>-d</STRONG> The debugging option shows a ruler line, followed by two data - lines. The first data line shows the expected tab-stops marked - with asterisks. The second data line shows the actual tab-stops, + <STRONG>-d</STRONG> The debugging option shows a ruler line, followed by two data + lines. The first data line shows the expected tab-stops marked + with asterisks. The second data line shows the actual tab-stops, marked with asterisks. - <STRONG>-n</STRONG> This option tells <STRONG>tabs</STRONG> to check the options and run any debugging + <STRONG>-n</STRONG> This option tells <STRONG>tabs</STRONG> to check the options and run any debugging option, but not to modify the terminal settings. <STRONG>-V</STRONG> reports the version of ncurses which was used in this program, and exits. The <STRONG>tabs</STRONG> program processes a single list of tab stops. The last option - to be processed which defines a list is the one that determines the + to be processed which defines a list is the one that determines the list to be processed. </PRE><H3><a name="h3-Implicit-Lists">Implicit Lists</a></H3><PRE> - Use a single number as an option, e.g., "<STRONG>-5</STRONG>" to set tabs at the given - interval (in this case 1, 6, 11, 16, 21, etc.). Tabs are repeated up + Use a single number as an option, e.g., "<STRONG>-5</STRONG>" to set tabs at the given + interval (in this case 1, 6, 11, 16, 21, etc.). Tabs are repeated up to the right margin of the screen. Use "<STRONG>-0</STRONG>" to clear all tabs. @@ -115,15 +116,15 @@ </PRE><H3><a name="h3-Explicit-Lists">Explicit Lists</a></H3><PRE> - An explicit list can be defined after the options (this does not use a - "-"). The values in the list must be in increasing numeric order, and - greater than zero. They are separated by a comma or a blank, for exam- - ple, + An explicit list can be defined after the options (this does not use a + "-"). The values in the list must be in increasing numeric order, and + greater than zero. They are separated by a comma or a blank, for + example, tabs 1,6,11,16,21 tabs 1 6 11 16 21 - Use a "+" to treat a number as an increment relative to the previous + Use a "+" to treat a number as an increment relative to the previous value, e.g., tabs 1,+5,+5,+5,+5 @@ -132,57 +133,102 @@ </PRE><H3><a name="h3-Predefined-Tab-Stops">Predefined Tab-Stops</a></H3><PRE> - X/Open defines several predefined lists of tab stops. + POSIX defines several predefined lists of tab stops. <STRONG>-a</STRONG> Assembler, IBM S/370, first format + 1,10,16,36,72 <STRONG>-a2</STRONG> Assembler, IBM S/370, second format + 1,10,16,40,72 <STRONG>-c</STRONG> COBOL, normal format + 1,8,12,16,20,55 <STRONG>-c2</STRONG> COBOL compact format + 1,6,10,14,49 <STRONG>-c3</STRONG> COBOL compact format extended + 1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67 <STRONG>-f</STRONG> FORTRAN + 1,7,11,15,19,23 <STRONG>-p</STRONG> PL/I + 1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61 <STRONG>-s</STRONG> SNOBOL + 1,10,55 <STRONG>-u</STRONG> UNIVAC 1100 Assembler + 1,12,20,44 + + +</PRE><H3><a name="h3-Margins">Margins</a></H3><PRE> + A few terminals provide the capability for changing their left/right + margins. The tabs program has an option to use this feature: + + <STRONG>+m</STRONG> <EM>margin</EM> + The effect depends on whether the terminal has the margin + capabilities: + + <STRONG>o</STRONG> If the terminal provides the capability for setting the left + margin, tabs uses this, and adjusts the available width for + tab-stops. + + <STRONG>o</STRONG> If the terminal does not provide the margin capabilities, tabs + imitates the effect, putting the tab stops at the appropriate + place on each line. The terminal's left-margin is not + modified. + + If the <EM>margin</EM> parameter is omitted, the default is 10. Use <STRONG>+m0</STRONG> to + reset the left margin, i.e., to the left edge of the terminal's + display. Before setting a left-margin, tabs resets the margin to + reduce problems which might arise on moving the cursor before the + current left-margin. + + When setting or resetting the left-margin, tabs may reset the right- + margin. </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE> - <EM>IEEE</EM> <EM>Std</EM> <EM>1003.1/The</EM> <EM>Open</EM> <EM>Group</EM> <EM>Base</EM> <EM>Specifications</EM> <EM>Issue</EM> <EM>7</EM> + <EM>IEEE</EM> <EM>Std</EM> <EM>1003.1/The</EM> <EM>Open</EM> <EM>Group</EM> <EM>Base</EM> <EM>Specifications</EM> <EM>Issue</EM> <EM>7</EM> (POSIX.1-2008) describes a <STRONG>tabs</STRONG> utility. However - <STRONG>o</STRONG> This standard describes a <STRONG>+m</STRONG> option, to set a terminal's left-mar- - gin. Very few of the entries in the terminal database provide the - <STRONG>smgl</STRONG> (<STRONG>set_left_margin</STRONG>) or <STRONG>smglp</STRONG> (<STRONG>set_left_margin_parm</STRONG>) capability - needed to support the feature. + <STRONG>o</STRONG> This standard describes a <STRONG>+m</STRONG> option, to set a terminal's left- + margin. Very few of the entries in the terminal database provide + the <STRONG>smgl</STRONG> (<STRONG>set_left_margin</STRONG>) or <STRONG>smglp</STRONG> (<STRONG>set_left_margin_parm</STRONG>) + capability needed to support the feature. - <STRONG>o</STRONG> There is no counterpart in X/Open Curses Issue 7 for this utility, - unlike <STRONG>tput(1)</STRONG>. + <STRONG>o</STRONG> There is no counterpart in X/Open Curses Issue 7 for this utility, + unlike <STRONG><A HREF="tput.1.html">tput(1)</A></STRONG>. - The <STRONG>-d</STRONG> (debug) and <STRONG>-n</STRONG> (no-op) options are extensions not provided by + The <STRONG>-d</STRONG> (debug) and <STRONG>-n</STRONG> (no-op) options are extensions not provided by other implementations. - A <STRONG>tabs</STRONG> utility appeared in PWB/Unix 1.0 (1977). There was a reduced - version of the <STRONG>tabs</STRONG> utility in Unix 7th edition and in 3BSD (1979). - The latter supported a single "-n" option (to cause the first tab stop + A <STRONG>tabs</STRONG> utility appeared in PWB/Unix 1.0 (1977). There was a reduced + version of the <STRONG>tabs</STRONG> utility in Unix 7th edition and in 3BSD (1979). + The latter supported a single "-n" option (to cause the first tab stop to be set on the left margin). That option is not documented by POSIX. - The PWB/Unix <STRONG>tabs</STRONG> utility, which was included in System III (1980), - used built-in tables rather than the terminal database, to support a - half-dozen terminal types. It also had built-in logic to support the - left-margin, as well as a feature for copying the tab settings from a - file. - - Later versions of Unix, e.g., SVr4, added support for the terminal - database, but kept the tables, as a fallback. In an earlier develop- - ment effort, the tab-stop initialization provided by <STRONG>tset</STRONG> (1982) and - incorporated into <STRONG>tput</STRONG> uses the terminal database, + The PWB/Unix <STRONG>tabs</STRONG> utility, which was included in System III (1980), + used built-in tables rather than the terminal database, to support a + half-dozen hardcopy terminal (printer) types. It also had built-in + logic to support the left-margin, as well as a feature for copying the + tab settings from a file. + + Later versions of Unix, e.g., SVr4, added support for the terminal + database, but kept the tables to support the printers. In an earlier + development effort, the tab-stop initialization provided by <STRONG>tset</STRONG> (1982) + and incorporated into <STRONG>tput</STRONG> uses the terminal database, + + The <STRONG>+m</STRONG> option was documented in the Base Specifications Issue 5 + (Unix98, 1997), and omitted in Issue 6 (Unix03, 2004) without + documenting the rationale, though an introductory comment <EM>"and</EM> + <EM>optionally</EM> <EM>adjusts</EM> <EM>the</EM> <EM>margin"</EM> remains, overlooked in the removal. The + documented <STRONG>tabs</STRONG> utility in Issues 6 and later has no mechanism for + setting margins. The <STRONG>+m</STRONG> option in this implementation differs from the + feature in SVr4 by using terminal capabilities rather than built-in + tables. POSIX documents no limits on the number of tab stops. Documentation for other implementations states that there is a limit on the number of @@ -198,15 +244,15 @@ no known historical version of tabs supports the capability of setting arbitrary tab stops. - However, the <EM>Explicit</EM> <EM>Lists</EM> described in this manual page were imple- - mented in PWB/Unix. Those provide the capability of setting abitrary - tab stops. + However, the <EM>Explicit</EM> <EM>Lists</EM> described in this manual page were + implemented in PWB/Unix. Those provide the capability of setting + abitrary tab stops. </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE> - <STRONG><A HREF="tset.1.html">tset(1)</A></STRONG>, <STRONG><A HREF="infocmp.1m.html">infocmp(1m)</A></STRONG>, <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>. + <STRONG><A HREF="infocmp.1m.html">infocmp(1m)</A></STRONG>, <STRONG><A HREF="tset.1.html">tset(1)</A></STRONG>, <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>. - This describes <STRONG>ncurses</STRONG> version 6.2 (patch 20200212). + This describes <STRONG>ncurses</STRONG> version 6.3 (patch 20211021). @@ -223,6 +269,7 @@ <li><a href="#h3-Implicit-Lists">Implicit Lists</a></li> <li><a href="#h3-Explicit-Lists">Explicit Lists</a></li> <li><a href="#h3-Predefined-Tab-Stops">Predefined Tab-Stops</a></li> +<li><a href="#h3-Margins">Margins</a></li> </ul> </li> <li><a href="#h2-PORTABILITY">PORTABILITY</a></li> |