Steve Kondik | ae271bc | 2015-11-15 02:50:53 +0100 | [diff] [blame^] | 1 | .\"*************************************************************************** |
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| 29 | .\" $Id: tabs.1,v 1.11 2013/06/22 18:11:57 tom Exp $ |
| 30 | .TH @TABS@ 1 "" |
| 31 | .ds n 5 |
| 32 | .SH NAME |
| 33 | \fB@TABS@\fR \- set tabs on a terminal |
| 34 | .SH SYNOPSIS |
| 35 | \fB@TABS@\fR [\fIoptions\fR]] \fI[tabstop-list]\fR |
| 36 | .SH DESCRIPTION |
| 37 | .PP |
| 38 | The \fB@TABS@\fP program clears and sets tab-stops on the terminal. |
| 39 | This uses the terminfo \fIclear_all_tabs\fP and \fIset_tab\fP capabilities. |
| 40 | If either is absent, \fB@TABS@\fP is unable to clear/set tab-stops. |
| 41 | The terminal should be configured to use hard tabs, e.g., |
| 42 | .sp |
| 43 | .RS |
| 44 | stty tab0 |
| 45 | .RE |
| 46 | .SH OPTIONS |
| 47 | .SS General Options |
| 48 | .TP 5 |
| 49 | .BI \-T "name" |
| 50 | Tell \fB@TABS@\fP which terminal type to use. |
| 51 | If this option is not given, \fB@TABS@\fP will use the \fB$TERM\fP |
| 52 | environment variable. |
| 53 | If that is not set, it will use the \fIansi+tabs\fP entry. |
| 54 | .TP 5 |
| 55 | .B \-d |
| 56 | The debugging option shows a ruler line, followed by two data lines. |
| 57 | The first data line shows the expected tab-stops marked with asterisks. |
| 58 | The second data line shows the actual tab-stops, marked with asterisks. |
| 59 | .TP 5 |
| 60 | .B \-n |
| 61 | This option tells \fB@TABS@\fP to check the options and run any debugging |
| 62 | option, but not to modify the terminal settings. |
| 63 | .TP |
| 64 | \fB\-V\fR |
| 65 | reports the version of ncurses which was used in this program, and exits. |
| 66 | .PP |
| 67 | The \fB@TABS@\fP program processes a single list of tab stops. |
| 68 | The last option to be processed which defines a list is the one that |
| 69 | determines the list to be processed. |
| 70 | .SS Implicit Lists |
| 71 | Use a single number as an option, e.g., "\fB\-5\fP" to set tabs at the given |
| 72 | interval (in this case 1, 6, 11, 16, 21, etc.). Tabs are repeated up to |
| 73 | the right margin of the screen. |
| 74 | .PP |
| 75 | Use "\fB\-0\fP" to clear all tabs. |
| 76 | .PP |
| 77 | Use "\fB\-8\fP" to set tabs to the standard interval. |
| 78 | .SS Explicit Lists |
| 79 | An explicit list can be defined after the options (this does not use a "\-"). |
| 80 | The values in the list must be in increasing numeric order, and greater than |
| 81 | zero. They are separated by a comma or a blank, for example, |
| 82 | .sp |
| 83 | .RS |
| 84 | tabs 1,6,11,16,21 |
| 85 | .br |
| 86 | tabs 1 6 11 16 21 |
| 87 | .RE |
| 88 | Use a '+' to treat a number as an increment relative to the previous value, |
| 89 | e.g., |
| 90 | .sp |
| 91 | .RS |
| 92 | tabs 1,+5,+5,+5,+5 |
| 93 | .RE |
| 94 | which is equivalent to the 1,6,11,16,21 example. |
| 95 | .SS Predefined Tab-Stops |
| 96 | X/Open defines several predefined lists of tab stops. |
| 97 | .TP 5 |
| 98 | .B \-a |
| 99 | Assembler, IBM S/370, first format |
| 100 | .TP 5 |
| 101 | .B \-a2 |
| 102 | Assembler, IBM S/370, second format |
| 103 | .TP 5 |
| 104 | .B \-c |
| 105 | COBOL, normal format |
| 106 | .TP 5 |
| 107 | .B \-c2 |
| 108 | COBOL compact format |
| 109 | .TP 5 |
| 110 | .B \-c3 |
| 111 | COBOL compact format extended |
| 112 | .TP 5 |
| 113 | .B \-f |
| 114 | FORTRAN |
| 115 | .TP 5 |
| 116 | .B \-p |
| 117 | PL/I |
| 118 | .TP 5 |
| 119 | .B \-s |
| 120 | SNOBOL |
| 121 | .TP 5 |
| 122 | .B \-u |
| 123 | UNIVAC 1100 Assembler |
| 124 | .SH PORTABILITY |
| 125 | .PP |
| 126 | X/Open describes a \fB+m\fP option, to set a terminal's left-margin. |
| 127 | Very few of the entries in the terminal database provide this capability. |
| 128 | .PP |
| 129 | The \fB\-d\fP (debug) and \fB\-n\fP (no-op) options are extensions not provided |
| 130 | by other implementations. |
| 131 | .PP |
| 132 | Documentation for other implementations states that there is a limit on the |
| 133 | number of tab stops. While some terminals may not accept an arbitrary number |
| 134 | of tab stops, this implementation will attempt to set tab stops up to the |
| 135 | right margin of the screen, if the given list happens to be that long. |
| 136 | .SH SEE ALSO |
| 137 | \fB@TSET@\fR(1), |
| 138 | \fB@INFOCMP@\fR(1M), |
| 139 | \fBcurses\fR(3X), |
| 140 | \fBterminfo\fR(\*n). |
| 141 | .PP |
| 142 | This describes \fBncurses\fR |
| 143 | version @NCURSES_MAJOR@.@NCURSES_MINOR@ (patch @NCURSES_PATCH@). |