projects / unix-history / blame
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1 | .\" Copyright (c) 1980 Regents of the University of California. |
| 2 | .\" All rights reserved. The Berkeley software License Agreement | |
| 3 | .\" specifies the terms and conditions for redistribution. | |
| 4 | .\" | |
| 24fbc0bd | 5 | .\" @(#)expand.1 6.1 (Berkeley) %G% |
| 5451a149 | 6 | .\" |
| 24fbc0bd | 7 | .TH EXPAND 1 "" |
| 5451a149 KM |
8 | .UC 4 |
| 9 | .SH NAME | |
| 10 | expand, unexpand \- expand tabs to spaces, and vice versa | |
| 11 | .SH SYNOPSIS | |
| 12 | .B expand | |
| 13 | [ | |
| 14 | \-tabstop | |
| 15 | ] [ | |
| 16 | \-tab1,tab2,...,tabn | |
| 17 | ] [ | |
| 18 | file ... | |
| 19 | ] | |
| 20 | .br | |
| 21 | .B unexpand | |
| 22 | [ | |
| 23 | .B \-a | |
| 24 | ] [ | |
| 25 | file ... | |
| 26 | ] | |
| 27 | .SH DESCRIPTION | |
| 28 | .I Expand | |
| 29 | processes the named files or the standard input writing | |
| 30 | the standard output with tabs changed into blanks. | |
| 31 | Backspace characters are preserved into the output and decrement | |
| 32 | the column count for tab calculations. | |
| 33 | .I Expand | |
| 34 | is useful for pre-processing character files | |
| 35 | (before sorting, looking at specific columns, etc.) that | |
| 36 | contain tabs. | |
| 37 | .PP | |
| 38 | If a single | |
| 39 | .I tabstop | |
| 40 | argument is given then tabs are set | |
| 41 | .I tabstop | |
| 42 | spaces apart instead of the default 8. | |
| 43 | If multiple tabstops are given then the tabs are set at those | |
| 44 | specific columns. | |
| 45 | .PP | |
| 46 | .I Unexpand | |
| 47 | puts tabs back into the data from the standard input or the named | |
| 48 | files and writes the result on the standard output. | |
| 49 | By default only leading blanks and tabs | |
| 50 | are reconverted to maximal strings of tabs. If the | |
| 51 | .B \-a | |
| 52 | option is given, then tabs are inserted whenever they would compress the | |
| 53 | resultant file by replacing two or more characters. |