$OpenBSD: deroff.1,v 1.5 2003/06/10 09:12:10 jmc Exp $
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@(#)deroff.1 8.1 (Berkeley) 6/6/93
.Dd June 6, 1993 .Dt DEROFF 1 .Os .Sh NAME .Nm deroff .Nd remove nroff/troff, eqn, pic and tbl constructs .Sh SYNOPSIS .Nm deroff .Op Fl ikpw .Oo .Fl m .Ar a | e | l | m | s .Oc .Op Ar .Sh DESCRIPTION .Nm deroff reads each file in sequence and removes all .Xr nroff 1 and .Xr troff 1 command lines, backslash constructions, macro definitions, .Xr eqn 1 constructs (between .Dq .EQ and .Dq .EN lines or between delimiters), .Xr pic 1 pictures, and table descriptions and writes the remainder to the standard output. .Nm follows chains of included files
o .Dq .so and .Dq .nx commands
c ; if a file has already been included, a .Dq .so is ignored and a .Dq .nx terminates execution. If no input file is given, .Nm reads from the standard input.
p The options are as follows: l -tag -width Ds t Fl i Ignore .Dq .so and .Dq .nx commands. t Fl k Keep blocks of text intact. This is the default behavior unless the .Fl m option is given. t Fl m Enable support for common macro packages. The .Fl m option takes the following arguments: l -tag -width Ds -offset indent -compact t a recognize .Xr man 7 macros. t e recognize .Xr me 7 macros. t l remove list constructs. t m recognize .Xr mm 7 macros. t s recognize .Xr ms 7 macros. .El t Fl p Preserve paragraph macros. This option only has an effect if the .Fl m option is also specified. t Fl w Output a word list, one .Sq word (string of letters, digits, and apostrophes, beginning with a letter; apostrophes are removed) per line, and all other characters ignored. Normally, the output follows the original, with the deletions mentioned above. .El .Sh SEE ALSO .Xr eqn 1 , .Xr nroff 1 , .Xr pic 1 , .Xr tbl 1 , .Xr troff 1 .Sh HISTORY .Nm appeared in .At v7 . .Sh BUGS .Nm is not a complete .Xr troff 1 interpreter, so it can be confused by subtle constructs. Most errors result in too much rather than too little output.
p The .Fl ml option does not correctly handle nested lists.