deroff(1)deroff(1)NAMEderoff - remove nroff, tbl, and neqn constructs
x] [file ...]
reads each file in sequence and removes all requests, macro calls,
backslash constructs, constructs (between and lines, and between delim‐
iters — see neqn(1)), and descriptions (see tbl(1)), replacing them
with white space (blanks and blank lines), and writes the remainder of
the file on the standard output. follows chains of included files and
formatter commands); if a file has already been included, a naming that
file is ignored and a naming that file terminates execution. If no
input file is given, reads the standard input.
The option can be followed by an or The option causes the macros be
interpreted such that only running text is output (that is, no text
from macro lines). The option forces the option and also causes dele‐
tion of lists associated with the macros.
If the option is given, the output is a word list, one ``word'' per
line, with all other characters deleted. Otherwise, the output follows
the original, with the deletions mentioned above. In text, a ``word''
is any multi-byte character string or any string that contains at least
two letters and is composed of letters, digits, ampersands and apostro‐
phes In a macro call, however, a ``word'' is a multi-byte character
string or a string that begins with at least two letters and contains a
total of at least three letters. Delimiters are any characters other
than letters, digits, apostrophes, and ampersands. Trailing apostro‐
phes and ampersands are removed from ``words.''
If the option is specified, ignores the and commands.
determines the interpretation of text and filenames as single and/or
multi-byte characters. Note that multi-byte punctuation characters are
not recognized when using the option.
determines the language in which messages are displayed.
If or is not specified in the environment or is set to the empty
string, the value of is used as a default for each unspecified or empty
variable. If is not specified or is set to the empty string, a default
of "C" (see lang(5)) is used instead of
If any internationalization variable contains an invalid setting,
behaves as if all internationalization variables are set to "C". See
International Code Set Support
Single- and multi-byte character code sets are supported.
is not a complete interpreter; thus it can be confused by subtle con‐
structs. Most such errors result in too much rather than too little
The option does not handle nested lists correctly.
was developed by the University of California, Berkeley.
SEE ALSOneqn(1), nroff(1), tbl(1).