Ubuntu Manpage: nowebfilters - filters and parsers for use with noweb

NAME

       nowebfilters - filters and parsers for use with noweb

SYNOPSIS

       [noweave|notangle|noweb] [-filter filter|-markup parser] ...

DESCRIPTION

       This man page documents the various filters and parsers that are supplied with noweb(1).  A filter, which
       transforms the pipeline representation, is used with the -filter option.  A parser, which reads a  source
       file and emits the pipeline representation, is used with the -markup option.  Not all filters and parsers
       are available at all installations.

FILTERS

autodefs.*
noweave's -autodefs and -showautodefs options use these filters, which automatically find defined
identifiers. The * stands for the name of a programming language. (Icon installation only.)

btdefn The btdefn filter uses Dave Hanson's convention to mark definitions. In code chunks, each
defining instances of an identifier should be preceded by a single backtick character (ASCII 140).
The btdefn filter removes these backticks from the code and converts them to definitions, thus:
`definition. It, not @ %def, should be used with both notangle(1) and noweave(1), at least for
programs written in C-like languages.

disambiguate
The disambiguate filter makes it possible to abbreviate chunk names using a trailing ellipsis
(three periods), in the style of WEB and nuweb(1).

docs2comments options
The docs2comments filter converts documentation chunks to comments in code chunks. Options
include -all, which converts all documentation chunks into comments; -one converts only one
documentation chunk preceding each code chunk. The -wk option formats comments k columns wide.

Other options control the language and style of the comment. Languages available include -awk,
-c, -c++, -f77, -f90, -icn, -icon, -lisp, -m3, -ml, -ocamlweb, -pascal, -scm, and -tex.

Norman recommends using notangle(1) with docstocomments instead of nountangle(1). (Icon
installation only.)

elide patterns
The elide filter removes from the stream any code chunk matching any of the arguments. Each
argument is a pattern in which ? matches any single character and * matches any sequence of
characters.

emptydefn
The emptydefn filter makes an empty definition (<<>>=) an abbreviation for a continuation of the
previous definition.

l2h [-show-unknowns]
The l2h filter converts LaTeX to HTML in documentation chunks. If the -show-unknowns options is
given, unrecognized LaTeX control sequences appear in bold in the output. l2h uses the LaTeX-
generated .toc and .bbl files to help create table of contents and bibliography. (Icon
installation only.)

pipedocs command
The pipedocs filter runs each documentation chunk through an invocation of command, which may be
any Unix command. The Noweb library includes the command h2a, which uses lynx(1) to convert HTML
to ASCII.

xchunks files
The xchunks filter pulls in code chunks from an external source. The files argument lists one or
more noweb files, which are used only for their definitions of code chunks. Empty chunk
definitions in the main document are replaced with the external definitions of the same name.
This filter makes it possible to include the same code chunks in multiple documents, or even the
same code chunks multiple times in the same document. (Icon installation only.)

PARSERS

       A parser converts a source file to the noweb pipeline format, interpreting the ``markup'' in  that  file.
       By  default,  the tools use the standard noweb markup, but some installations may support nuweb markup as
       well.  Parsers include

       markup Converts standard noweb(1) markup to pipeline format.

       numarkup
              Converts nuweb(1) markup to noweb pipeline format.  It is not part of the  standard  installation,
              but it can be found in noweb's contrib/norman directory.

FILES

       All filters and parsers are stored in /usr/lib/noweb

BUGS

       It  is  possible  to  tell  l2h  about  new  control  sequences  by putting special TeX comments in one's
       documentation chunks, but there's no documentation.  Use the source, Luke.

       numarkup loses information, e.g., about the proper treatment of tabs.  It  also  doesn't  compensate  for
       notangle's  newline-removal  heuristic,  which  means results on nuweb files may differ subtly from those
       produced by nuweb.

       Many filters are not available in installations that use Awk instead of Icon.

VERSION

       This man page is from noweb version 2.11b.

AUTHOR

       Norman Ramsey, Harvard University.  Internet address nr@eecs.harvard.edu.
       Noweb home page at http://www.eecs.harvard.edu/~nr/noweb.

                                                 local 3/28/2001                                        NOWEB(7)