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article(YODL - or, Yet Oneother Document Language)
(Karel Kubat tt(karel@icce.rug.nl))
(1996)
quote(This file double-serves as the announcement that goes to
em(comp.os.linux.announce), and as a message to the maintainers of
em(sunsite.unc.edu) and em(tsx-11.mit.edu). So it's a slightly unpersonal
message... sorry 'bout that.
What's more, this message is in the YODL document language. What better
way to demonstrate? If you see a lot of parentheses, just read over them.
This file in `source' format should be readable nevertheless.)
nsect(What's YODL?)
YODL (Yet Oneother Document Language) is a package that consists of
programs, some shell scripts, and auxiliary "lib" files for which hold
macro files. The whole purpose of the package is to provide a
simple-to-use and extensible document language, that can be used to
convert documents in the YODL format to a variety of other formats. In
this purpose, YODL somewhat resembles generic markup languages, e.g. SGML
footnote(Standard Generalized Markup Language) but:
nsubsect(How easy to use is it?)
YODL is easier to use. Well I find so. Typing parentheses is I think
less work than typing <> or \{}.
nsubsect(How good is the documentation?)
YODL is very well documented. That my version of SGML isn't is, I
guess, no fault of SGML, but I had a bf(very) hard time getting SGML
to do what I wanted it to do! Well, YODL should be easier to handle.
The docs include various manpages and a full document of approximately
60 DIN A4 pages. (If you don't like DIN A4, just make your own
reference docs! The sources for the document, of course in YODL
format, are included.)
nsubsect(Does it use tags?)
YODL doesn't insist on weird tags. YODL is not a markup language in
that sense (starting and ending tags), YODL handles all its commands
in a C-style manner; e.g. tt(em(...)) will set the text emphasized.
Similarly, macros can have two arguments or more, also all in a
parameter-list format. This is more of an advantage than you might
think at first glance: e.g., my editor won't match a closing tag in
HTML with the opening tag, but it bf(will) show the open-parenthesis
when I type a closing parenthesis!
nsubsect(Does it have conditional parsing?)
YODL has support for conditional processing: by testing for some
symbol, or say for the presence of an argument, you can do different
things in a macro. Or you can redefine macros, and the such.
nsubsect(What can it do?)
Currently the package supports conversions to LaTeX, HTML, to the
"man" format, to the "ms" format, and poor-mans conversions to plain
ASCII and SGML (for compatibility reasons at our site). Other
conversions are of course possible, but these are the formats that I
use and hence the converters that I put some effort into.
nsect(Where to get it?)
If you want to obtain YODL and try it out, ftp to
ftp://ftp.icce.rug.nl/pub/unix/ and look for a file yodl-X.YY.tar.gz, with
X.YY being a version number (0.00 is of course the first). The YODL
distribution is also on the `standard' Linux sites.
Unpack it in a "sources" directory and type "make htmldoc" or "make
latexdoc" and see for yourself...
nsect(Last remarks)
YODL has evolved from the previous DOM package, that I developed but
didn't distribute yet. DOM used to be "DOcument Maintainer", but I don't
think that the nomenclature was too good. (Besides, I can now use ".yo"
for file extensions ;-)
YODL is currently beta-state, that means that it may not be very complete
(but I'm working on it), that there may be bugs in it (not that I know
of), and that new versions may arrive quickly. Yes, I am looking for
testers! If you're interested, get YODL and mail me what you think.
Just for fun, at the end the same document is included, but converted to
plain ASCII via the "groff -ms" route. Well, that's all, I hope that I've
tickled your curiosity!
Karel.
YODL - or, Yet Oneother Document Language
Karel Kubat karel@icce.rug.nl
1996
This file double-serves as the announcement that goes
to comp.os.linux.announce, and as a message to the
maintainers of sunsite.unc.edu and tsx-11.mit.edu. So
it's a slightly unpersonal message... sorry 'bout that.
What's more, this message is in the YODL document lan-
guage. What better way to demonstrate? If you see a lot
of parentheses, just read over them. This file in
`source' format should be readable nevertheless.
What's YODL?
YODL (Yet Oneother Document Language) is a package that
consists of programs, some shell scripts, and auxiliary
"lib" files for which hold macro files. The whole pur-
pose of the package is to provide a simple-to-use and
extensible document language, that can be used to con-
vert documents in the YODL format to a variety of other
formats. In this purpose, YODL somewhat resembles
generic markup languages, e.g. SGML [1] but:
How easy to use is it?
YODL is easier to use. Well I find so. Typing parenthe-
ses is I think less work than typing <> or \{}.
How good is the documentation?
YODL is very well documented. That my version of SGML
isn't is, I guess, no fault of SGML, but I had a very
hard time getting SGML to do what I wanted it to do!
Well, YODL should be easier to handle. The docs
include various manpages and a full document of approx-
imately 60 DIN A4 pages. (If you don't like DIN A4,
just make your own reference docs! The sources for the
-----------
[1] Standard Generalized Markup Language
-2-
document, of course in YODL format, are included.)
Does it use tags?
YODL doesn't insist on weird tags. YODL is not a markup
language in that sense (starting and ending tags), YODL
handles all its commands in a C-style manner; e.g.
em(...) will set the text emphasized. Similarly,
macros can have two arguments or more, also all in a
parameter-list format. This is more of an advantage
than you might think at first glance: e.g., my editor
won't match a closing tag in HTML with the opening tag,
but it will show the open-parenthesis when I type a
closing parenthesis!
Does it have conditional parsing?
YODL has support for conditional processing: by testing
for some symbol, or say for the presence of an argu-
ment, you can do different things in a macro. Or you
can redefine macros, and the such.
What can it do?
Currently the package supports conversions to LaTeX,
HTML, to the "man" format, to the "ms" format, and
poor-mans conversions to plain ASCII and SGML (for com-
patibility reasons at our site). Other conversions are
of course possible, but these are the formats that I
use and hence the converters that I put some effort
into.
Where to get it?
If you want to obtain YODL and try it out, ftp to
ftp://ftp.icce.rug.nl/pub/unix/ and look for a file
yodl-X.YY.tar.gz, with X.YY being a version number
(0.00 is of course the first). The YODL distribution is
also on the `standard' Linux sites.
Unpack it in a "sources" directory and type "make html-
doc" or "make latexdoc" and see for yourself...
-3-
Last remarks
YODL has evolved from the previous DOM package, that I
developed but didn't distribute yet. DOM used to be
"DOcument Maintainer", but I don't think that the
nomenclature was too good. (Besides, I can now use
".yo" for file extensions ;-)
YODL is currently beta-state, that means that it may
not be very complete (but I'm working on it), that
there may be bugs in it (not that I know of), and that
new versions may arrive quickly. Yes, I am looking for
testers! If you're interested, get YODL and mail me
what you think.
Just for fun, at the end the same document is included,
but converted to plain ASCII via the "groff -ms" route.
Well, that's all, I hope that I've tickled your curios-
ity!
Karel.