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*****************************************************************************
* The collection of the PL fonts (the Polish version of the *
* Computer Modern ones) in METAFONT source format *
* (public domain) *
*****************************************************************************
Authors
=======
Bogus\l{}aw Jackowski <B.Jackowski@gust.org.pl>
Marek Ry\'cko <marek@camk.edu.pl>
consultant: Roman Tomaszewski
see also GUST (Polish TeX Users Group) home page:
http://www.gust.org.pl
---------
SYNOPSIS:
---------
The following set of METAFONT sources for PL fonts (ver. 1.09 of
13 Apr 2001) is a part of MeX distribution and only EXCEPTIONALLY
is released as a separate package.
The reason for the release is a bug fix. Andreas Schwab and Joerg
Knappen found a nasty bug in PL fonts during their works on EC
family of fonts: the heights and italic corrections of the
accented characters depended on a given resolution. Unfortunately,
the check sum in TFM files depends only on character widths,
therefore the bug escaped fixing for a long time.
In the corrected version, accented characters are processed twice
(see macro `beginchar_twice' in pl_dod.mf): during the first pass,
all drawing operations (fill, draw, cull, etc.) are neutralized --
the result of the first pass are merely character dimensions (hopefully,
resolution-independent ;-); during the second pass, the glyph is
eventually created.
The documentation below is an excerpt from mexinfo.eng---the documentation
of MeX package (CTAN:/language/polish/mex*).
PL fonts
========
The PL fonts were primarly designed for use with the MeX and LaMeX formats
(Polish versions of the PLAIN and LaTeX209 macro files). Nowadays PL fonts
can also be used with `PLaTeX' package (CTAN:/language/polish/platex*)
that provides tools to typeset documents in Polish using LaTeX2e.
This was a main reason to put them in the separate package.
1. The Polish diacritical letters and quotation marks
-----------------------------------------------------
There are nine diacritical letters in the Polish language (altogether
with majuscules---eighteen):
a with ogonek
c with acute accent
e with ogonek
l with cross
n with acute accent
o with acute accent
s with acute accent
z with acute accent
z with dot accent
Moreover, the Polish opening quotation mark is like English
closing one, but shifted to a baseline (like two commas, `,,');
additionally, in case of nested quotations, French quotation marks
(`<<' and `>>') are used.
2. The PL layout
----------------
The Polish fonts (PL) are extension of Computer Modern
fonts (CM), i.e., characters 0--127 are identical in PL and CM,
while the Polish characters and Polish and French quotation marks
are placed in higher ASCII positions, namely:
A with ogonek -- 129 a with ogonek -- 161
C with acute accent -- 130 c with acute accent -- 162
E with ogonek -- 134 e with ogonek -- 166
L with cross -- 138 l with cross -- 170
N with acute accent -- 139 n with acute accent -- 171
O with acute accent -- 211 o with acute accent -- 243
S with acute accent -- 145 s with acute accent -- 177
Z with acute accent -- 153 z with acute accent -- 185
Z with dot accent -- 155 z with dot accent -- 187
<< (French opening quotes) -- 174
>> (French opening quotes) -- 175
,, (Polish opening quotes) -- 255
Note that the Polish diacritical letters have the codes of the Extended
CM layout (Cork encoding).
3. A few remarks on the design of the PL fonts
----------------------------------------------
a) The METAFONT programs for letters and for the Polish opening quotes
are based on the respective CM programs; we decided not to
exploit a sneaky way of reading CM programs twice (or reading them
and storing) and modifying `extra_beginchar' and `extra_endchar',
or so, as we found such an aproach to be inconsistent with
the general philosophy of the Computer Modern font family design
(although see, e.g., the program for SS in the CSC font).
b) Unlike the CM parametric files, the PL ones do not contain lists
of parameter assignments. Instead, a CM driver file is input
while processing the corresponding PL driver.
c) The quotation marks are accessible via ligatures (,, << >>).
The Polish diacritical letters can be accessed either directly or
using an active prefix character (slash)---see the description of
the format MeX. No ligatures are used to form the Polish diacritical
characters. There are good reasons for doing so.
d) Since the Polish diacritical letters are not meant to be used as
math variables, they are not `math_adjusted'.
e) METAFONT doesn't allow for more than 16 different heights per font;
because of this limitation the upper half of the ASCII table is
deliberately left almost empty.
In spite of that an additional height introduced by accented
majuscules may cause an automatic adjustation of the remaining
heights, and it may happen that, e.g., `x_height' will be changed.
This makes the full compatibility between PL and CM fonts rather
impossible; let's hope that such incompatible situations will occur
very rarely.
f) An attempt was made to avoid introducing extra parameters; in some
cases, however, such extra (optional) parameters may prove to be
necessary for the final tunig. All optional parameters are described
in the file pl_dod.mf (an additional file for PL fonts; in fact,
a base format). Examples of use of optional parameters can be found
in the following files:
plb10, plbx5, plbx6, plbx7, plbx8, plcsc10, pldunh10, plfi10, plff10,
plitt10, plr5, plr6, plr7, plr8, plr9, plr12, plr17, plsl8, plsl9,
plsl12, plssq8, plssqi8, pltcsc10, plti7, plti8, plti12, and plvtt10.
g) plsy fonts include alternative less-or-equal and greater-or-equal
signs (like AMSTeX `\leqslant' and `\geqslant'), used in Polish math
texts; this extension was suggested by Mr. W\l{}odzimierz J. Martin.
h) plmi, plmib and pltex fonts are renamed (for uniformness) cmmi, cmmib
and cmtex fonts. The latter one reflects the layout of the keyboard
of the computer used by D. E. Knuth (D. E. Knuth, ``Computer Modern
Typefaces,'' p. 568); it is unlikely that Polish characters were
present there.
i) The design of the Polish diacritical characters in fonts plr, plbx,
pltt, plss, plti and plssbx was consulted with Mr. Roman Tomaszewski,
the President of the Polish Division of ATypI (Association Typographique
Internationale).
The authors are extremally grateful to him for his advices and for
the time he devoted to the problem of the Polish version of CM fonts.
Mr. Roman Tomaszewski died in December 1993.
j) D. E. Knuth encourages users to generate their own fonts: ``Many
more variations (bold and/or slanted and/or sans-serif) could be
tried.'' he says (``Computer Modern Typefaces'', p. 30). The authors
of the PL fonts share rather the Roman Tomaszewski's opinion, that one
should be very, very careful in following this advice.
4. A few remarks on the design of the Polish diacritical characters
-------------------------------------------------------------------
a) The accents over minuscules are very similar to the accents
that can be obtained using TeX's acute accent (\') operation;
accents over majuscules, however, are rotated a bit (if serifs)
or flattened a bit (if not serifs); exceptionally, in the extremely
slim pldunh10 font accents over majuscules are not sloped.
b) The dot accent over `z' and `Z' is like a dot over the letter `i'.
The dot accent put by TeX's command `\.' is a bit different, which
does not look nice in Polish words like `gwi\.zd\.ze' (eng. whistles).
c) The cross for the polish `l' and `L' is longer and thicker (for `L'
is bigger than for `l') than the standard CM's cross (TeX commands
`\l' and `\L').
d) The programs for the Polish opening quotes are based on the CM's
closing quotes; the French quotation marks are designed from scratch.
e) The geometry of an ogonek is very simple: its outer and inner edges
are single B\'ezier segments. The algorithm of computing the control
points for the B\'ezier curves, however, is admittedly sophisticated.
This is due to the fact that a wide spectrum of different ogonek shapes
is in fact to be programmed: one shape is needed for caps, another for
`a' with ogonek, yet another for `e' with ogonek, as they all have
different joins. Moreover, a sansserif ogonek differs significantly
from the serif one, a bold ogonek from the non-bold, an ogonek for hefty
fonts should still be different. And, if you take into account that
the basic font unit |u| may change during one session of font
generation (monospace and caps-small-caps) and that a few different
pens may be used to draw a single letter you'll understand why
so many |if| ... |else:| ... |fi| commands are used in the ogonek
program.
f) Implicit kerns are mostly the same for the Polish diacritical letters
as for the respective Latin ones; although, there are a few exceptions
(see the files polan.mf, polkur.mf and polkap.mf). The same concerns
the italic correction inserted after the Polish characters.
The present distribution consists of:
(a) 12 basic files:
fik_mik.mf, pl_cud.mf, pl_dl.mf, pl_dod.mf, pl_ml.mf,
pl_mlk.mf, pl_sym.mf, polan.mf, polkap.mf, polkur.mf,
polmat.mf, poltyt.mf;
(b) 80 parameter files:
plb10.mf, plbsy10.mf, plbsy5.mf, plbsy7.mf, plbx10.mf, plbx12.mf,
plbx5.mf, plbx6.mf, plbx7.mf, plbx8.mf, plbx9.mf, plbxsl10.mf,
plbxti10.mf, plcsc10.mf, pldunh10.mf, plex10.mf, plff10.mf,
plfi10.mf, plfib8.mf, plinch.mf, plitt10.mf, plmi10.mf,
plmi12.mf, plmi5.mf, plmi6.mf, plmi7.mf, plmi8.mf, plmi9.mf,
plmib10.mf, plmib5.mf, plmib7.mf, plr10.mf, plr12.mf, plr17.mf,
plr5.mf, plr6.mf, plr7.mf, plr8.mf, plr9.mf, plsl10.mf, plsl12.mf,
plsl8.mf, plsl9.mf, plsltt10.mf, plss10.mf, plss12.mf, plss17.mf,
plss8.mf, plss9.mf, plssbi10.mf, plssbx10.mf, plssdc10.mf,
plssi10.mf, plssi12.mf, plssi17.mf, plssi8.mf, plssi9.mf,
plssq8.mf, plssqi8.mf, plsy10.mf, plsy5.mf, plsy6.mf, plsy7.mf,
plsy8.mf, plsy9.mf, pltcsc10.mf, pltex10.mf, pltex8.mf, pltex9.mf,
plti10.mf, plti12.mf, plti7.mf, plti8.mf, plti9.mf, pltt10.mf,
pltt12.mf, pltt8.mf, pltt9.mf, plu10.mf, plvtt10.mf;
nearly all parameter files employ Knuth's sources;
the exception are plbsy5.mf, plbsy7.mf, plmib5.mf, plmib7.mf,
which make use of the sources from AMS distribution of Computern
Modern family; these fonts are currently absent from the
distribution of Type 1 collection of PL fonts;
(c) 2 extra files:
* cmssbi10.mf -- added for the sake of completeness
(such a file is missing from the original set
of parameter files);
* dlr10.mf -- a sample file, demonstrating how to change the
basic unit of a font (in this case, the parameter file
defines 10 didot point font)
--------
HISTORY:
--------
7 Feb 1992: version 1.00
11 Feb 1992: version 1.01
* no changes; the new version number due to changes in \MeX{} format
25 May -- 1 Jun 1992: version 1.02
* pl_dod.mf:
the following two erroneous assignments:
z_a:=(x_down+the_left_pos,.5penkind); % starting point
z_d:=(xpart(z_a)-.5penkind,y_right+.5penkind)+the_tip_pos; % ending point
changed to the following ones:
z_a:=(x_down+the_left_pos,ypart(ogonek_pos)); % starting point
z_d:=(xpart(z_a)-.5penkind,y_right+ypart(ogonek_pos))+
the_tip_pos; % ending point
Some comments changed.
* pl_mlk.mf:
the stroke in crossed l (olde code for the letter l):
filldraw stroke z1e--z2e; %| stem
changed to:
filldraw stroke z1e--z2'e; %| stem
* fik_mik.mf:
cmbase.mf is being read by fik_mik.mf in order to prevent
reading it while processing parameter files
18 Dec 1992: version 1.03
* fik_mik.mf:
possibility of arbitrary rescaling added: the value of
|basic_unit#| can be used to override default |pt#| basic
unit (suggestion of M. \L{}akomy; cf. the sample file dlr10.mf
producing a |10dd#| roman font)
* cosmetic changes in cmbx11.mf, cmr11.mf, cmti11.mf, cmsl11.mf,
cmssbi10.mf, and polan.mf
14 Apr 1996: version 1.07$gamma$ -- unofficial release
(versions 1.04 thru 1.06 were never released)
* a nasty bug removed, found by Andreas Schwab in connection with
Joerg Knappen's works on including the code of PL fonts into
EC fonts: TFM files used to depend on resolution due to rounding
errors (many thanks, Andreas and Joerg)
* macro |put_dot| corrected (PL_DOD.MF)
* |qvair| and |limit_dist| defined as macros (used to be variables)
* some code cleaning
13 Apr 2000: version 1.07 -- official release (for BachoTeX 2000)
* no changes of code since version 1.07$\gamma$
* files cmr11.mf, cmti11.mf, cmsl11.mf removed from the distribution
as useless.
* changes in the documentation and new comments in the files
13 Apr 2000: version 1.08 (the date was deliberately retained)
* pl_dod:
a line added in |beginchar_twice| (at the beginning of ``discrete''
calculations):
save mode_guard_; % dedicated to those who use Karl Berry's modes.mf
the problems with modes.mf were reported by W\l{}odek Macewicz
* the modification HAS NOT INFLUENCE on metric files, i.e.,
the files generated from version 1.07 are identical; we do
our best to follow Donald E. Knuth's enunciation:
``I absolutely guarantee that the TFM files will never change again.''
(DeK, file CM85bug)
* font plex9 removed from the distribution as not relevant to
the original Computer Modern family; if required (?),
it suffices to copy plex10.mf to plex9.mf
* comment cleaning
13 Apr 2001: version 1.09
* pl_dod:
the types of the parameters of |special| and |numspecial|,
re-defined in |beginchar_twice|, were inconsistent with
the METAFONT syntax (|primary| instead of |expr|):
<special command> :=
special <string expression> | numspecial <numeric expression>
--------------
EMAIL CONTACT:
--------------
B.Jackowski@gust.org.pl or M.Rycko@gust.org.pl
|
