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TFMTODIT


Section: User Commands (1)
Updated: 27 February 2002
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NAME

tfmtodit – create font files for use with groff -Tdvi
 

SYNOPSIS


tfmtodit

-sv ]

-ggf_file ]

-kskewchar ]

tfm_file

map_file

font


It is possible to have whitespace between a command line option and its
parameter.
 

DESCRIPTION

tfmtodit

creates a font file for use with
groff -Tdvi.

tfm_file

is the name of the TeX font metric file for the font.
map_file

is a file giving the groff names for characters in the font;
this file should consist of a sequence of lines of the form:



n c1 c2


where
n

is a decimal integer giving the position of the character in the font,
and
c1,

c2,…

are the groff names of the character.
If a character has no groff names but exists in the tfm file,
then it will be put in the groff font file as an unnamed character.
font

is the name of the groff font file.
The groff font file is written to
font.

The
-s

option should be given if the font is special
(a font is
special

if
troff

should search it whenever
a character is not found in the current font.)
If the font is special,
it should be listed in the
fonts

command in the DESC file;
if it is not special, there is no need to list it, since
troff

can automatically mount it when it’s first used.

To do a good job of math typesetting, groff requires
font metric information not present in the tfm file.
The reason for this is that TeX has separate math italic fonts
whereas groff uses normal italic fonts for math.
The additional information required by groff is given by the
two arguments to the
math_fit

macro in the Metafont programs for the Computer Modern fonts.
In a text font (a font for which
math_fitting

is false), Metafont normally ignores these two arguments.
Metafont can be made to put this information in the gf file
by loading the following definition after
cmbase

when creating
cm.base:




def ignore_math_fit(expr left_adjustment,right_adjustment) =
special "adjustment";
numspecial left_adjustment*16/designsize;
numspecial right_adjustment*16/designsize;
enddef;


For the EC font family, load the following definition after
exbase

(it is probably easiest to patch
exbase.mf

locally):




def ignore_math_fit(expr left_adjustment,right_adjustment) =
ori_special "adjustment";
ori_numspecial left_adjustment*16/designsize;
ori_numspecial right_adjustment*16/designsize;
enddef;


The gf file created using this modified
cm.base

or
exbase

should be specified with the
-g

option.
The
-g

option should not be given for a font for which
math_fitting

is true.
 

OPTIONS


-v


Print the version number.
-s


The font is special.
The effect of this option is to add the
special

command to the font file.

-kn


The skewchar of this font is at position
n.

n

should be an integer;
it may be given in decimal,
or with a leading
0

in octal,
or with a leading
0x

in hexadecimal.
The effect of this option is to ignore any kerns whose second component
is the specified character.

-ggf_file


gf_file

is a gf file produced by Metafont containing special and numspecial
commands giving additional font metric information.


 

FILES

u+2n



/usr/share/groff/1.18.1.4/font/devdvi/DESC

Device description file.

/usr/share/groff/1.18.1.4/font/devdvi/F


Font description file for font
F.


 

SEE ALSO

groff(1),

grodvi(1),

groff_font(5)



 

Index



NAME

SYNOPSIS

DESCRIPTION

OPTIONS

FILES

SEE ALSO



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