TFMTODIT(1)                General Commands Manual               TFMTODIT(1)

NAME         top

       tfmtodit - create font files for use with groff -Tdvi

SYNOPSIS         top

       tfmtodit [-sv] [-g gf_file] [-k skewchar] tfm_file map_file font

DESCRIPTION         top

       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

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

       For the EC font family, load the following definition after exbase
       (it is probably easiest to patch 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;

       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         top

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

       -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.

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

FILES         top

              Device description file.

              Font description file for font F.

SEE ALSO         top

       groff(1), grodvi(1), groff_font(5)

COLOPHON         top

       This page is part of the groff (GNU troff) project.  Information
       about the project can be found at 
       ⟨⟩.  If you have a bug report for
       this manual page, see ⟨⟩.  This
       page was obtained from the project's upstream Git repository
       ⟨⟩ on 2019-03-06.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2019-03-03.)  If you discover any rendering problems in
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Groff Version 1.22.3          24 November 2017                   TFMTODIT(1)

Pages that refer to this page: grodvi(1)groff(1)