tfmtodit(1) — Linux manual page

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tfmtodit(1)                General Commands Manual               tfmtodit(1)

Name         top

       tfmtodit - create font files for use with groff -Tdvi

Synopsis         top

       tfmtodit [-s] [-g gf-file] [-k skew-char] tfm-file map-file font

       tfmtodit --help

       tfmtodit -v
       tfmtodit --version

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
              i c1 ... cn
       where i is a decimal integer giving the position of the character in
       the font, and c1 through cn are are the groff names of the character.
       If a character has no groff names but exists in tfm-file, then it
       will be put in the groff font file as an unnamed character.  The
       groff font file is written to font.

       The -s option should be given if the font is “special”, meaning that
       groff should search it whenever a character is not found in the
       current font.  In that case, font should be listed as an argument to
       the fonts directive in the DESC file; if it is not special, there is
       no need to list it, since groff can automatically mount it when it is
       first used.

       To do a good job of math typesetting, groff requires font metric
       information not present in tfm-file.  This is because 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_fit
       is false), Metafont normally ignores these two arguments.  Metafont
       can be made to put this information into the GF (“generic font”)
       files it produces 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;

       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 only difference from the previous example is the “ori_” prefix to
       “special” and “numspecial”.

       The GF file created using this modified cm.base or should
       be specified with the -g option, which should not be given for a font
       for which math_fit is true.

Options         top

       --help displays a usage message, while -v and --version show version
       information; all exit afterward.

       -g gf-file
              Use the gf-file produced by Metafont containing “special” and
              numspecial commands to obtain additional font metric

       -k skew-char
              The skew charcter of this font is at position skew-char.
              skew-char should be an integer; it may be given in decimal,
              with a leading 0 in octal, or with a leading 0x in
              hexadecimal.  Any kerns whose second component is skew-char
              are ignored.

       -s     Add the special directive to the generated file font.

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 2020-07-14.  (At that
       time, the date of the most recent commit that was found in the repos‐
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       of the original manual page), send a mail to

groff            16 May 2020                     tfmtodit(1)

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