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File: web2c.info,  Node: vftovp invocation,  Next: vptovf invocation,  Prev: pltotf invocation,  Up: Font utilities

10.8 VFtoVP: Virtual font to virtual property lists
===================================================

VFtoVP translates a virtual font metric (VF, *note Virtual fonts:
(dvips)Virtual fonts.) file and its accompanying TeX font metric (TFM,
*note Metric files: (dvips)Metric files.) file (as output by VPtoVF, for
example) to "virtual property list format" (a list of parenthesized
items describing the virtual font) that humans can edit or read.  This
program is mostly used by people debugging virtual font utilities.
Synopsis:

     vftovp [OPTION]... VFNAME[.vf] [TFMNAME[.tfm] [VPLFILE[.vpl]]]

   The fonts VFNAME and TFMNAME (extended with `.vf' and `.tfm' if
necessary) are searched for in the usual places (*note Supported file
formats: (kpathsea)Supported file formats.).  To see all the relevant
paths, set the environment variable `KPATHSEA_DEBUG' to `-1' before
running the program.  If TFMNAME is not specified, VFNAME (without a
trailing `.vf') is used.

   If VPLFILE (extended with `.vpl' if necessary) is not specified, the
property list file is written to standard output.  The property list
file can be converted back to VF and TFM format by the companion
program VFtoVP (see the next section).

   The program accepts the following option, as well as the standard
`-verbose', `-help' and `-version' (*note Common options::):
`-charcode-format=TYPE'
     Output character codes in the PL file according to TYPE: either
     `octal' or `ascii'.  Default is `ascii' for letters and digits,
     octal for all other characters.  Exception: if the font's coding
     scheme starts with `TeX math sy' or `TeX math ex', all character
     codes are output in octal.

     In `ascii' format, character codes that correspond to graphic
     characters, except for left and right parentheses, are output as a
     `C' followed by the single character: `C K', for example.  In
     octal format, character codes are output as the letter `O' followed
     by octal digits, as in `O 113' for `K'.

     `octal' format is useful for symbol and other non-alphabetic fonts,
     where using ASCII characters for the character codes is merely
     confusing.