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vtfontcvt.8: Improve synopsis and -f documentation
MFC after: 2 weeks
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@ -24,7 +24,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd August 2, 2020
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.Dd July 19, 2022
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.Dt VTFONTCVT 8
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.Os
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.Sh NAME
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@ -33,7 +33,7 @@
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.Sh SYNOPSIS
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.Nm
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.Op Fl n
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.Op Fl f Ar font Ns | Ns Ar source Ns | Ns Ar compressed-source
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.Op Fl f Ar format
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.Op Fl h Ar height
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.Fl o Ar output_file
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.Op Fl v
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@ -44,22 +44,35 @@
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The
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.Nm
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utility reads source font files in either BDF or Unifont HEX format and
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outputs a binary font file, C source, or C source with font data compressed
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by using LZ4 compression method.
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The output in C source is intended to be used to embed the font into program
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binary.
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The binary font file is for use by
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.Xr vt 4 .
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HEX format files must have the file extension
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outputs a file in one of the available output formats.
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.Pp
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HEX format files
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.Po Ar normal_font
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and
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.Ar bold_font Pc
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must have the file extension
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.Pa .hex .
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.Pp
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The following options are available:
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.Bl -tag -width "12345678"
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.It Fl f Ar font Ns | Ns Ar source Ns | Ns Ar compressed-source
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.Bl -tag -width "-o output_file"
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.It Fl f Ar format
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Specify the output format.
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The default is binary
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.Ar font
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file.
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Available formats are:
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.Bl -tag -width "compressed-source"
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.It Cm compressed-source
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C source with font data compressed by using LZ4 compression method.
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.It Cm font
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A binary font file
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.Pq default .
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.It Cm source
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C source.
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.El
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.Pp
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The output in C source is intended to be used to embed the font into program
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binary.
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.Pp
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The binary font file is for use by
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.Xr vt 4 .
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.It Fl h Ar height
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Set font height.
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The default is 16.
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