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.Dd December 29, 2020
.Dt HILEX 1
.Os
.
.Sh NAME
.Nm hilex
.Nd syntax highlighter
.
.Sh SYNOPSIS
.Nm
.Op Fl t
.Op Fl f Ar format
.Op Fl l Ar lexer
.Op Fl n Ar name
.Op Fl o Ar opts
.Op Ar file
.
.Sh DESCRIPTION
The
.Nm
utility
syntax highlights
the contents of
.Ar file
or standard input
and formats it on standard output.
.
.Pp
The arguments are as follows:
.Bl -tag -width "-f format"
.It Fl f Ar format
Set the output format.
See
.Sx Output Formats .
The default format is
.Cm ansi .
.
.It Fl l Ar lexer
Set the input lexer.
See
.Sx Input Lexers .
The default input lexer is inferred from
.Ar name .
.
.It Fl n Ar name
Set the name used to infer the input lexer.
The default is the final component of
.Ar file .
.
.It Fl o Ar opts
Set output format options.
.Ar opts
is a comma-separated list of options.
Options for each output format are documented in
.Sx Output Formats .
.
.It Fl t
Default to the
.Cm text
input lexer if one cannot be inferred.
.El
.
.Ss Output Formats
.Bl -tag -width Ds
.It Cm ansi
Output ANSI terminal control sequences.
.
.It Cm html
Output HTML
.Sy <span>
elements
within a
.Sy <pre>
element.
Each element has the classes
.Sy hilex
and one of the following:
.Sy Operator ,
.Sy Number ,
.Sy Keyword ,
.Sy Identifier ,
.Sy IdentifierTag ,
.Sy Macro ,
.Sy Comment ,
.Sy String ,
.Sy StringEscape ,
.Sy StringFormat ,
.Sy Interpolation .
.
.Pp
The options are as follows:
.Bl -tag -width "title=..."
.It Cm anchor
Output identifier tags as anchor links.
.
.It Cm css Ns = Ns Ar url
With
.Cm document ,
output a
.Sy <link>
element for the external stylesheet
.Ar url .
If unset,
output default styles in a
.Sy <style>
element.
.
.It Cm document
Output an HTML document containing the
.Sy <pre>
element.
.
.It Cm inline
Output inline
.Sy style
attributes rather than classes.
.
.It Cm tab Ns = Ns Ar n
With
.Cm document
or
.Cm inline ,
set the
.Sy tab-size
property to
.Ar n .
.
.It Cm title Ns = Ns Ar ...
With
.Cm document ,
set the
.Sy <title>
element text.
The default title is the same as
.Ar name .
.El
.
.It Cm irc
Output IRC formatting codes.
The options are as follows:
.Bl -tag -width "monospace"
.It Cm monospace
Use the IRCCloud monospace formatting code.
.El
.El
.
.Ss Input Lexers
.Bl -tag -width Ds
.It Cm c
The C11 language,
with minimal support for
.Xr lex 1 ,
.Xr yacc 1
and Objective-C input.
Inferred for
.Pa *.[chlmy]
files.
.
.It Cm make
The portable subset of
.Xr make 1 .
Inferred for
.Pa *.mk
and
.Pa Makefile
files.
.
.It Cm mdoc
The
.Xr mdoc 7
language.
Inferred for
.Pa *.[1-9]
files.
.
.It Cm text
Plain text.
Inferred for
.Pa *.txt
files.
.El
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