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Enscript
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<a class="external" href="http://people.ssh.com/mtr/genscript"><img src="moin-www.png" alt="[WWW]" height="11" width="11">GNU Enscript</a> converts ASCII files to PostScript, HTML, and other output languages, applying language sensitive highlighting (similar to <a href="Emacs">Emacs</a>'s font lock mode). Here are a few <em>states</em> files for highlighting <a href="StandardML"> Standard ML</a>.
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<a href = "http://mlton.org/cgi-bin/viewsvn.cgi/mlton/tags/on-MLTONWIKIVERSION-release/ide/enscript/sml_simple.st?view=markup"><img src="moin-www.png" alt="[WWW]" height="11" width="11">sml_simple.st</a> -- Provides highlighting of keywords, string and character constants, and (nested) comments.
<pre class=code>
<I><FONT COLOR="#B22222">(* Comments (* can be nested *) *)</FONT></I>
<B><FONT COLOR="#A020F0">structure</FONT></B> S = <B><FONT COLOR="#A020F0">struct</FONT></B>
<B><FONT COLOR="#A020F0">val</FONT></B> x = (1, 2, <B><FONT COLOR="#BC8F8F">"three"</FONT></B>)
<B><FONT COLOR="#A020F0">end</FONT></B>
</PRE>
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<a href = "http://mlton.org/cgi-bin/viewsvn.cgi/mlton/tags/on-MLTONWIKIVERSION-release/ide/enscript/sml_verbose.st?view=markup"><img src="moin-www.png" alt="[WWW]" height="11" width="11">sml_verbose.st</a> -- Supersedes the above, adding highlighting of numeric constants. Due to the limited parsing available, numeric record labels are highlighted as numeric constants, in all contexts. Likewise, a binding precedence separated from <tt>infix</tt> or <tt>infixr</tt> by a newline is highlighted as a numeric constant and a numeric record label selector separated from <tt>#</tt> by a newline is highlighted as a numeric constant.
</p>
<pre class=code>
<B><FONT COLOR="#A020F0">structure</FONT></B> S = <B><FONT COLOR="#A020F0">struct</FONT></B>
<I><FONT COLOR="#B22222">(* These look good *)</FONT></I>
<B><FONT COLOR="#A020F0">val</FONT></B> x = (<B><FONT COLOR="#5F9EA0">1</FONT></B>, <B><FONT COLOR="#5F9EA0">2</FONT></B>, <B><FONT COLOR="#BC8F8F">"three"</FONT></B>)
<B><FONT COLOR="#A020F0">val</FONT></B> z = #2 x
<I><FONT COLOR="#B22222">(* Although these look bad (not all the numbers are constants), *
* they never occur in practice, as they are equivalent to the above. *)</FONT></I>
<B><FONT COLOR="#A020F0">val</FONT></B> x = {<B><FONT COLOR="#5F9EA0">1</FONT></B> = <B><FONT COLOR="#5F9EA0">1</FONT></B>, <B><FONT COLOR="#5F9EA0">3</FONT></B> = <B><FONT COLOR="#BC8F8F">"three"</FONT></B>, <B><FONT COLOR="#5F9EA0">2</FONT></B> = <B><FONT COLOR="#5F9EA0">2</FONT></B>}
<B><FONT COLOR="#A020F0">val</FONT></B> z = #
<B><FONT COLOR="#5F9EA0">2</FONT></B> x
<B><FONT COLOR="#A020F0">end</FONT></B>
</PRE>
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<a href = "http://mlton.org/cgi-bin/viewsvn.cgi/mlton/tags/on-MLTONWIKIVERSION-release/ide/enscript/sml_fancy.st?view=markup"><img src="moin-www.png" alt="[WWW]" height="11" width="11">sml_fancy.st</a> -- Supersedes the above, adding highlighting of type and constructor bindings, highlighting of explicit binding of type variables at <tt>val</tt> and <tt>fun</tt> declarations, and separate highlighting of core and modules level keywords. Due to the limited parsing available, it is assumed that the input is a syntactically correct, top-level declaration.
<pre class=code>
<B><FONT COLOR="#0000FF">structure</FONT></B> S = <B><FONT COLOR="#0000FF">struct</FONT></B>
<B><FONT COLOR="#A020F0">val</FONT></B> x = (<B><FONT COLOR="#5F9EA0">1</FONT></B>, <B><FONT COLOR="#5F9EA0">2</FONT></B>, <B><FONT COLOR="#BC8F8F">"three"</FONT></B>)
<B><FONT COLOR="#A020F0">datatype</FONT></B><B><FONT COLOR="#228B22"> 'a t </FONT></B>=<B><FONT COLOR="#228B22"> <FONT COLOR="#B8860B">T</FONT> <B><FONT COLOR="#A020F0">of</FONT></B> 'a
</FONT></B><B><FONT COLOR="#A020F0">and</FONT></B><B><FONT COLOR="#228B22"> u </FONT></B>=<B><FONT COLOR="#228B22"> <FONT COLOR="#B8860B">U</FONT> <B><FONT COLOR="#A020F0">of</FONT></B> v * v
</FONT></B><B><FONT COLOR="#A020F0">withtype</FONT></B><B><FONT COLOR="#228B22"> v </FONT></B>=<B><FONT COLOR="#228B22"> {left: int t, right: int t}
</FONT></B><B><FONT COLOR="#A020F0">exception</FONT></B><B><FONT COLOR="#228B22"> <FONT COLOR="#B8860B">E1</FONT> <B><FONT COLOR="#A020F0">of</FONT></B> int </FONT></B><B><FONT COLOR="#A020F0">and</FONT></B><B><FONT COLOR="#228B22"> <FONT COLOR="#B8860B">E2</FONT>
</FONT></B><B><FONT COLOR="#A020F0">fun</FONT></B> <B><FONT COLOR="#228B22">'a</FONT></B> id (x: 'a) : 'a = x
<I><FONT COLOR="#B22222">(* Although this looks bad (the explicitly bound type variable 'a is *
* not highlighted), it is unlikely to occur in practice. *)</FONT></I>
<B><FONT COLOR="#A020F0">val</FONT></B>
'a id = <B><FONT COLOR="#A020F0">fn</FONT></B> (x : 'a) => x
<B><FONT COLOR="#0000FF">end</FONT></B>
</PRE>
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<p>
<a href = "http://mlton.org/cgi-bin/viewsvn.cgi/mlton/tags/on-MLTONWIKIVERSION-release/ide/enscript/sml_gaudy.st?view=markup"><img src="moin-www.png" alt="[WWW]" height="11" width="11">sml_gaudy.st</a> -- Supersedes the above, adding highlighting of type annotations, in both expressions and signatures. Due to the limited parsing available, it is assumed that the input is a syntactically correct, top-level declaration.
<pre class=code>
<B><FONT COLOR="#0000FF">signature</FONT></B> S = <B><FONT COLOR="#0000FF">sig</FONT></B>
<B><FONT COLOR="#A020F0">type</FONT></B><B><FONT COLOR="#228B22"> t
</FONT></B><B><FONT COLOR="#A020F0">val</FONT></B> x :<B><FONT COLOR="#228B22"> t
</FONT></B><B><FONT COLOR="#A020F0">val</FONT></B> f :<B><FONT COLOR="#228B22"> t * int -> int
</FONT></B><B><FONT COLOR="#0000FF">end</FONT></B>
<B><FONT COLOR="#0000FF">structure</FONT></B> S : S = <B><FONT COLOR="#0000FF">struct</FONT></B>
<B><FONT COLOR="#A020F0">datatype</FONT></B><B><FONT COLOR="#228B22"> t </FONT></B>=<B><FONT COLOR="#228B22"> <FONT COLOR="#B8860B">T</FONT> <B><FONT COLOR="#A020F0">of</FONT></B> int
</FONT></B><B><FONT COLOR="#A020F0">val</FONT></B> x :<B><FONT COLOR="#228B22"> t </FONT></B>=<B><FONT COLOR="#228B22"></FONT></B> T <B><FONT COLOR="#5F9EA0">0</FONT></B>
<B><FONT COLOR="#A020F0">fun</FONT></B> f (T x, i :<B><FONT COLOR="#228B22"> int</FONT></B>) :<B><FONT COLOR="#228B22"> int </FONT></B>=<B><FONT COLOR="#228B22"></FONT></B> x + y
<B><FONT COLOR="#A020F0">fun</FONT></B> <B><FONT COLOR="#228B22">'a</FONT></B> id (x:<B><FONT COLOR="#228B22"> 'a</FONT></B>) :<B><FONT COLOR="#228B22"> 'a </FONT></B>=<B><FONT COLOR="#228B22"></FONT></B> x
<B><FONT COLOR="#0000FF">end</FONT></B>
</PRE>
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<h2 id="head-e5a1ef08918738578c7f1b88920c73a60499c69d">Install and use</h2>
<ul>
<li>
<p>
Version 1.6.3 of <a class="external" href="http://people.ssh.com/mtr/genscript"><img src="moin-www.png" alt="[WWW]" height="11" width="11">GNU Enscript</a>
</p>
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<ul>
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<p>
Copy all files to <tt>/usr/share/enscript/hl/</tt> or <tt>.enscript/</tt> in your home directory.
</p>
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<p>
Invoke <tt>enscript</tt> with <tt>--highlight=sml_simple</tt> (or <tt>--highlight=sml_verbose</tt> or <tt>--highlight=sml_fancy</tt> or <tt>--highlight=sml_gaudy</tt>).
</p>
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<p>
Version 1.6.1 of <a class="external" href="http://people.ssh.com/mtr/genscript"><img src="moin-www.png" alt="[WWW]" height="11" width="11">GNU Enscript</a>
</p>
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<p>
Append <a href = "http://mlton.org/cgi-bin/viewsvn.cgi/mlton/tags/on-MLTONWIKIVERSION-release/ide/enscript/sml_all.st?view=markup"><img src="moin-www.png" alt="[WWW]" height="11" width="11">sml_all.st</a> to <tt>/usr/share/enscript/enscript.st</tt>
</p>
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<p>
Invoke <tt>enscript</tt> with <tt>--pretty-print=sml_simple</tt> (or <tt>--pretty-print=sml_verbose</tt> or <tt>--pretty-print=sml_fancy</tt> or <tt>--pretty-print=sml_gaudy</tt>).
</p>
</li>
</ul>
</ul>
<p>
This <a href="WebSite">WebSite</a> uses <tt>sml_fancy</tt> to pretty-print <a href="StandardML">Standard ML</a> source code. Comments and suggestions should be directed to <a href="MatthewFluet">MatthewFluet</a>.
</p>
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<hr>
Last edited on 2006-11-02 17:41:43 by <span title="76.16.241.4"><a href="MatthewFluet">MatthewFluet</a></span>.
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