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<title>ploticus: general interpreter settings</title>
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<td><br><h2>general interpreter settings</h2></td>
<td align=right>
<small>
<a href="../doc/welcome.html"><img src="../doc/ploticus.gif" border=0></a><br>
Version 2.41 Mar2009
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<title>Manual page for general_interpreter_settings(PL)</title>
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<h2>General interpreter settings</h2>
The <tt>#mode</tt> directive can be used to make general
settings that affect how the QUISP template interpreter behaves.<tt> </tt>
<br><br><br>
<h2>#mode</h2>
Set various operational modes.<tt> </tt>
<p>
Usage: <tt>#mode </tt><i>attribute</i> <i>value</i>
<p>
<i>attribute</i> may be one of the following:
<p>
<b>allowinlinecodes</b>
<dl>
<dt><dd><p>
If <i>value</i> is <tt>yes</tt>, evaluate
<a href="inlinecodes.html">
inline codes
</a>
found in script content. These are formatting codes particular to this software, that are useful in certain specialized formatting operations.<tt> </tt>
Example: <tt>allowinlinecodes yes</tt>
<br><br>
</dl>
<p>
<b>error_mode</b>
<dl>
<dt><dd><p>
Default is <tt>stderr</tt>, so that error messages are written to standard error.<tt> </tt>
This may be set to <tt>stdout</tt> for error messages to be written to standard output.<tt> </tt>
<br><br>
</dl>
<p>
<b>dot_in_varnames</b>
<dl>
<dt><dd><p>
Specifies whether variable names may contain periods (.).<tt> </tt>
Default is <tt>yes</tt>, which is convenient with SQL applications since join
results are named using a period.<tt> </tt>
<br>
Example: <tt>#mode dot_in_varnames no</tt>
<br><br>
</dl>
<p>
<b>evalvars</b>
<dl>
<dt><dd><p>
Default is <tt>yes</tt>. Use <tt>no</tt> to turn off evaluation of variables.<tt> </tt>
<br>
Example: <tt>#mode evalvars no</tt>
<br><br>
</dl>
<p>
<b>nullrep</b>
<dl>
<dt><dd><p>
This determines how NULL database fields will be represented.<tt> </tt>
Allowable values are <tt>blank</tt>, <tt>null</tt>, <tt>nbsp</tt>, and <tt>noconvert</tt>.<tt> </tt>
The default is <tt>blank</tt> which causes NULLs to be converted to zero length strings.<tt> </tt>
Use <tt>nbsp</tt> to convert NULLs to the HTML non-breaking space character <tt>&nbsp;</tt>
This should be invoked before result rows are fetched.<tt> </tt>
Conversion occurs after the row is retrieved from the database.<tt> </tt>
<pre>
</pre>
Example: <tt>#mode nullrep nbsp</tt>
<br><br>
</dl>
<p>
<b>shellmetachars</b>
<dl>
<dt><dd><p>
This specifies the set of characters that are to be screened out of
variables that are present when building a shell command
(see the opening paragraphs of the
<a href="shell.html">
#shell man page
</a>
). There should be no embedded whitespace.<tt> </tt>
This can also be set in the
<a href="config.html">
project config file
</a>
<br>
Default set of shell metacharacters is: <tt>"'`$\;</tt>
<br>
Example: <tt>#mode shellmetachars "'`</tt>
</dl>
<p>
<b>suppressdll</b>
<dl>
<dt><dd><p>
<i>value</i> should be <tt>yes</tt> to suppress data-less lines, and <tt>no</tt>
to show data-less lines. Default is <tt>no</tt>.
A data-less line is a line
having one or more variables, all of which evaluate to a zero-length value.<tt> </tt>
Suppressing data-less lines is sometimes useful, for example, when displaying
multi-line entities such as postal addresses.<tt> </tt>
<br><br><br>
</dl>
<h2>Database mode settings</h2>
See also the
<a href="../../sqlman/html/shsql_handbook.html">
shsql
</a>
SQLMODE command, which can be used to make certain database-specific settings.<tt> </tt>
<br><br><br>
<br>
<br>
</td></tr>
<td align=right>
<a href="../doc/welcome.html">
<img src="../doc/ploticus.gif" border=0></a><br><small>data display engine <br>
<a href="../doc/Copyright.html">Copyright Steve Grubb</a>
<br>
<br>
<center>
<img src="../gallery/all.gif">
</center>
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<table><tr><td>
Ploticus is hosted at http://ploticus.sourceforge.net</td><td> </td><td>
<a href="http://sourceforge.net/projects/ploticus"><img src="http://sflogo.sourceforge.net/sflogo.php?group_id=38453&type=12"
width="120" height="30" border="0"
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