pentadactyl-pm/common/locale/en-US/eval.xml

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<document
    name="eval"
    title="&liberator.appname; Expression Evaluation"
    xmlns="http://vimperator.org/namespaces/liberator"
    xmlns:html="http://www.w3.org/1999/xhtml">
<h1 tag="expression expr eval">Expression evaluation</h1>

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<item>
    <tags>:ec :echo</tags>
    <spec>:ec<oa>ho</oa> <a>expr</a></spec>
    <description>
        <p>
            Echo the expression. Useful for showing informational messages. Multiple lines
            can be separated by \n. <a>expr</a> can either be a quoted string, or any expression
            which can be fed to eval() like 4+5. You can also view the source code of
            objects and functions if the return value of <a>expr</a> is an object or function.
        </p>
    </description>
</item>


<item>
    <tags>:echoe :echoerr</tags>
    <spec>:echoe<oa>rr</oa> <a>expr</a></spec>
    <description>
        <p>
            Echo the expression as an error message. Just like <ex>:ec<oa>ho</oa></ex> but echoes
            the result highlighted as ErrorMsg and saves it to the message history.
        </p>
    </description>
</item>


<item>
    <tags>:echom :echomsg</tags>
    <spec>:echom<oa>sg</oa> <a>expr</a></spec>
    <description>
        <p>
            Echo the expression as an informational message. Just like <ex>:ec<oa>ho</oa></ex> but
            also saves the message in the message history.
        </p>
    </description>
</item>


<item>
    <tags>:exe :execute</tags>
    <spec>:exe<oa>cute</oa> <a>expr</a></spec>
    <description>
        <p>
            Execute the string that results from the evaluation of <a>expr</a> as an Ex command.
            Example: <ex>:execute "source " + io.getRCFile().path</ex> sources the appropriate
            RC file.
        </p>
        
        <p>Note: Unlike Vim this currently only supports a single argument.</p>
    </description>
</item>


<item>
    <tags>:js :javas :javascript</tags>
    <spec>:javas<oa>cript</oa> <a>cmd</a></spec>
    <spec>:javascript &lt;&lt;<a>endpattern</a>\n<a>empty</a><a>script</a>\n<a>empty</a><a>endpattern</a></spec>
    <spec>:javascript<oa>!</oa></spec>
    <description>
        <p>
            Run any JavaScript command through eval(). Acts as a JavaScript interpreter by
            passing the argument to <tt>eval()</tt>.
            <ex>:javascript alert(<str>Hello world</str>)</ex> shows
            a dialog box with the text "Hello world".
            <ex>:javascript &lt;&lt;EOF</ex> reads all the lines
            until a line starting with "EOF"
            is found, and interpret them with the JavaScript <em>eval()</em> function.
        </p>
        
        <p>
            The special version <ex>:javascript!</ex> opens the JavaScript console of
            Firefox.
        </p>
        
        <p>
            <k name="Tab"/> completion is available for <ex>:javascript <a>cmd</a><k name="Tab"/></ex> (but not
            yet for the <ex>:js &lt;&lt;EOF</ex> multiline widget). Be aware that Vimperator needs
            to run <a>cmd</a> through eval() to get the completions, which could have unwanted
            side effects.
        </p>
    </description>
</item>


<item>
    <tags>:let</tags>
    <spec>:let <a>var-name</a> [+-.]= <a>expr1</a></spec>
    <spec>:let <a>var-name</a></spec>
    <spec>:let</spec>
    <description>
        <p>
            Sets or lists a variable. Sets the variable {var-name} to the value of the
            expression <a>expr1</a>. If no expression is given, the value of the variable is
            displayed. Without arguments, displays a list of all variables.
        </p>
    </description>
</item>


<item>
    <tags>:unl :unlet</tags>
    <spec>:unl<oa>et</oa><oa>!</oa> <a>name</a> …</spec>
    <description>
        <p>
            Deletes the variable <a>name</a>. Several variable names can be given. When used
            with <oa>!</oa> no error message is output for non-existing variables.
        </p>
    </description>
</item>

</document>

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