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POHow to call a function that moves the cursor without leaving visual mode?
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  1. POHow to call a function that moves the cursor without leaving visual mode?
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    copied!<p>I have a function that moves the cursor with the built-in <code>cursor()</code> function and it works fine on normal mode.<br> For concreteness suppose that this is the function:</p> <pre><code>function! F() call cursor( line('.')+1, 1) endfunction </code></pre> <p>used with a mappings as:</p> <pre><code> nnoremap &lt;buffer&gt; a :call F()&lt;cr&gt; </code></pre> <p>Now I want to reuse this function to move the cursor on any visual mode (visual, line visual, and block visual) and without losing the previous selection.</p> <p>For example, with an initial buffer in visual mode (<code>c</code> means the cursor is at a line, <code>v</code> means the line is part of the current visual selection):</p> <pre><code>vc 1 2 3 </code></pre> <p>hitting <code>a</code> would give:</p> <pre><code>v 1 vc 2 3 </code></pre> <p>and hitting <code>a</code> again would give:</p> <pre><code>v 1 v 2 vc 3 </code></pre> <p>so the old selection was kept.</p> <p>I would like to reuse <code>F()</code> as much as possible, since in my application <code>F()</code> is quite large.<br> What is the best way to do that?</p> <p>Up to now, the best I could do was use a wrapper function:</p> <pre><code>function! VisMove(f) normal! gv call function(a:f)() endfunction </code></pre> <p>and map as:</p> <pre><code> vnoremap &lt;buffer&gt; a :call VisMove('F')&lt;cr&gt; </code></pre> <p>however I am not satisfied because this:</p> <ol> <li>It requires putting the annoying wrapper on every new fgplugin I write.</li> <li>Calling a function that moves the cursor (or has other arbitrary side effects) without ever leaving visual (current) mode seems like such a natural thing to be able to do. There is even already <code>&lt;expr&gt;</code> which almost does it, but it resets cursor position.</li> </ol>
 

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