Tip 94: Perform Arithmetic on the Replacement

Return to the top: <<Practical Vim>>

Example: promote each heading

<h2>Heading number 1</h2>
<h3>Number 2 heading</h3>
<h4>Another heading</h4>

The Search Pattern

/\v\<\/?h\zs\d

NOTE: \zs excludes the "h" itself.

The Substitute Command

:%s//\=submatch(0)-1/g