SVG stroke-linecap at one end only

Question

Is it possible to add a linecap to only one end of a stroke? Not both ends as is the default shown in the sample below.

<?xml version="1.0"?>
<svg width="120" height="120" viewBox="0 0 120 120" version="1.1" xmlns="http://www.w3.org/2000/svg">

    <line stroke-linecap="butt"
      x1="30" y1="30" x2="30" y2="90"
      stroke="teal" stroke-width="20"/>

    <line stroke-linecap="round"
      x1="60" y1="30" x2="60" y2="90"
      stroke="teal" stroke-width="20"/>
          
    <path d="M30,30 L30,90 M60,30 L60,90 M90,30 L90,90" 
      stroke="white" />
</svg>

Answer 1

You could do this with two lines, one on top of the other.

<?xml version="1.0"?>
<svg width="120" height="120" viewBox="0 0 120 120" version="1.1" xmlns="http://www.w3.org/2000/svg">

    <line stroke-linecap="butt"
      x1="30" y1="30" x2="30" y2="90"
      stroke="teal" stroke-width="20"/>

    <line stroke-linecap="round"
      x1="60" y1="30" x2="60" y2="70"
      stroke="teal" stroke-width="20"/>
    <line stroke-linecap="butt"
      x1="60" y1="40" x2="60" y2="90"
      stroke="teal" stroke-width="20"/>
          
    <path d="M30,30 L30,90 M60,30 L60,90 M90,30 L90,90" 
      stroke="white" />
</svg>