Problem with multiline alt in image

[mikbur]

<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAHkAAABdCAYAAACBx8lpAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAOx" alt="A close up of a sign

Description automatically generated"> 

generates

![A close up of a sign

Description automatically generated](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAHkAAABdCAYAAACBx8lpAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAOx)

My solution is unable to parse this to an image so I modified the rule to this

turndownService.addRule('image', {
    filter: 'img',

    replacement: function (content, node) {
      var alt = node.alt || ''
      // Added row to remove linebreaks in alt
      alt = alt.substring(0, alt.indexOf('\n'))
      var src = node.getAttribute('src') || ''
      var title = node.title || ''
      var titlePart = title ? ' "' + title + '"' : ''
      return src ? '![' + alt + ']' + '(' + src + titlePart + ')' : ''
    }
  })

[domchristie]

Thanks! Single line-breaks seems to be valid in CommonMark, so #325 strips multiple newlines and whitespace. It will be released in the next version.