*  ▲: Normal merge (or ◀ or ▶ as appropriate)
*  ⭕: Cherrypick merge (resembles a cherry)
*  ❌: Backout merge (signifies removal)

The merge lines may also be shown in different colors, e.g. green for cherrypick and red for backout.

Suggest allowing this feature to be configurable via theme.  Also may be a user checkbox to show or hide cherrypick/backout merges.

In