def mergeeditform(ctxorbool, baseformname):
    """return appropriate editform name (referencing a committemplate)

    'ctxorbool' is either a ctx to be committed, or a bool indicating whether
    merging is committed.

    This returns baseformname with '.merge' appended if it is a merge,
    otherwise '.normal' is appended.
    """
    if isinstance(ctxorbool, bool):
        if ctxorbool:
            return baseformname + b'.merge'
    elif len(ctxorbool.parents()) > 1:
        return baseformname + b'.merge'
    return baseformname + b'.normal'
