thank you for your kind words, you are right, this script, as it is, is only useful
if you have a data set similar to the one Marco has.
For those who want to have a more general solution replace the format_line
function with this one

def format_line(l_num):
    txt = ''
    spacer = 1
    for x in range(len(aLens) - 1):
        txt += a[x][l_num].rjust(aLens[x]+spacer)
    return txt + '\r\n'

Cheers
Claudia

afaik, UDL cannot help you here.
What could be done, in regards to formatting, is to use the Python Script plugin and a little script.
I’have written here what needs to be done first.

Regarding colorizing, it could be done but I don’t think a python script would be a good solution.
From what I understand, colorizing is done when you activate a new document, repeatedly but
a script runs once, normally.
If you use callbacks like BUFFERACTIVATED then you need to take care that there is a logical
way when the script should be executed and when not.
Lastly, the addStyledText function is not that fast. Colorizing 100 lines of your provided sample
takes up to 3 seconds.

So, a python script could look like this

a = [[] for x in editor.getLine(0).split(";")]   # create a list of lists using the first line in the doc

def ssv_to_list(cont, l_num, tot_lines):        # convert semicolon separated values to a list
    cont = cont.split(";") 
    for n in range(len(cont)): 
        a[n].append(cont[n].replace("\r\n", ""))
    
editor.forEachLine(ssv_to_list)     # well, self explaining I guess

aLens = [max([len(x) for x in a[y]]) for y in range(len(a))]    # find out what the biggest string is

def format_line(l_num):        # format the lines
    txt = ''
    spacer = 1     # can be used to increace space between columns
    for x in range(len(aLens) - 1):   # loop
        if x == 4 :     # your example used one left justified column
            txt += "{0:<{1}}".format(' ',spacer) + a[x][l_num].ljust(aLens[x])
        else:      # right justified
            txt += a[x][l_num].rjust(aLens[x]+spacer)
    return txt + '\r\n'   # add line breaks

notepad.new()     # open a new doc
big_txt = ''

for l in range(len(a[0])):  # loop through the list of lists saved in ssv_to_list
    big_txt += format_line(l)     # create the new formatted text

editor.addText(big_txt)     # add it to editor.

Cheers
Claudia