Tim Chase wrote:
[...]
I broke it out into multiple lines to hopefully make more sense of it.
The first two substitute() lines add a zero on the left of whatever they
found, and then take whatever the rightmost two characters of the result
are...effectively padding them with zeros on the left if needed.
Ideally, Vim would provide a right() function where you could just do
something like
right('0'.submatch(1), 2)
to zero-pad to 2 places. Alas, the substitute() trick is the easiest
way I've found to simulate this.
[...]
("0" . submatch(1))[-2:]
i.e. the last two characters of the string obtained by prepending a zero
to submatch(1)
see ":help expr-[:]"
Best regards,
Tony.
