[PD] string padding

[Andy Graybeal]

greetings

i'd like to pad a string... say for instance i want to pad the string
"andy" and "ian" to be able to have a total of 10 characters, and the
padding character will be an underscore.  so the end result would add 6
underscores to the string "andy" and seven underscores to the string
"ian":
"andy______"
"ian_______"

i poked around through extended and did a search on the list archives for
"character pad" and "string pad", nothing came up in the archives, and the
only things i found in extended are mrpeach's [str] help examples, and
moocow's [string2any], [any2string] help examples.  it looks like
mrpeach's stuff is the closest to what i want, but i don't think it's what
i want.  after tofofmtl introduced me to pdmtl, i expected there would be
some string handling in to coincide with the list stuff they have too, but
nothing there.

thanks,
andy