Armin> I recently discovered that os.path.commonprefix(list-of-strings)
Armin> returns the longest substring that is an initial segment of all
Armin> the given strings, and that this has nothing to do with the fact
Armin> that the strings might be paths.
:-) I discovered the same thing over a year ago, fixed the problem in CVS,
then got roundly booed because I'd changed the semantics. I think it broke
some bit of code of Mark Hammond's. I recently used this function to find
the common prefix in a bunch of email addresses and prefaced it with this
comment:
# don't be fooled by "os.path." - commonprefix operates char-by-char!
pfx = os.path.commonprefix(all_addrs)
The Tools/scripts/trace.py file has a component-wise implementation of
commonprefix().
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