i've implemented what i think is the right behavior for -part and -type.
the only real change (i think) from past behavior (besides the bug
fix that i set out to take care of) is that if you specify a part
with -part, it will definitely selected to appear in the output.
as in the current codebase, -type switches apply to parts already
selected with -part (or all parts, in the absence of -part) -- i.e.,
they act as a further filter. specifying a multipart/alternative
part with -part will result in the RFC behavior: only one subpart
wins. adding a -type switch can change which part wins.
the behavior that robert elz supported, where multiple -type switches
can get you multiple subparts of a multipart, isn't currently supported.
it would be trivia to do so, but i haven't yet. (mulipart/related or
multipart/mixed parts behave that way now, so it's just a matter of
pretending the multipart alternative is something else.)
here's a cut at a manpage-like description of the behavior as i've
implemented it:
The `-part' switch can be used (one or more times) to restrict the
set of subparts that will be displayed. (Obviously with no
`-part' switches, all parts will be considered.) If a `-part'
switch specifies a specific subpart (i.e., a "leaf" in the tree of
MIME parts), then that part will always be displayed. If a
`-part' switch references a multipart/alternative part, then (in
the absence of a `-type' switch) only the default subpart of that
multipart will be displayed. If a `-part' switch references a
part of type multipart (or if there are no `-part switches at
all), then the `-type' switch can be used to further restrict
parts according to content type. To specify content regardless of
its subtype, use just the name of the content, e.g., “-type text”.
To specify a specific subtype, separate the two with a slash,
e.g., “-type text/plain”. Multiple `-type' switches applied to a
multipart/alternative part will only select the first matching
subpart.
comments?
paul
=----------------------
paul fox, pgf(_at_)foxharp(_dot_)boston(_dot_)ma(_dot_)us (arlington, ma,
where it's 18.9 degrees)
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