Add method of showing installed & available versions of outdated ports at once

[macports@…]

# port echo outdated
# port installed outdated
# port list outdated

the first two show me the current installed versions of my outdated ports, the third shows me the available version that i could install

if the set of outdated ports is short, it's easy to run both commands and compare, but its very hard to see what changes will actually happen with a long list

i suspect there may be issues changing the default output format of either command (?) but would it be possible to add a way of optionally seeing both installed + available versions listed side by side?

e.g. by having the installed or available ports shown in verbose mode for one/more of these commands (e.g. port -v list outdated), or by adding an option to one of the commands to show both installed + available versions (e.g. port list -v outdated)

i've looked for other ways of 'joining' this information, and the closest i can find is port -y upgrade outdated, which is about 3x the output and much harder for human-parsing...

this may also (slightly) overlap with #26028, at least in terms of user-interest if not functionality

[ryandesign (Ryan Carsten Schmidt)]

The command you are looking for is:

port outdated