Hobby-hacking Eric


ssh stuff fixed

Fixed the ssh stuff on Saturday, making patches for sftp -q, sftp -b, and --disable-ssh-cm

Apparently, sftp has changed recently, by actually implementing the behaviour they've been documenting for some time, namely:

-b batchfile
Batch mode reads a series of commands from an input batchfile instead of stdin. Since it lacks user interaction it should be used in conjunction with non-interactive authentication.

That'll be man page I'm quoting there. Anyhow, that's part of the reason why issue273 was so weird. There's still other stuff mixed in there. For instance, I don't know why salty-horse's server randomly dies during or before scp when ControlMaster is enabled, nor do I know why scp doesn't give us something nice and useful, like an exit code for bad things afoot. But at least now things work like they should.

Also, my --disable-ssh-cm uses a little bit of evilness, namely, unsafePerformIO . newIORef to simulate global variables like you get in other languages. Eeewww... but it seems like the alternative would be to have a bunch of parameters everywhere, just to keep passing that DisableSSHControlMaster flag all the way down to the ssh calls. Lesser of two evils? I hope I know what I'm doing. #haskell seemed a bit doubtful at first, but basically told me it was ok, if I shouted NOINLINE at the compiler. And I hope this doesn't start a precedent of coding sloppily just because doing it right would be mildly inconvenient. The "global" variable is write once, read many, I figure. It's practically a constant, so it couldn't really hurt, could it?

no query cat

I tried looking at query cat today, but didn't get very far. I think I ought to see what DiffCommand does when you pass it file(s) as an argument.

guilty darcsing

Also, I've been rather active on #darcs and on the bug tracker lately. No, no, I'm not trying to take over the bug tracker (though I suppose other darcsers would be happy to have somebody take charge of it), nor have I been specially assigned to the job. It's just that things are going kinda badly at work. That is to say, I have to write up my yearly progress report, which is kinda hard (though not as bad as writing a paper), and so I just end procrastinating a lot... So as soon as I get my act together workwise and start disciplining myself again, my darcs activity should reduce to pre-July levels. Anyway, that's the general idea. If you see me talking, like a WHOLE lot on mailing lists, it probably just means I'm trying to avoid something important.

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