On Sun, Nov 2, 2008 at 7:20 PM, Gwern Branwen
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On Sun, Nov 2, 2008 at 10:05 PM, Matt Brown wrote:
Hello all,
attached is a new module, XMonad.Prompt.SshShell, which allows you to launch X apps directly from xmonad (via passwordless ssh). There are two prompts defined in this module:
sshShellPrompt -- given a login (user@host), prompts for a program and arguments to run remotely sshSelectLoginPrompt -- prompts for a login, then creates an sshShellPrompt for that login
This is adapted from XMonad.Prompt.Shell (as you might have guessed), by simply tweaking each function to use ssh where necessary. Completion works (both command and filename), with one caveat: for each completion (i.e., each keypress), a new ssh session is spawned. So it's pretty laggy (not too bad over lan, haven't tried yet for long latency connections). Should be able to improve upon that by using spawnPipe, which I'll be working towards.
I'm not a ssh expert, but isn't there an OpenSSH feature called 'controlmaster' which is supposed to let you do the simple thing of just opening up new ssh sessions while under the hood concatenating them all into a single fast session? Maybe it'd be better to have the user do that instead - it would let the code remain as simple as it is now, and presumably it would benefit the user in all non-XMonad-related activities.
following the simple instructions from http://www.linux.com/articles/54498, I saw a big improvement. thanks for the tip! will document that in the source.
Another note: I've copied two functions from XMonad.Prompt.Shell verbatim: escape, and isSpecialChar. They aren't exported, and I didn't want to mess with Shell prompt in this patch. I'll clean that up too later, if this patch is accepted.
-matt
Yes, I think it would be a good idea to have those sorts of functions in a common area - especially given the hard-wired information inside 'isSpecialChar'. But maybe not in XMonad.Util.*. How about XMonad.Prompt? That is already something of a grabbag, and these functions are being used in multiple prompt-related modules. :)
sounds good to me. I'll send a patch for that soon.
- -- gwern
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-matt