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scheme / scsh

A Unix shell embedded in scheme
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##? #13

Closed michael-heerdegen closed 10 years ago

michael-heerdegen commented 10 years ago

Sorry to harrow you with another question, but this one is also important for me. I browsed some of the sources, but didn't find an answer.

I plan to use scsh as an interactive shell. scheme48 has a reader macro `##' standing for the "focus value", the last returned value. scsh doesn't have it -- is there a replacement?

Or is there another quick way to send a signal to a process I recently started but didn't asign to any variable? Thanks!

roderyc commented 10 years ago

scsh doesn't support ## or any other mechanism like what you're describing at the moment, and I don't think I'll have time to add it any time soon.

That being said, the reader is in scsh-read.scm. If this is really important to you and you're able to, I'd encourage looking around in there, checking out how scheme48 implements ## and seeing how the same could be done for scsh. I'd welcome a pull request related to that.

As a side note, scsh really isn't optimized as a language / environment for interactive commands like shells are. It's great for programming and complex scripting in unix environments. It would make a great base for a language that is optimized for what you want, but I wouldn't recommend scsh as it is for an interactive shell.