It's possibly just a configuration problem. I took a quick look at the shellinabox file `vt100.jspp`; the code at lines 2489-2452 should generate the ESC prefix when the alt/meta key is active, but alt must be enabled. Presumably there's a config file or dialog for this.
As an aside, it looks like the alt key configuration has a secondary dependency based upon whether the code is running on a Mac or not. I don't have the line reference handy, but it's earlier in the same file. On Sat, May 07, 2016 at 01:11:27AM -0500, Blake McBride wrote: > GNU APL works in a browser over the net via: > [1]https://github.com/shellinabox > /shellinabox.git > > The only problem I had was when I used it with akt, the alt-keys didn't work > correctly. My guess is that there is a mapping problem in shellinabox. So, > APL programs work great in it, but you can't program in it. > > Blake > > > References: > > [1] https://github.com/shellinabox/shellinabox.git
