On 2014-03-27 21:22, Phillip Susi wrote: > On 3/27/2014 2:40 PM, Mantas Mikulėnas wrote: > >> On the other hand, there _is_ a reimplementation of shl for Linux >> and Solaris, as part of heirloom-toolchest >> <http://heirloom.sourceforge.net/tools.html> and >> <http://heirloom.sourceforge.net/man/shl.1.html>. > > How so? It has to be implemented in the kernel tty layer. Not necessarily – remember that `screen` and `tmux` and `dtach` were implemented entirely in user space. Similarly, heirloom's shl appears to be built on top of ptys, probably just intercepting the "switch" key and relaying the rest. Actually it sounds quite similar to the descriptions of how the old shl worked... (see Message-ID: <cjs1ka$e25@xxxxxxxxxxxxxxxxxxxxxxx>) -- Mantas Mikulėnas <grawity@xxxxxxxxx>
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